diff options
Diffstat (limited to 'support')
37 files changed, 3887 insertions, 84 deletions
diff --git a/support/Makefile b/support/Makefile index aa57207bdc..84e2419775 100644 --- a/support/Makefile +++ b/support/Makefile @@ -42,15 +42,15 @@ libsupport-routines = \ resolv_test \ set_fortify_handler \ support-open-dev-null-range \ - support-xfstat \ - support-xfstat-time64 \ - support-xstat \ - support-xstat-time64 \ support_become_root \ support_can_chroot \ support_capture_subprocess \ support_capture_subprocess_check \ + support_check_stat_fd \ + support_check_stat_path \ support_chroot \ + support_compare_file_bytes \ + support_compare_file_string \ support_copy_file \ support_copy_file_range \ support_create_timer \ @@ -64,9 +64,12 @@ libsupport-routines = \ support_format_herrno \ support_format_hostent \ support_format_netent \ + support_fuse \ support_isolate_in_subprocess \ support_mutex_pi_monotonic \ support_need_proc \ + support_open_and_compare_file_bytes \ + support_open_and_compare_file_string \ support_openpty \ support_path_support_time64 \ support_paths \ @@ -75,6 +78,9 @@ libsupport-routines = \ support_quote_blob \ support_quote_blob_wide \ support_quote_string \ + support_readdir \ + support_readdir_check \ + support_readdir_r_check \ support_record_failure \ support_run_diff \ support_select_modifies_timeout \ @@ -117,6 +123,7 @@ libsupport-routines = \ xclock_settime_time64 \ xclone \ xclose \ + xclosedir \ xconnect \ xcopy_file_range \ xdlfcn \ @@ -124,6 +131,7 @@ libsupport-routines = \ xdup2 \ xfchmod \ xfclose \ + xfdopendir \ xfgets \ xfopen \ xfork \ @@ -135,8 +143,6 @@ libsupport-routines = \ xgetsockname \ xlisten \ xlseek \ - xlstat \ - xlstat-time64 \ xmalloc \ xmemstream \ xmkdir \ @@ -147,6 +153,7 @@ libsupport-routines = \ xmunmap \ xnewlocale \ xopen \ + xopendir \ xpipe \ xpoll \ xposix_memalign \ @@ -210,6 +217,7 @@ libsupport-routines = \ xsignal \ xsigstack \ xsocket \ + xstatx \ xstrdup \ xstrndup \ xsymlink \ @@ -321,15 +329,18 @@ tests = \ tst-support_capture_subprocess \ tst-support_descriptors \ tst-support_format_dns_packet \ + tst-support_fuse \ tst-support_quote_blob \ tst-support_quote_blob_wide \ tst-support_quote_string \ + tst-support_readdir \ tst-support_record_failure \ tst-test_compare \ tst-test_compare_blob \ tst-test_compare_string \ tst-test_compare_string_wide \ tst-timespec \ + tst-xdirent \ tst-xreadlink \ tst-xsigstack \ # tests diff --git a/support/bundled/README b/support/bundled/README new file mode 100644 index 0000000000..e861b3d40a --- /dev/null +++ b/support/bundled/README @@ -0,0 +1,5 @@ +This subtree contains bundled files included verbatim from other +sources. They are used for building the support/ infrastructure. + +linux/ + Select files from the Linux 6.10 source tree. diff --git a/support/bundled/linux/COPYING b/support/bundled/linux/COPYING new file mode 100644 index 0000000000..a635a38ef9 --- /dev/null +++ b/support/bundled/linux/COPYING @@ -0,0 +1,20 @@ +The Linux Kernel is provided under: + + SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note + +Being under the terms of the GNU General Public License version 2 only, +according with: + + LICENSES/preferred/GPL-2.0 + +With an explicit syscall exception, as stated at: + + LICENSES/exceptions/Linux-syscall-note + +In addition, other licenses may also apply. Please see: + + Documentation/process/license-rules.rst + +for more details. + +All contributions to the Linux Kernel are subject to this COPYING file. diff --git a/support/bundled/linux/LICENSES/exceptions/Linux-syscall-note b/support/bundled/linux/LICENSES/exceptions/Linux-syscall-note new file mode 100644 index 0000000000..adbe756a05 --- /dev/null +++ b/support/bundled/linux/LICENSES/exceptions/Linux-syscall-note @@ -0,0 +1,24 @@ +SPDX-Exception-Identifier: Linux-syscall-note +SPDX-URL: https://spdx.org/licenses/Linux-syscall-note.html +SPDX-Licenses: GPL-2.0, GPL-2.0+, GPL-1.0+, LGPL-2.0, LGPL-2.0+, LGPL-2.1, LGPL-2.1+, GPL-2.0-only, GPL-2.0-or-later +Usage-Guide: + This exception is used together with one of the above SPDX-Licenses + to mark user space API (uapi) header files so they can be included + into non GPL compliant user space application code. + To use this exception add it with the keyword WITH to one of the + identifiers in the SPDX-Licenses tag: + SPDX-License-Identifier: <SPDX-License> WITH Linux-syscall-note +License-Text: + + NOTE! This copyright does *not* cover user programs that use kernel + services by normal system calls - this is merely considered normal use + of the kernel, and does *not* fall under the heading of "derived work". + Also note that the GPL below is copyrighted by the Free Software + Foundation, but the instance of code that it refers to (the Linux + kernel) is copyrighted by me and others who actually wrote it. + + Also note that the only valid version of the GPL as far as the kernel + is concerned is _this_ particular version of the license (ie v2, not + v2.2 or v3.x or whatever), unless explicitly otherwise stated. + + Linus Torvalds diff --git a/support/bundled/linux/LICENSES/preferred/GPL-2.0 b/support/bundled/linux/LICENSES/preferred/GPL-2.0 new file mode 100644 index 0000000000..ff0812fd89 --- /dev/null +++ b/support/bundled/linux/LICENSES/preferred/GPL-2.0 @@ -0,0 +1,359 @@ +Valid-License-Identifier: GPL-2.0 +Valid-License-Identifier: GPL-2.0-only +Valid-License-Identifier: GPL-2.0+ +Valid-License-Identifier: GPL-2.0-or-later +SPDX-URL: https://spdx.org/licenses/GPL-2.0.html +Usage-Guide: + To use this license in source code, put one of the following SPDX + tag/value pairs into a comment according to the placement + guidelines in the licensing rules documentation. + For 'GNU General Public License (GPL) version 2 only' use: + SPDX-License-Identifier: GPL-2.0 + or + SPDX-License-Identifier: GPL-2.0-only + For 'GNU General Public License (GPL) version 2 or any later version' use: + SPDX-License-Identifier: GPL-2.0+ + or + SPDX-License-Identifier: GPL-2.0-or-later +License-Text: + + GNU GENERAL PUBLIC LICENSE + Version 2, June 1991 + + Copyright (C) 1989, 1991 Free Software Foundation, Inc. + 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + Preamble + + The licenses for most software are designed to take away your +freedom to share and change it. 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Of course, the commands you use may +be called something other than `show w' and `show c'; they could even be +mouse-clicks or menu items--whatever suits your program. + +You should also get your employer (if you work as a programmer) or your +school, if any, to sign a "copyright disclaimer" for the program, if +necessary. Here is a sample; alter the names: + + Yoyodyne, Inc., hereby disclaims all copyright interest in the program + `Gnomovision' (which makes passes at compilers) written by James Hacker. + + <signature of Ty Coon>, 1 April 1989 + Ty Coon, President of Vice + +This General Public License does not permit incorporating your program into +proprietary programs. If your program is a subroutine library, you may +consider it more useful to permit linking proprietary applications with the +library. If this is what you want to do, use the GNU Library General +Public License instead of this License. diff --git a/support/bundled/linux/include/uapi/linux/fuse.h b/support/bundled/linux/include/uapi/linux/fuse.h new file mode 100644 index 0000000000..d08b99d60f --- /dev/null +++ b/support/bundled/linux/include/uapi/linux/fuse.h @@ -0,0 +1,1189 @@ +/* SPDX-License-Identifier: ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause) */ +/* + This file defines the kernel interface of FUSE + Copyright (C) 2001-2008 Miklos Szeredi <miklos@szeredi.hu> + + This program can be distributed under the terms of the GNU GPL. + See the file COPYING. + + This -- and only this -- header file may also be distributed under + the terms of the BSD Licence as follows: + + Copyright (C) 2001-2007 Miklos Szeredi. All rights reserved. + + Redistribution and use in source and binary forms, with or without + modification, are permitted provided that the following conditions + are met: + 1. Redistributions of source code must retain the above copyright + notice, this list of conditions and the following disclaimer. + 2. Redistributions in binary form must reproduce the above copyright + notice, this list of conditions and the following disclaimer in the + documentation and/or other materials provided with the distribution. + + THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND + ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE + FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + SUCH DAMAGE. +*/ + +/* + * This file defines the kernel interface of FUSE + * + * Protocol changelog: + * + * 7.1: + * - add the following messages: + * FUSE_SETATTR, FUSE_SYMLINK, FUSE_MKNOD, FUSE_MKDIR, FUSE_UNLINK, + * FUSE_RMDIR, FUSE_RENAME, FUSE_LINK, FUSE_OPEN, FUSE_READ, FUSE_WRITE, + * FUSE_RELEASE, FUSE_FSYNC, FUSE_FLUSH, FUSE_SETXATTR, FUSE_GETXATTR, + * FUSE_LISTXATTR, FUSE_REMOVEXATTR, FUSE_OPENDIR, FUSE_READDIR, + * FUSE_RELEASEDIR + * - add padding to messages to accommodate 32-bit servers on 64-bit kernels + * + * 7.2: + * - add FOPEN_DIRECT_IO and FOPEN_KEEP_CACHE flags + * - add FUSE_FSYNCDIR message + * + * 7.3: + * - add FUSE_ACCESS message + * - add FUSE_CREATE message + * - add filehandle to fuse_setattr_in + * + * 7.4: + * - add frsize to fuse_kstatfs + * - clean up request size limit checking + * + * 7.5: + * - add flags and max_write to fuse_init_out + * + * 7.6: + * - add max_readahead to fuse_init_in and fuse_init_out + * + * 7.7: + * - add FUSE_INTERRUPT message + * - add POSIX file lock support + * + * 7.8: + * - add lock_owner and flags fields to fuse_release_in + * - add FUSE_BMAP message + * - add FUSE_DESTROY message + * + * 7.9: + * - new fuse_getattr_in input argument of GETATTR + * - add lk_flags in fuse_lk_in + * - add lock_owner field to fuse_setattr_in, fuse_read_in and fuse_write_in + * - add blksize field to fuse_attr + * - add file flags field to fuse_read_in and fuse_write_in + * - Add ATIME_NOW and MTIME_NOW flags to fuse_setattr_in + * + * 7.10 + * - add nonseekable open flag + * + * 7.11 + * - add IOCTL message + * - add unsolicited notification support + * - add POLL message and NOTIFY_POLL notification + * + * 7.12 + * - add umask flag to input argument of create, mknod and mkdir + * - add notification messages for invalidation of inodes and + * directory entries + * + * 7.13 + * - make max number of background requests and congestion threshold + * tunables + * + * 7.14 + * - add splice support to fuse device + * + * 7.15 + * - add store notify + * - add retrieve notify + * + * 7.16 + * - add BATCH_FORGET request + * - FUSE_IOCTL_UNRESTRICTED shall now return with array of 'struct + * fuse_ioctl_iovec' instead of ambiguous 'struct iovec' + * - add FUSE_IOCTL_32BIT flag + * + * 7.17 + * - add FUSE_FLOCK_LOCKS and FUSE_RELEASE_FLOCK_UNLOCK + * + * 7.18 + * - add FUSE_IOCTL_DIR flag + * - add FUSE_NOTIFY_DELETE + * + * 7.19 + * - add FUSE_FALLOCATE + * + * 7.20 + * - add FUSE_AUTO_INVAL_DATA + * + * 7.21 + * - add FUSE_READDIRPLUS + * - send the requested events in POLL request + * + * 7.22 + * - add FUSE_ASYNC_DIO + * + * 7.23 + * - add FUSE_WRITEBACK_CACHE + * - add time_gran to fuse_init_out + * - add reserved space to fuse_init_out + * - add FATTR_CTIME + * - add ctime and ctimensec to fuse_setattr_in + * - add FUSE_RENAME2 request + * - add FUSE_NO_OPEN_SUPPORT flag + * + * 7.24 + * - add FUSE_LSEEK for SEEK_HOLE and SEEK_DATA support + * + * 7.25 + * - add FUSE_PARALLEL_DIROPS + * + * 7.26 + * - add FUSE_HANDLE_KILLPRIV + * - add FUSE_POSIX_ACL + * + * 7.27 + * - add FUSE_ABORT_ERROR + * + * 7.28 + * - add FUSE_COPY_FILE_RANGE + * - add FOPEN_CACHE_DIR + * - add FUSE_MAX_PAGES, add max_pages to init_out + * - add FUSE_CACHE_SYMLINKS + * + * 7.29 + * - add FUSE_NO_OPENDIR_SUPPORT flag + * + * 7.30 + * - add FUSE_EXPLICIT_INVAL_DATA + * - add FUSE_IOCTL_COMPAT_X32 + * + * 7.31 + * - add FUSE_WRITE_KILL_PRIV flag + * - add FUSE_SETUPMAPPING and FUSE_REMOVEMAPPING + * - add map_alignment to fuse_init_out, add FUSE_MAP_ALIGNMENT flag + * + * 7.32 + * - add flags to fuse_attr, add FUSE_ATTR_SUBMOUNT, add FUSE_SUBMOUNTS + * + * 7.33 + * - add FUSE_HANDLE_KILLPRIV_V2, FUSE_WRITE_KILL_SUIDGID, FATTR_KILL_SUIDGID + * - add FUSE_OPEN_KILL_SUIDGID + * - extend fuse_setxattr_in, add FUSE_SETXATTR_EXT + * - add FUSE_SETXATTR_ACL_KILL_SGID + * + * 7.34 + * - add FUSE_SYNCFS + * + * 7.35 + * - add FOPEN_NOFLUSH + * + * 7.36 + * - extend fuse_init_in with reserved fields, add FUSE_INIT_EXT init flag + * - add flags2 to fuse_init_in and fuse_init_out + * - add FUSE_SECURITY_CTX init flag + * - add security context to create, mkdir, symlink, and mknod requests + * - add FUSE_HAS_INODE_DAX, FUSE_ATTR_DAX + * + * 7.37 + * - add FUSE_TMPFILE + * + * 7.38 + * - add FUSE_EXPIRE_ONLY flag to fuse_notify_inval_entry + * - add FOPEN_PARALLEL_DIRECT_WRITES + * - add total_extlen to fuse_in_header + * - add FUSE_MAX_NR_SECCTX + * - add extension header + * - add FUSE_EXT_GROUPS + * - add FUSE_CREATE_SUPP_GROUP + * - add FUSE_HAS_EXPIRE_ONLY + * + * 7.39 + * - add FUSE_DIRECT_IO_ALLOW_MMAP + * - add FUSE_STATX and related structures + * + * 7.40 + * - add max_stack_depth to fuse_init_out, add FUSE_PASSTHROUGH init flag + * - add backing_id to fuse_open_out, add FOPEN_PASSTHROUGH open flag + * - add FUSE_NO_EXPORT_SUPPORT init flag + * - add FUSE_NOTIFY_RESEND, add FUSE_HAS_RESEND init flag + */ + +#ifndef _LINUX_FUSE_H +#define _LINUX_FUSE_H + +#ifdef __KERNEL__ +#include <linux/types.h> +#else +#include <stdint.h> +#endif + +/* + * Version negotiation: + * + * Both the kernel and userspace send the version they support in the + * INIT request and reply respectively. + * + * If the major versions match then both shall use the smallest + * of the two minor versions for communication. + * + * If the kernel supports a larger major version, then userspace shall + * reply with the major version it supports, ignore the rest of the + * INIT message and expect a new INIT message from the kernel with a + * matching major version. + * + * If the library supports a larger major version, then it shall fall + * back to the major protocol version sent by the kernel for + * communication and reply with that major version (and an arbitrary + * supported minor version). + */ + +/** Version number of this interface */ +#define FUSE_KERNEL_VERSION 7 + +/** Minor version number of this interface */ +#define FUSE_KERNEL_MINOR_VERSION 40 + +/** The node ID of the root inode */ +#define FUSE_ROOT_ID 1 + +/* Make sure all structures are padded to 64bit boundary, so 32bit + userspace works under 64bit kernels */ + +struct fuse_attr { + uint64_t ino; + uint64_t size; + uint64_t blocks; + uint64_t atime; + uint64_t mtime; + uint64_t ctime; + uint32_t atimensec; + uint32_t mtimensec; + uint32_t ctimensec; + uint32_t mode; + uint32_t nlink; + uint32_t uid; + uint32_t gid; + uint32_t rdev; + uint32_t blksize; + uint32_t flags; +}; + +/* + * The following structures are bit-for-bit compatible with the statx(2) ABI in + * Linux. + */ +struct fuse_sx_time { + int64_t tv_sec; + uint32_t tv_nsec; + int32_t __reserved; +}; + +struct fuse_statx { + uint32_t mask; + uint32_t blksize; + uint64_t attributes; + uint32_t nlink; + uint32_t uid; + uint32_t gid; + uint16_t mode; + uint16_t __spare0[1]; + uint64_t ino; + uint64_t size; + uint64_t blocks; + uint64_t attributes_mask; + struct fuse_sx_time atime; + struct fuse_sx_time btime; + struct fuse_sx_time ctime; + struct fuse_sx_time mtime; + uint32_t rdev_major; + uint32_t rdev_minor; + uint32_t dev_major; + uint32_t dev_minor; + uint64_t __spare2[14]; +}; + +struct fuse_kstatfs { + uint64_t blocks; + uint64_t bfree; + uint64_t bavail; + uint64_t files; + uint64_t ffree; + uint32_t bsize; + uint32_t namelen; + uint32_t frsize; + uint32_t padding; + uint32_t spare[6]; +}; + +struct fuse_file_lock { + uint64_t start; + uint64_t end; + uint32_t type; + uint32_t pid; /* tgid */ +}; + +/** + * Bitmasks for fuse_setattr_in.valid + */ +#define FATTR_MODE (1 << 0) +#define FATTR_UID (1 << 1) +#define FATTR_GID (1 << 2) +#define FATTR_SIZE (1 << 3) +#define FATTR_ATIME (1 << 4) +#define FATTR_MTIME (1 << 5) +#define FATTR_FH (1 << 6) +#define FATTR_ATIME_NOW (1 << 7) +#define FATTR_MTIME_NOW (1 << 8) +#define FATTR_LOCKOWNER (1 << 9) +#define FATTR_CTIME (1 << 10) +#define FATTR_KILL_SUIDGID (1 << 11) + +/** + * Flags returned by the OPEN request + * + * FOPEN_DIRECT_IO: bypass page cache for this open file + * FOPEN_KEEP_CACHE: don't invalidate the data cache on open + * FOPEN_NONSEEKABLE: the file is not seekable + * FOPEN_CACHE_DIR: allow caching this directory + * FOPEN_STREAM: the file is stream-like (no file position at all) + * FOPEN_NOFLUSH: don't flush data cache on close (unless FUSE_WRITEBACK_CACHE) + * FOPEN_PARALLEL_DIRECT_WRITES: Allow concurrent direct writes on the same inode + * FOPEN_PASSTHROUGH: passthrough read/write io for this open file + */ +#define FOPEN_DIRECT_IO (1 << 0) +#define FOPEN_KEEP_CACHE (1 << 1) +#define FOPEN_NONSEEKABLE (1 << 2) +#define FOPEN_CACHE_DIR (1 << 3) +#define FOPEN_STREAM (1 << 4) +#define FOPEN_NOFLUSH (1 << 5) +#define FOPEN_PARALLEL_DIRECT_WRITES (1 << 6) +#define FOPEN_PASSTHROUGH (1 << 7) + +/** + * INIT request/reply flags + * + * FUSE_ASYNC_READ: asynchronous read requests + * FUSE_POSIX_LOCKS: remote locking for POSIX file locks + * FUSE_FILE_OPS: kernel sends file handle for fstat, etc... (not yet supported) + * FUSE_ATOMIC_O_TRUNC: handles the O_TRUNC open flag in the filesystem + * FUSE_EXPORT_SUPPORT: filesystem handles lookups of "." and ".." + * FUSE_BIG_WRITES: filesystem can handle write size larger than 4kB + * FUSE_DONT_MASK: don't apply umask to file mode on create operations + * FUSE_SPLICE_WRITE: kernel supports splice write on the device + * FUSE_SPLICE_MOVE: kernel supports splice move on the device + * FUSE_SPLICE_READ: kernel supports splice read on the device + * FUSE_FLOCK_LOCKS: remote locking for BSD style file locks + * FUSE_HAS_IOCTL_DIR: kernel supports ioctl on directories + * FUSE_AUTO_INVAL_DATA: automatically invalidate cached pages + * FUSE_DO_READDIRPLUS: do READDIRPLUS (READDIR+LOOKUP in one) + * FUSE_READDIRPLUS_AUTO: adaptive readdirplus + * FUSE_ASYNC_DIO: asynchronous direct I/O submission + * FUSE_WRITEBACK_CACHE: use writeback cache for buffered writes + * FUSE_NO_OPEN_SUPPORT: kernel supports zero-message opens + * FUSE_PARALLEL_DIROPS: allow parallel lookups and readdir + * FUSE_HANDLE_KILLPRIV: fs handles killing suid/sgid/cap on write/chown/trunc + * FUSE_POSIX_ACL: filesystem supports posix acls + * FUSE_ABORT_ERROR: reading the device after abort returns ECONNABORTED + * FUSE_MAX_PAGES: init_out.max_pages contains the max number of req pages + * FUSE_CACHE_SYMLINKS: cache READLINK responses + * FUSE_NO_OPENDIR_SUPPORT: kernel supports zero-message opendir + * FUSE_EXPLICIT_INVAL_DATA: only invalidate cached pages on explicit request + * FUSE_MAP_ALIGNMENT: init_out.map_alignment contains log2(byte alignment) for + * foffset and moffset fields in struct + * fuse_setupmapping_out and fuse_removemapping_one. + * FUSE_SUBMOUNTS: kernel supports auto-mounting directory submounts + * FUSE_HANDLE_KILLPRIV_V2: fs kills suid/sgid/cap on write/chown/trunc. + * Upon write/truncate suid/sgid is only killed if caller + * does not have CAP_FSETID. Additionally upon + * write/truncate sgid is killed only if file has group + * execute permission. (Same as Linux VFS behavior). + * FUSE_SETXATTR_EXT: Server supports extended struct fuse_setxattr_in + * FUSE_INIT_EXT: extended fuse_init_in request + * FUSE_INIT_RESERVED: reserved, do not use + * FUSE_SECURITY_CTX: add security context to create, mkdir, symlink, and + * mknod + * FUSE_HAS_INODE_DAX: use per inode DAX + * FUSE_CREATE_SUPP_GROUP: add supplementary group info to create, mkdir, + * symlink and mknod (single group that matches parent) + * FUSE_HAS_EXPIRE_ONLY: kernel supports expiry-only entry invalidation + * FUSE_DIRECT_IO_ALLOW_MMAP: allow shared mmap in FOPEN_DIRECT_IO mode. + * FUSE_NO_EXPORT_SUPPORT: explicitly disable export support + * FUSE_HAS_RESEND: kernel supports resending pending requests, and the high bit + * of the request ID indicates resend requests + */ +#define FUSE_ASYNC_READ (1 << 0) +#define FUSE_POSIX_LOCKS (1 << 1) +#define FUSE_FILE_OPS (1 << 2) +#define FUSE_ATOMIC_O_TRUNC (1 << 3) +#define FUSE_EXPORT_SUPPORT (1 << 4) +#define FUSE_BIG_WRITES (1 << 5) +#define FUSE_DONT_MASK (1 << 6) +#define FUSE_SPLICE_WRITE (1 << 7) +#define FUSE_SPLICE_MOVE (1 << 8) +#define FUSE_SPLICE_READ (1 << 9) +#define FUSE_FLOCK_LOCKS (1 << 10) +#define FUSE_HAS_IOCTL_DIR (1 << 11) +#define FUSE_AUTO_INVAL_DATA (1 << 12) +#define FUSE_DO_READDIRPLUS (1 << 13) +#define FUSE_READDIRPLUS_AUTO (1 << 14) +#define FUSE_ASYNC_DIO (1 << 15) +#define FUSE_WRITEBACK_CACHE (1 << 16) +#define FUSE_NO_OPEN_SUPPORT (1 << 17) +#define FUSE_PARALLEL_DIROPS (1 << 18) +#define FUSE_HANDLE_KILLPRIV (1 << 19) +#define FUSE_POSIX_ACL (1 << 20) +#define FUSE_ABORT_ERROR (1 << 21) +#define FUSE_MAX_PAGES (1 << 22) +#define FUSE_CACHE_SYMLINKS (1 << 23) +#define FUSE_NO_OPENDIR_SUPPORT (1 << 24) +#define FUSE_EXPLICIT_INVAL_DATA (1 << 25) +#define FUSE_MAP_ALIGNMENT (1 << 26) +#define FUSE_SUBMOUNTS (1 << 27) +#define FUSE_HANDLE_KILLPRIV_V2 (1 << 28) +#define FUSE_SETXATTR_EXT (1 << 29) +#define FUSE_INIT_EXT (1 << 30) +#define FUSE_INIT_RESERVED (1 << 31) +/* bits 32..63 get shifted down 32 bits into the flags2 field */ +#define FUSE_SECURITY_CTX (1ULL << 32) +#define FUSE_HAS_INODE_DAX (1ULL << 33) +#define FUSE_CREATE_SUPP_GROUP (1ULL << 34) +#define FUSE_HAS_EXPIRE_ONLY (1ULL << 35) +#define FUSE_DIRECT_IO_ALLOW_MMAP (1ULL << 36) +#define FUSE_PASSTHROUGH (1ULL << 37) +#define FUSE_NO_EXPORT_SUPPORT (1ULL << 38) +#define FUSE_HAS_RESEND (1ULL << 39) + +/* Obsolete alias for FUSE_DIRECT_IO_ALLOW_MMAP */ +#define FUSE_DIRECT_IO_RELAX FUSE_DIRECT_IO_ALLOW_MMAP + +/** + * CUSE INIT request/reply flags + * + * CUSE_UNRESTRICTED_IOCTL: use unrestricted ioctl + */ +#define CUSE_UNRESTRICTED_IOCTL (1 << 0) + +/** + * Release flags + */ +#define FUSE_RELEASE_FLUSH (1 << 0) +#define FUSE_RELEASE_FLOCK_UNLOCK (1 << 1) + +/** + * Getattr flags + */ +#define FUSE_GETATTR_FH (1 << 0) + +/** + * Lock flags + */ +#define FUSE_LK_FLOCK (1 << 0) + +/** + * WRITE flags + * + * FUSE_WRITE_CACHE: delayed write from page cache, file handle is guessed + * FUSE_WRITE_LOCKOWNER: lock_owner field is valid + * FUSE_WRITE_KILL_SUIDGID: kill suid and sgid bits + */ +#define FUSE_WRITE_CACHE (1 << 0) +#define FUSE_WRITE_LOCKOWNER (1 << 1) +#define FUSE_WRITE_KILL_SUIDGID (1 << 2) + +/* Obsolete alias; this flag implies killing suid/sgid only. */ +#define FUSE_WRITE_KILL_PRIV FUSE_WRITE_KILL_SUIDGID + +/** + * Read flags + */ +#define FUSE_READ_LOCKOWNER (1 << 1) + +/** + * Ioctl flags + * + * FUSE_IOCTL_COMPAT: 32bit compat ioctl on 64bit machine + * FUSE_IOCTL_UNRESTRICTED: not restricted to well-formed ioctls, retry allowed + * FUSE_IOCTL_RETRY: retry with new iovecs + * FUSE_IOCTL_32BIT: 32bit ioctl + * FUSE_IOCTL_DIR: is a directory + * FUSE_IOCTL_COMPAT_X32: x32 compat ioctl on 64bit machine (64bit time_t) + * + * FUSE_IOCTL_MAX_IOV: maximum of in_iovecs + out_iovecs + */ +#define FUSE_IOCTL_COMPAT (1 << 0) +#define FUSE_IOCTL_UNRESTRICTED (1 << 1) +#define FUSE_IOCTL_RETRY (1 << 2) +#define FUSE_IOCTL_32BIT (1 << 3) +#define FUSE_IOCTL_DIR (1 << 4) +#define FUSE_IOCTL_COMPAT_X32 (1 << 5) + +#define FUSE_IOCTL_MAX_IOV 256 + +/** + * Poll flags + * + * FUSE_POLL_SCHEDULE_NOTIFY: request poll notify + */ +#define FUSE_POLL_SCHEDULE_NOTIFY (1 << 0) + +/** + * Fsync flags + * + * FUSE_FSYNC_FDATASYNC: Sync data only, not metadata + */ +#define FUSE_FSYNC_FDATASYNC (1 << 0) + +/** + * fuse_attr flags + * + * FUSE_ATTR_SUBMOUNT: Object is a submount root + * FUSE_ATTR_DAX: Enable DAX for this file in per inode DAX mode + */ +#define FUSE_ATTR_SUBMOUNT (1 << 0) +#define FUSE_ATTR_DAX (1 << 1) + +/** + * Open flags + * FUSE_OPEN_KILL_SUIDGID: Kill suid and sgid if executable + */ +#define FUSE_OPEN_KILL_SUIDGID (1 << 0) + +/** + * setxattr flags + * FUSE_SETXATTR_ACL_KILL_SGID: Clear SGID when system.posix_acl_access is set + */ +#define FUSE_SETXATTR_ACL_KILL_SGID (1 << 0) + +/** + * notify_inval_entry flags + * FUSE_EXPIRE_ONLY + */ +#define FUSE_EXPIRE_ONLY (1 << 0) + +/** + * extension type + * FUSE_MAX_NR_SECCTX: maximum value of &fuse_secctx_header.nr_secctx + * FUSE_EXT_GROUPS: &fuse_supp_groups extension + */ +enum fuse_ext_type { + /* Types 0..31 are reserved for fuse_secctx_header */ + FUSE_MAX_NR_SECCTX = 31, + FUSE_EXT_GROUPS = 32, +}; + +enum fuse_opcode { + FUSE_LOOKUP = 1, + FUSE_FORGET = 2, /* no reply */ + FUSE_GETATTR = 3, + FUSE_SETATTR = 4, + FUSE_READLINK = 5, + FUSE_SYMLINK = 6, + FUSE_MKNOD = 8, + FUSE_MKDIR = 9, + FUSE_UNLINK = 10, + FUSE_RMDIR = 11, + FUSE_RENAME = 12, + FUSE_LINK = 13, + FUSE_OPEN = 14, + FUSE_READ = 15, + FUSE_WRITE = 16, + FUSE_STATFS = 17, + FUSE_RELEASE = 18, + FUSE_FSYNC = 20, + FUSE_SETXATTR = 21, + FUSE_GETXATTR = 22, + FUSE_LISTXATTR = 23, + FUSE_REMOVEXATTR = 24, + FUSE_FLUSH = 25, + FUSE_INIT = 26, + FUSE_OPENDIR = 27, + FUSE_READDIR = 28, + FUSE_RELEASEDIR = 29, + FUSE_FSYNCDIR = 30, + FUSE_GETLK = 31, + FUSE_SETLK = 32, + FUSE_SETLKW = 33, + FUSE_ACCESS = 34, + FUSE_CREATE = 35, + FUSE_INTERRUPT = 36, + FUSE_BMAP = 37, + FUSE_DESTROY = 38, + FUSE_IOCTL = 39, + FUSE_POLL = 40, + FUSE_NOTIFY_REPLY = 41, + FUSE_BATCH_FORGET = 42, + FUSE_FALLOCATE = 43, + FUSE_READDIRPLUS = 44, + FUSE_RENAME2 = 45, + FUSE_LSEEK = 46, + FUSE_COPY_FILE_RANGE = 47, + FUSE_SETUPMAPPING = 48, + FUSE_REMOVEMAPPING = 49, + FUSE_SYNCFS = 50, + FUSE_TMPFILE = 51, + FUSE_STATX = 52, + + /* CUSE specific operations */ + CUSE_INIT = 4096, + + /* Reserved opcodes: helpful to detect structure endian-ness */ + CUSE_INIT_BSWAP_RESERVED = 1048576, /* CUSE_INIT << 8 */ + FUSE_INIT_BSWAP_RESERVED = 436207616, /* FUSE_INIT << 24 */ +}; + +enum fuse_notify_code { + FUSE_NOTIFY_POLL = 1, + FUSE_NOTIFY_INVAL_INODE = 2, + FUSE_NOTIFY_INVAL_ENTRY = 3, + FUSE_NOTIFY_STORE = 4, + FUSE_NOTIFY_RETRIEVE = 5, + FUSE_NOTIFY_DELETE = 6, + FUSE_NOTIFY_RESEND = 7, + FUSE_NOTIFY_CODE_MAX, +}; + +/* The read buffer is required to be at least 8k, but may be much larger */ +#define FUSE_MIN_READ_BUFFER 8192 + +#define FUSE_COMPAT_ENTRY_OUT_SIZE 120 + +struct fuse_entry_out { + uint64_t nodeid; /* Inode ID */ + uint64_t generation; /* Inode generation: nodeid:gen must + be unique for the fs's lifetime */ + uint64_t entry_valid; /* Cache timeout for the name */ + uint64_t attr_valid; /* Cache timeout for the attributes */ + uint32_t entry_valid_nsec; + uint32_t attr_valid_nsec; + struct fuse_attr attr; +}; + +struct fuse_forget_in { + uint64_t nlookup; +}; + +struct fuse_forget_one { + uint64_t nodeid; + uint64_t nlookup; +}; + +struct fuse_batch_forget_in { + uint32_t count; + uint32_t dummy; +}; + +struct fuse_getattr_in { + uint32_t getattr_flags; + uint32_t dummy; + uint64_t fh; +}; + +#define FUSE_COMPAT_ATTR_OUT_SIZE 96 + +struct fuse_attr_out { + uint64_t attr_valid; /* Cache timeout for the attributes */ + uint32_t attr_valid_nsec; + uint32_t dummy; + struct fuse_attr attr; +}; + +struct fuse_statx_in { + uint32_t getattr_flags; + uint32_t reserved; + uint64_t fh; + uint32_t sx_flags; + uint32_t sx_mask; +}; + +struct fuse_statx_out { + uint64_t attr_valid; /* Cache timeout for the attributes */ + uint32_t attr_valid_nsec; + uint32_t flags; + uint64_t spare[2]; + struct fuse_statx stat; +}; + +#define FUSE_COMPAT_MKNOD_IN_SIZE 8 + +struct fuse_mknod_in { + uint32_t mode; + uint32_t rdev; + uint32_t umask; + uint32_t padding; +}; + +struct fuse_mkdir_in { + uint32_t mode; + uint32_t umask; +}; + +struct fuse_rename_in { + uint64_t newdir; +}; + +struct fuse_rename2_in { + uint64_t newdir; + uint32_t flags; + uint32_t padding; +}; + +struct fuse_link_in { + uint64_t oldnodeid; +}; + +struct fuse_setattr_in { + uint32_t valid; + uint32_t padding; + uint64_t fh; + uint64_t size; + uint64_t lock_owner; + uint64_t atime; + uint64_t mtime; + uint64_t ctime; + uint32_t atimensec; + uint32_t mtimensec; + uint32_t ctimensec; + uint32_t mode; + uint32_t unused4; + uint32_t uid; + uint32_t gid; + uint32_t unused5; +}; + +struct fuse_open_in { + uint32_t flags; + uint32_t open_flags; /* FUSE_OPEN_... */ +}; + +struct fuse_create_in { + uint32_t flags; + uint32_t mode; + uint32_t umask; + uint32_t open_flags; /* FUSE_OPEN_... */ +}; + +struct fuse_open_out { + uint64_t fh; + uint32_t open_flags; + int32_t backing_id; +}; + +struct fuse_release_in { + uint64_t fh; + uint32_t flags; + uint32_t release_flags; + uint64_t lock_owner; +}; + +struct fuse_flush_in { + uint64_t fh; + uint32_t unused; + uint32_t padding; + uint64_t lock_owner; +}; + +struct fuse_read_in { + uint64_t fh; + uint64_t offset; + uint32_t size; + uint32_t read_flags; + uint64_t lock_owner; + uint32_t flags; + uint32_t padding; +}; + +#define FUSE_COMPAT_WRITE_IN_SIZE 24 + +struct fuse_write_in { + uint64_t fh; + uint64_t offset; + uint32_t size; + uint32_t write_flags; + uint64_t lock_owner; + uint32_t flags; + uint32_t padding; +}; + +struct fuse_write_out { + uint32_t size; + uint32_t padding; +}; + +#define FUSE_COMPAT_STATFS_SIZE 48 + +struct fuse_statfs_out { + struct fuse_kstatfs st; +}; + +struct fuse_fsync_in { + uint64_t fh; + uint32_t fsync_flags; + uint32_t padding; +}; + +#define FUSE_COMPAT_SETXATTR_IN_SIZE 8 + +struct fuse_setxattr_in { + uint32_t size; + uint32_t flags; + uint32_t setxattr_flags; + uint32_t padding; +}; + +struct fuse_getxattr_in { + uint32_t size; + uint32_t padding; +}; + +struct fuse_getxattr_out { + uint32_t size; + uint32_t padding; +}; + +struct fuse_lk_in { + uint64_t fh; + uint64_t owner; + struct fuse_file_lock lk; + uint32_t lk_flags; + uint32_t padding; +}; + +struct fuse_lk_out { + struct fuse_file_lock lk; +}; + +struct fuse_access_in { + uint32_t mask; + uint32_t padding; +}; + +struct fuse_init_in { + uint32_t major; + uint32_t minor; + uint32_t max_readahead; + uint32_t flags; + uint32_t flags2; + uint32_t unused[11]; +}; + +#define FUSE_COMPAT_INIT_OUT_SIZE 8 +#define FUSE_COMPAT_22_INIT_OUT_SIZE 24 + +struct fuse_init_out { + uint32_t major; + uint32_t minor; + uint32_t max_readahead; + uint32_t flags; + uint16_t max_background; + uint16_t congestion_threshold; + uint32_t max_write; + uint32_t time_gran; + uint16_t max_pages; + uint16_t map_alignment; + uint32_t flags2; + uint32_t max_stack_depth; + uint32_t unused[6]; +}; + +#define CUSE_INIT_INFO_MAX 4096 + +struct cuse_init_in { + uint32_t major; + uint32_t minor; + uint32_t unused; + uint32_t flags; +}; + +struct cuse_init_out { + uint32_t major; + uint32_t minor; + uint32_t unused; + uint32_t flags; + uint32_t max_read; + uint32_t max_write; + uint32_t dev_major; /* chardev major */ + uint32_t dev_minor; /* chardev minor */ + uint32_t spare[10]; +}; + +struct fuse_interrupt_in { + uint64_t unique; +}; + +struct fuse_bmap_in { + uint64_t block; + uint32_t blocksize; + uint32_t padding; +}; + +struct fuse_bmap_out { + uint64_t block; +}; + +struct fuse_ioctl_in { + uint64_t fh; + uint32_t flags; + uint32_t cmd; + uint64_t arg; + uint32_t in_size; + uint32_t out_size; +}; + +struct fuse_ioctl_iovec { + uint64_t base; + uint64_t len; +}; + +struct fuse_ioctl_out { + int32_t result; + uint32_t flags; + uint32_t in_iovs; + uint32_t out_iovs; +}; + +struct fuse_poll_in { + uint64_t fh; + uint64_t kh; + uint32_t flags; + uint32_t events; +}; + +struct fuse_poll_out { + uint32_t revents; + uint32_t padding; +}; + +struct fuse_notify_poll_wakeup_out { + uint64_t kh; +}; + +struct fuse_fallocate_in { + uint64_t fh; + uint64_t offset; + uint64_t length; + uint32_t mode; + uint32_t padding; +}; + +/** + * FUSE request unique ID flag + * + * Indicates whether this is a resend request. The receiver should handle this + * request accordingly. + */ +#define FUSE_UNIQUE_RESEND (1ULL << 63) + +struct fuse_in_header { + uint32_t len; + uint32_t opcode; + uint64_t unique; + uint64_t nodeid; + uint32_t uid; + uint32_t gid; + uint32_t pid; + uint16_t total_extlen; /* length of extensions in 8byte units */ + uint16_t padding; +}; + +struct fuse_out_header { + uint32_t len; + int32_t error; + uint64_t unique; +}; + +struct fuse_dirent { + uint64_t ino; + uint64_t off; + uint32_t namelen; + uint32_t type; + char name[]; +}; + +/* Align variable length records to 64bit boundary */ +#define FUSE_REC_ALIGN(x) \ + (((x) + sizeof(uint64_t) - 1) & ~(sizeof(uint64_t) - 1)) + +#define FUSE_NAME_OFFSET offsetof(struct fuse_dirent, name) +#define FUSE_DIRENT_ALIGN(x) FUSE_REC_ALIGN(x) +#define FUSE_DIRENT_SIZE(d) \ + FUSE_DIRENT_ALIGN(FUSE_NAME_OFFSET + (d)->namelen) + +struct fuse_direntplus { + struct fuse_entry_out entry_out; + struct fuse_dirent dirent; +}; + +#define FUSE_NAME_OFFSET_DIRENTPLUS \ + offsetof(struct fuse_direntplus, dirent.name) +#define FUSE_DIRENTPLUS_SIZE(d) \ + FUSE_DIRENT_ALIGN(FUSE_NAME_OFFSET_DIRENTPLUS + (d)->dirent.namelen) + +struct fuse_notify_inval_inode_out { + uint64_t ino; + int64_t off; + int64_t len; +}; + +struct fuse_notify_inval_entry_out { + uint64_t parent; + uint32_t namelen; + uint32_t flags; +}; + +struct fuse_notify_delete_out { + uint64_t parent; + uint64_t child; + uint32_t namelen; + uint32_t padding; +}; + +struct fuse_notify_store_out { + uint64_t nodeid; + uint64_t offset; + uint32_t size; + uint32_t padding; +}; + +struct fuse_notify_retrieve_out { + uint64_t notify_unique; + uint64_t nodeid; + uint64_t offset; + uint32_t size; + uint32_t padding; +}; + +/* Matches the size of fuse_write_in */ +struct fuse_notify_retrieve_in { + uint64_t dummy1; + uint64_t offset; + uint32_t size; + uint32_t dummy2; + uint64_t dummy3; + uint64_t dummy4; +}; + +struct fuse_backing_map { + int32_t fd; + uint32_t flags; + uint64_t padding; +}; + +/* Device ioctls: */ +#define FUSE_DEV_IOC_MAGIC 229 +#define FUSE_DEV_IOC_CLONE _IOR(FUSE_DEV_IOC_MAGIC, 0, uint32_t) +#define FUSE_DEV_IOC_BACKING_OPEN _IOW(FUSE_DEV_IOC_MAGIC, 1, \ + struct fuse_backing_map) +#define FUSE_DEV_IOC_BACKING_CLOSE _IOW(FUSE_DEV_IOC_MAGIC, 2, uint32_t) + +struct fuse_lseek_in { + uint64_t fh; + uint64_t offset; + uint32_t whence; + uint32_t padding; +}; + +struct fuse_lseek_out { + uint64_t offset; +}; + +struct fuse_copy_file_range_in { + uint64_t fh_in; + uint64_t off_in; + uint64_t nodeid_out; + uint64_t fh_out; + uint64_t off_out; + uint64_t len; + uint64_t flags; +}; + +#define FUSE_SETUPMAPPING_FLAG_WRITE (1ull << 0) +#define FUSE_SETUPMAPPING_FLAG_READ (1ull << 1) +struct fuse_setupmapping_in { + /* An already open handle */ + uint64_t fh; + /* Offset into the file to start the mapping */ + uint64_t foffset; + /* Length of mapping required */ + uint64_t len; + /* Flags, FUSE_SETUPMAPPING_FLAG_* */ + uint64_t flags; + /* Offset in Memory Window */ + uint64_t moffset; +}; + +struct fuse_removemapping_in { + /* number of fuse_removemapping_one follows */ + uint32_t count; +}; + +struct fuse_removemapping_one { + /* Offset into the dax window start the unmapping */ + uint64_t moffset; + /* Length of mapping required */ + uint64_t len; +}; + +#define FUSE_REMOVEMAPPING_MAX_ENTRY \ + (PAGE_SIZE / sizeof(struct fuse_removemapping_one)) + +struct fuse_syncfs_in { + uint64_t padding; +}; + +/* + * For each security context, send fuse_secctx with size of security context + * fuse_secctx will be followed by security context name and this in turn + * will be followed by actual context label. + * fuse_secctx, name, context + */ +struct fuse_secctx { + uint32_t size; + uint32_t padding; +}; + +/* + * Contains the information about how many fuse_secctx structures are being + * sent and what's the total size of all security contexts (including + * size of fuse_secctx_header). + * + */ +struct fuse_secctx_header { + uint32_t size; + uint32_t nr_secctx; +}; + +/** + * struct fuse_ext_header - extension header + * @size: total size of this extension including this header + * @type: type of extension + * + * This is made compatible with fuse_secctx_header by using type values > + * FUSE_MAX_NR_SECCTX + */ +struct fuse_ext_header { + uint32_t size; + uint32_t type; +}; + +/** + * struct fuse_supp_groups - Supplementary group extension + * @nr_groups: number of supplementary groups + * @groups: flexible array of group IDs + */ +struct fuse_supp_groups { + uint32_t nr_groups; + uint32_t groups[]; +}; + +#endif /* _LINUX_FUSE_H */ diff --git a/support/check.h b/support/check.h index 711f34b83b..7ea22c7a2c 100644 --- a/support/check.h +++ b/support/check.h @@ -25,6 +25,11 @@ __BEGIN_DECLS /* Record a test failure, print the failure message to standard output + and pass the result of 1 through. */ +#define FAIL(...) \ + support_print_failure_impl (__FILE__, __LINE__, __VA_ARGS__) + +/* Record a test failure, print the failure message to standard output and return 1. */ #define FAIL_RET(...) \ return support_print_failure_impl (__FILE__, __LINE__, __VA_ARGS__) diff --git a/support/file_contents.h b/support/file_contents.h new file mode 100644 index 0000000000..9b2d750aae --- /dev/null +++ b/support/file_contents.h @@ -0,0 +1,63 @@ +/* Functionality for checking file contents. + Copyright (C) 2024 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <https://www.gnu.org/licenses/>. */ + +#ifndef SUPPORT_FILE_CONTENTS_H +#define SUPPORT_FILE_CONTENTS_H + +#include <support/check.h> +#include <stdio.h> + +__BEGIN_DECLS + +/* Check that an already-open file has exactly the given bytes, + starting at the current location in the file. The file position + indicator is updated to point after the bytes compared. Return 0 + if equal, 1 otherwise or on read error. */ +int support_compare_file_bytes (FILE *fp, const char *contents, size_t length); + +/* Check that an already-open file has exactly the given string as + contents, starting at the current offset. The file position + indicator is updated to point after the bytes compared. Return 0 + if equal, 1 otherwise or on read error. */ +int support_compare_file_string (FILE *fp, const char *contents); + +/* Check that a not-currently-open file has exactly the given bytes. + Return 0 if equal, 1 otherwise or on read error. */ +int support_open_and_compare_file_bytes (const char *file, + const char *contents, + size_t length); + +/* Check that a not-currently-open file has exactly the given string + as contents, starting at the current offset. Return 0 if equal, 1 + otherwise or on read error. */ +int support_open_and_compare_file_string (const char *file, + const char *contents); + +/* Compare bytes read from an open file with the given string. The + file position indicator is updated to point after the bytes + compared. */ +#define TEST_COMPARE_FILE_STRING(FP, CONTENTS) \ + TEST_COMPARE (support_compare_file_string (FP, CONTENTS), 0) + +/* Read a file and compare bytes read from it with the given string. */ +#define TEST_OPEN_AND_COMPARE_FILE_STRING(FILE, CONTENTS) \ + TEST_COMPARE (support_open_and_compare_file_string (FILE, CONTENTS), 0) + +__END_DECLS + +#endif /* SUPPORT_FILE_CONTENTS_H */ diff --git a/support/fuse.h b/support/fuse.h new file mode 100644 index 0000000000..1c862bedbe --- /dev/null +++ b/support/fuse.h @@ -0,0 +1,217 @@ +/* Facilities for FUSE-backed file system tests. + Copyright (C) 2024 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <https://www.gnu.org/licenses/>. */ + +/* To run FUSE tests under valgrind, pass the + --sim-hints=fuse-compatible option to valgrind. This option tells + valgrind that additional system calls effectively call back into + the current program. */ + +#ifndef SUPPORT_FUSE_H +#define SUPPORT_FUSE_H + +#include <stdbool.h> +#include <stddef.h> +#include <stdint.h> +#include <stdlib.h> + +#include <support/bundled/linux/include/uapi/linux/fuse.h> + +/* This function must be called furst, before support_fuse_mount, to + prepare unprivileged mounting. */ +void support_fuse_init (void); + +/* This function can be called instead of support_fuse_init. It does + not use mount and user namespaces, so it requires root privileges, + and cleanup after testing may be incomplete. This is intended only + for test development. */ +void support_fuse_init_no_namespace (void); + +/* Opaque type for tracking FUSE mount state. */ +struct support_fuse; + +/* This function disables a mount point created using + support_fuse_mount. */ +void support_fuse_unmount (struct support_fuse *) __nonnull ((1)); + +/* This function is called on a separate thread after calling + support_fuse_mount. F is the mount state, and CLOSURE the argument + that was passed to support_fuse_mount. The callback function is + expected to call support_fuse_next to read packets from the kernel + and handle them according to the test's need. */ +typedef void (*support_fuse_callback) (struct support_fuse *f, void *closure); + +/* This function creates a new mount point, implemented by CALLBACK. + CLOSURE is passed to CALLBACK as the second argument. */ +struct support_fuse *support_fuse_mount (support_fuse_callback callback, + void *closure) + __nonnull ((1)) __attr_dealloc (support_fuse_unmount, 1); + +/* This function returns the path to the mount point for F. The + returned string is valid until support_fuse_unmount (F) is called. */ +const char * support_fuse_mountpoint (struct support_fuse *f) __nonnull ((1)); + + +/* Renders the OPCODE as a string (FUSE_* constant. The caller must + free the returned string. */ +char * support_fuse_opcode (uint32_t opcode) __attr_dealloc_free; + +/* Use to provide a checked cast facility. Use the + support_fuse_in_cast macro below. */ +void *support_fuse_cast_internal (struct fuse_in_header *, uint32_t) + __nonnull ((1)); +void *support_fuse_cast_name_internal (struct fuse_in_header *, uint32_t, + size_t skip, char **name) + __nonnull ((1)); + +/* The macro expansion support_fuse_in_cast (P, TYPE) casts the + pointer INH to the appropriate type corresponding to the FUSE_TYPE + opcode. It fails (terminates the process) if INH->opcode does not + match FUSE_TYPE. The type of the returned pointer matches that of + the FUSE_* constant. + + Maintenance note: Adding support for additional struct fuse_*_in + types is generally easy, except when there is trailing data after + the struct (see below for support_fuse_cast_name, for example), and + the kernel has changed struct sizes over time. This has happened + recently with struct fuse_setxattr_in, and would require special + handling if implemented. */ +#define support_fuse_payload_type_INIT struct fuse_init_in +#define support_fuse_payload_type_LOOKUP char +#define support_fuse_payload_type_OPEN struct fuse_open_in +#define support_fuse_payload_type_READ struct fuse_read_in +#define support_fuse_payload_type_SETATTR struct fuse_setattr_in +#define support_fuse_payload_type_WRITE struct fuse_write_in +#define support_fuse_cast(typ, inh) \ + ((support_fuse_payload_type_##typ *) \ + support_fuse_cast_internal ((inh), FUSE_##typ)) + +/* Same as support_fuse_cast, but also writes the passed name to *NAMEP. */ +#define support_fuse_payload_name_type_CREATE struct fuse_create_in +#define support_fuse_payload_name_type_MKDIR struct fuse_mkdir_in +#define support_fuse_cast_name(typ, inh, namep) \ + ((support_fuse_payload_name_type_##typ *) \ + support_fuse_cast_name_internal \ + ((inh), FUSE_##typ, sizeof (support_fuse_payload_name_type_##typ), \ + (namep))) + +/* This function should be called from the callback function. It + returns NULL if the mount point has been unmounted. The result can + be cast using support_fuse_in_cast. The pointer is invalidated + with the next call to support_fuse_next. + + Typical use involves handling some basics using the + support_fuse_handle_* building blocks, following by a switch + statement on the result member of the returned struct, to implement + what a particular test needs. Casts to payload data should be made + using support_fuse_in_cast. + + By default, FUSE_FORGET responses are filtered. See + support_fuse_filter_forget for turning that off. */ +struct fuse_in_header *support_fuse_next (struct support_fuse *f) + __nonnull ((1)); + +/* This function can be called from a callback function to handle + basic aspects of directories (OPENDIR, GETATTR, RELEASEDIR). + inh->nodeid is used as the inode number for the directory. This + function must be called after support_fuse_next. */ +bool support_fuse_handle_directory (struct support_fuse *f) __nonnull ((1)); + +/* This function can be called from a callback function to handle + access to the mount point itself, after call support_fuse_next. */ +bool support_fuse_handle_mountpoint (struct support_fuse *f) __nonnull ((1)); + +/* If FILTER_ENABLED, future support_fuse_next calls will not return + FUSE_FORGET events (and simply discared them, as they require no + reply). If !FILTER_ENABLED, the callback needs to handle + FUSE_FORGET events and call support_fuse_no_reply. */ +void support_fuse_filter_forget (struct support_fuse *f, bool filter_enabled) + __nonnull ((1)); + +/* This function should be called from the callback function after + support_fuse_next returned a non-null pointer. It sends out a + response packet on the FUSE device with the supplied payload data. */ +void support_fuse_reply (struct support_fuse *f, + const void *payload, size_t payload_size) + __nonnull ((1)) __attr_access ((__read_only__, 2, 3)); + +/* This function should be called from the callback function. It + replies to a request with an error indicator. ERROR must be positive. */ +void support_fuse_reply_error (struct support_fuse *f, uint32_t error) + __nonnull ((1)); + +/* This function should be called from the callback function. It + sends out an empty (but success-indicating) reply packet. */ +void support_fuse_reply_empty (struct support_fuse *f) __nonnull ((1)); + +/* Do not send a reply. Only to be used after a support_fuse_next + call that returned a FUSE_FORGET event. */ +void support_fuse_no_reply (struct support_fuse *f) __nonnull ((1)); + +/* Specific reponse preparation functions. The returned object can be + updated as needed. If a NODEID argument is present, it will be + used to set the inode and FUSE nodeid fields. Without such an + argument, it is initialized from the current request (if the reply + requires this field). This function must be called after + support_fuse_next. The actual response must be sent using + support_fuse_reply_prepared (or a support_fuse_reply_error call can + be used to cancel the response). */ +struct fuse_entry_out *support_fuse_prepare_entry (struct support_fuse *f, + uint64_t nodeid) + __nonnull ((1)); +struct fuse_attr_out *support_fuse_prepare_attr (struct support_fuse *f) + __nonnull ((1)); + +/* Similar to the other support_fuse_prepare_* functions, but it + prepares for two response packets. They can be updated through the + pointers written to *OUT_ENTRY and *OUT_OPEN prior to calling + support_fuse_reply_prepared. */ +void support_fuse_prepare_create (struct support_fuse *f, + uint64_t nodeid, + struct fuse_entry_out **out_entry, + struct fuse_open_out **out_open) + __nonnull ((1, 3, 4)); + + +/* Prepare sending a directory stream. Must be called after + support_fuse_next and before support_fuse_dirstream_add. */ +struct support_fuse_dirstream; +struct support_fuse_dirstream *support_fuse_prepare_readdir (struct + support_fuse *f); + +/* Adds directory using D_INO, D_OFF, D_TYPE, D_NAME to the directory + stream D. Must be called after support_fuse_prepare_readdir. + + D_OFF is the offset of the next directory entry, not the current + one. The first entry has offset zero. The first requested offset + can be obtained from the READ payload (struct fuse_read_in) prior + to calling this function. + + Returns true if the entry could be added to the buffer, or false if + there was insufficient room. Sending the buffer is delayed until + support_fuse_reply_prepared is called. */ +bool support_fuse_dirstream_add (struct support_fuse_dirstream *d, + uint64_t d_ino, uint64_t d_off, + uint32_t d_type, + const char *d_name); + +/* Send a prepared response. Must be called after one of the + support_fuse_prepare_* functions and before the next + support_fuse_next call. */ +void support_fuse_reply_prepared (struct support_fuse *f) __nonnull ((1)); + +#endif /* SUPPORT_FUSE_H */ diff --git a/support/process_state.h b/support/process_state.h index 1cf902e91b..9541d8c343 100644 --- a/support/process_state.h +++ b/support/process_state.h @@ -31,13 +31,16 @@ enum support_process_state support_process_state_dead = 0x20, /* X (dead). */ support_process_state_zombie = 0x40, /* Z (zombie). */ support_process_state_parked = 0x80, /* P (parked). */ + support_process_state_invalid = 0x100 /* Invalid state. */ }; /* Wait for process PID to reach state STATE. It can be a combination of multiple possible states ('process_state_running | process_state_sleeping') where the function return when any of these state are observed. For an invalid state not represented by SUPPORT_PROCESS_STATE, it fallbacks - to a 2 second sleep. */ -void support_process_state_wait (pid_t pid, enum support_process_state state); + to a 2 second sleep. + Return the found process state. */ +enum support_process_state +support_process_state_wait (pid_t pid, enum support_process_state state); #endif diff --git a/support/readdir.h b/support/readdir.h new file mode 100644 index 0000000000..7d7c7650d4 --- /dev/null +++ b/support/readdir.h @@ -0,0 +1,85 @@ +/* Type-generic wrapper for readdir functions. + Copyright (C) 2024 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <https://www.gnu.org/licenses/>. */ + +#ifndef SUPPORT_READDIR_H +#define SUPPORT_READDIR_H + +#include <dirent.h> +#include <stdbool.h> +#include <stdint.h> + +__BEGIN_DECLS + +/* Definition independent of _FILE_OFFSET_BITS. */ +struct support_dirent +{ + uint64_t d_ino; + uint64_t d_off; /* 0 if d_off is not supported. */ + uint32_t d_type; + char *d_name; +}; + +/* Operation to be performed by support_readdir below. */ +enum support_readdir_op + { + SUPPORT_READDIR, + SUPPORT_READDIR64, + SUPPORT_READDIR_R, + SUPPORT_READDIR64_R, + SUPPORT_READDIR64_COMPAT, + SUPPORT_READDIR64_R_COMPAT, + }; + +/* Returns the last supported function. May exclude + SUPPORT_READDIR64_R_COMPAT if not implemented. */ +enum support_readdir_op support_readdir_op_last (void); + +/* Returns the name of the function that corresponds to the OP constant. */ +const char *support_readdir_function (enum support_readdir_op op); + +/* Returns the d_ino field width for OP, in bits. */ +unsigned int support_readdir_inode_width (enum support_readdir_op op); + +/* Returns the d_off field width for OP, in bits. Zero if not present. */ +unsigned int support_readdir_offset_width (enum support_readdir_op op); + +/* Returns true if OP is an _r variant with name length restrictions. */ +bool support_readdir_r_variant (enum support_readdir_op op); + +/* First, free E->d_name and set the field to NULL. Then call the + readdir variant as specified by OP. If successfully, copy fields + to E, make a copy of the entry name using strdup, and write its + addres sto E->d_name. + + Return true if an entry was read, or false if the end of the + directory stream was reached. Terminates the process upon error. + The caller is expected to free E->d_name if the function is not + called again for this E. + + Note that this function assumes that E->d_name has been initialized + to NULL or has been allocated by a previous call to this function. */ +bool support_readdir (DIR *stream, enum support_readdir_op op, + struct support_dirent *e) __nonnull ((1, 3)); + +/* Checks that the readdir operation OP fails with errno value EXPECTED. */ +void support_readdir_expect_error (DIR *stream, enum support_readdir_op op, + int expected) __nonnull ((1)); + +__END_DECLS + +#endif /* SUPPORT_READDIR_H */ diff --git a/support/xlstat.c b/support/support_check_stat_fd.c index 87df988879..4c12adf6b7 100644 --- a/support/xlstat.c +++ b/support/support_check_stat_fd.c @@ -1,5 +1,5 @@ -/* lstat64 with error checking. - Copyright (C) 2017-2024 Free Software Foundation, Inc. +/* Error checking for descriptor-based stat functions. + Copyright (C) 2024 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or @@ -18,11 +18,10 @@ #include <support/check.h> #include <support/xunistd.h> -#include <sys/stat.h> void -xlstat (const char *path, struct stat64 *result) +support_check_stat_fd (const char *name, int fd, int result) { - if (lstat64 (path, result) != 0) - FAIL_EXIT1 ("lstat64 (\"%s\"): %m", path); + if (result != 0) + FAIL_EXIT1 ("%s (%d): %m", name, fd); } diff --git a/support/support-xfstat.c b/support/support_check_stat_path.c index ab4b01c97d..3cf72afe59 100644 --- a/support/support-xfstat.c +++ b/support/support_check_stat_path.c @@ -1,4 +1,4 @@ -/* fstat64 with error checking. +/* Error checking for path-based stat functions. Copyright (C) 2017-2024 Free Software Foundation, Inc. This file is part of the GNU C Library. @@ -18,11 +18,10 @@ #include <support/check.h> #include <support/xunistd.h> -#include <sys/stat.h> void -xfstat (int fd, struct stat64 *result) +support_check_stat_path (const char *name, const char *path, int result) { - if (fstat64 (fd, result) != 0) - FAIL_EXIT1 ("fstat64 (%d): %m", fd); + if (result != 0) + FAIL_EXIT1 ("%s (\"%s\"): %m", name, path); } diff --git a/support/support_compare_file_bytes.c b/support/support_compare_file_bytes.c new file mode 100644 index 0000000000..e261e1da8f --- /dev/null +++ b/support/support_compare_file_bytes.c @@ -0,0 +1,42 @@ +/* Compare bytes from an open file. + Copyright (C) 2024 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <https://www.gnu.org/licenses/>. */ + +#include <stdio.h> + +#include <support/file_contents.h> + +/* Check that an already-open file has exactly the given bytes, + starting at the current offset. */ + +int +support_compare_file_bytes (FILE *fp, const char *contents, size_t length) +{ + int c; + while (length > 0) + { + c = getc (fp); + if (c == EOF || (unsigned char) c != (unsigned char) contents[0]) + return 1; + contents++; + length--; + } + c = getc (fp); + if (c != EOF || ferror (fp)) + return 1; + return 0; +} diff --git a/support/support_compare_file_string.c b/support/support_compare_file_string.c new file mode 100644 index 0000000000..04513c3af1 --- /dev/null +++ b/support/support_compare_file_string.c @@ -0,0 +1,28 @@ +/* Compare string from an open file. + Copyright (C) 2024 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <https://www.gnu.org/licenses/>. */ + +#include <stdio.h> +#include <string.h> + +#include <support/file_contents.h> + +int +support_compare_file_string (FILE *fp, const char *contents) +{ + return support_compare_file_bytes (fp, contents, strlen (contents)); +} diff --git a/support/support_format_addrinfo.c b/support/support_format_addrinfo.c index cbc72910a9..77f4db345c 100644 --- a/support/support_format_addrinfo.c +++ b/support/support_format_addrinfo.c @@ -22,6 +22,7 @@ #include <errno.h> #include <stdio.h> #include <stdlib.h> +#include <string.h> #include <support/support.h> #include <support/xmemstream.h> diff --git a/support/support_fuse.c b/support/support_fuse.c new file mode 100644 index 0000000000..f6c063b549 --- /dev/null +++ b/support/support_fuse.c @@ -0,0 +1,706 @@ +/* Facilities for FUSE-backed file system tests. + Copyright (C) 2024 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <https://www.gnu.org/licenses/>. */ + +#include <support/fuse.h> + +#include <dirent.h> +#include <errno.h> +#include <fcntl.h> +#include <string.h> +#include <sys/sysmacros.h> +#include <sys/uio.h> +#include <unistd.h> + +#include <array_length.h> +#include <support/check.h> +#include <support/namespace.h> +#include <support/support.h> +#include <support/test-driver.h> +#include <support/xdirent.h> +#include <support/xthread.h> +#include <support/xunistd.h> + +#ifdef __linux__ +# include <sys/mount.h> +#else +/* Fallback definitions that mark the test as unsupported. */ +# define mount(...) ({ FAIL_UNSUPPORTED ("mount"); -1; }) +# define umount(...) ({ FAIL_UNSUPPORTED ("mount"); -1; }) +#endif + +struct support_fuse +{ + char *mountpoint; + void *buffer_start; /* Begin of allocation. */ + void *buffer_next; /* Next read position. */ + void *buffer_limit; /* End of buffered data. */ + void *buffer_end; /* End of allocation. */ + struct fuse_in_header *inh; /* Most recent request (support_fuse_next). */ + union /* Space for prepared responses. */ + { + struct fuse_attr_out attr; + struct fuse_entry_out entry; + struct + { + struct fuse_entry_out entry; + struct fuse_open_out open; + } create; + } prepared; + void *prepared_pointer; /* NULL if inactive. */ + size_t prepared_size; /* 0 if inactive. */ + + /* Used for preparing readdir responses. Already used-up area for + the current request is counted by prepared_size. */ + void *readdir_buffer; + size_t readdir_buffer_size; + + pthread_t handler; /* Thread handling requests. */ + uid_t uid; /* Cached value for the current process. */ + uid_t gid; /* Cached value for the current process. */ + int fd; /* FUSE file descriptor. */ + int connection; /* Entry under /sys/fs/fuse/connections. */ + bool filter_forget; /* Controls FUSE_FORGET event dropping. */ + _Atomic bool disconnected; +}; + +struct fuse_thread_wrapper_args +{ + struct support_fuse *f; + support_fuse_callback callback; + void *closure; +}; + +/* Set by support_fuse_init to indicate that support_fuse_mount may be + called. */ +static bool support_fuse_init_called; + +/* Allocate the read buffer in F with SIZE bytes capacity. Does not + free the previously allocated buffer. */ +static void support_fuse_allocate (struct support_fuse *f, size_t size) + __nonnull ((1)); + +/* Internal mkdtemp replacement */ +static char * support_fuse_mkdir (const char *prefix) __nonnull ((1)); + +/* Low-level allocation function for support_fuse_mount. Does not + perform the mount. */ +static struct support_fuse *support_fuse_open (void); + +/* Thread wrapper function for use with pthread_create. Uses struct + fuse_thread_wrapper_args. */ +static void *support_fuse_thread_wrapper (void *closure) __nonnull ((1)); + +/* Initial step before preparing a reply. SIZE must be the size of + the F->prepared member that is going to be used. */ +static void support_fuse_prepare_1 (struct support_fuse *f, size_t size); + +/* Similar to support_fuse_reply_error, but not check that ERROR is + not zero. */ +static void support_fuse_reply_error_1 (struct support_fuse *f, + uint32_t error) __nonnull ((1)); + +/* Path to the directory containing mount points. Initialized by an + ELF constructor. All mountpoints are collected there so that the + test wrapper can clean them up without keeping track of them + individually. */ +static char *support_fuse_mountpoints; + +/* PID of the process that should clean up the mount points in the ELF + destructor. */ +static pid_t support_fuse_cleanup_pid; + +static void +support_fuse_allocate (struct support_fuse *f, size_t size) +{ + f->buffer_start = xmalloc (size); + f->buffer_end = f->buffer_start + size; + f->buffer_limit = f->buffer_start; + f->buffer_next = f->buffer_limit; +} + +void +support_fuse_filter_forget (struct support_fuse *f, bool filter) +{ + f->filter_forget = filter; +} + +void * +support_fuse_cast_internal (struct fuse_in_header *p, uint32_t expected) +{ + if (expected != p->opcode + && !(expected == FUSE_READ && p->opcode == FUSE_READDIR)) + { + char *expected1 = support_fuse_opcode (expected); + char *actual = support_fuse_opcode (p->opcode); + FAIL_EXIT1 ("attempt to cast %s to %s", actual, expected1); + } + return p + 1; +} + +void * +support_fuse_cast_name_internal (struct fuse_in_header *p, uint32_t expected, + size_t skip, char **name) +{ + char *result = support_fuse_cast_internal (p, expected); + *name = result + skip; + return result; +} + +bool +support_fuse_dirstream_add (struct support_fuse_dirstream *d, + uint64_t d_ino, uint64_t d_off, + uint32_t d_type, const char *d_name) +{ + struct support_fuse *f = (struct support_fuse *) d; + size_t structlen = offsetof (struct fuse_dirent, name); + size_t namelen = strlen (d_name); /* No null termination. */ + size_t required_size = FUSE_DIRENT_ALIGN (structlen + namelen); + if (f->readdir_buffer_size - f->prepared_size < required_size) + return false; + struct fuse_dirent entry = + { + .ino = d_ino, + .off = d_off, + .type = d_type, + .namelen = namelen, + }; + memcpy (f->readdir_buffer + f->prepared_size, &entry, structlen); + /* Use strncpy to write padding and avoid passing uninitialized + bytes to the read system call. */ + strncpy (f->readdir_buffer + f->prepared_size + structlen, d_name, + required_size - structlen); + f->prepared_size += required_size; + return true; +} + +bool +support_fuse_handle_directory (struct support_fuse *f) +{ + TEST_VERIFY (f->inh != NULL); + switch (f->inh->opcode) + { + case FUSE_OPENDIR: + { + struct fuse_open_out out = + { + }; + support_fuse_reply (f, &out, sizeof (out)); + } + return true; + case FUSE_RELEASEDIR: + support_fuse_reply_empty (f); + return true; + case FUSE_GETATTR: + { + struct fuse_attr_out *out = support_fuse_prepare_attr (f); + out->attr.mode = S_IFDIR | 0700; + support_fuse_reply_prepared (f); + } + return true; + default: + return false; + } +} + +bool +support_fuse_handle_mountpoint (struct support_fuse *f) +{ + TEST_VERIFY (f->inh != NULL); + /* 1 is the root node. */ + if (f->inh->opcode == FUSE_GETATTR && f->inh->nodeid == 1) + return support_fuse_handle_directory (f); + return false; +} + +void +support_fuse_init (void) +{ + support_fuse_init_called = true; + + support_become_root (); + if (!support_enter_mount_namespace ()) + FAIL_UNSUPPORTED ("mount namespaces not supported"); +} + +void +support_fuse_init_no_namespace (void) +{ + support_fuse_init_called = true; +} + +static char * +support_fuse_mkdir (const char *prefix) +{ + /* Do not use mkdtemp to avoid interfering with its tests. */ + unsigned int counter = 1; + unsigned int pid = getpid (); + while (true) + { + char *path = xasprintf ("%s%u.%u/", prefix, pid, counter); + if (mkdir (path, 0700) == 0) + return path; + if (errno != EEXIST) + FAIL_EXIT1 ("mkdir (\"%s\"): %m", path); + free (path); + ++counter; + } +} + +struct support_fuse * +support_fuse_mount (support_fuse_callback callback, void *closure) +{ + TEST_VERIFY_EXIT (support_fuse_init_called); + + /* Request at least minor version 12 because it changed struct sizes. */ + enum { min_version = 12 }; + + struct support_fuse *f = support_fuse_open (); + char *mount_options + = xasprintf ("fd=%d,rootmode=040700,user_id=%u,group_id=%u", + f->fd, f->uid, f->gid); + if (mount ("fuse", f->mountpoint, "fuse.glibc", + MS_NOSUID|MS_NODEV, mount_options) + != 0) + FAIL_EXIT1 ("FUSE mount on %s: %m", f->mountpoint); + free (mount_options); + + /* Retry with an older FUSE version. */ + while (true) + { + struct fuse_in_header *inh = support_fuse_next (f); + struct fuse_init_in *init_in = support_fuse_cast (INIT, inh); + if (init_in->major < 7 + || (init_in->major == 7 && init_in->minor < min_version)) + FAIL_UNSUPPORTED ("kernel FUSE version is %u.%u, too old", + init_in->major, init_in->minor); + if (init_in->major > 7) + { + uint32_t major = 7; + support_fuse_reply (f, &major, sizeof (major)); + continue; + } + TEST_VERIFY (init_in->flags & FUSE_DONT_MASK); + struct fuse_init_out out = + { + .major = 7, + .minor = min_version, + /* Request that the kernel does not apply umask. */ + .flags = FUSE_DONT_MASK, + }; + support_fuse_reply (f, &out, sizeof (out)); + + { + struct fuse_thread_wrapper_args args = + { + .f = f, + .callback = callback, + .closure = closure, + }; + f->handler = xpthread_create (NULL, + support_fuse_thread_wrapper, &args); + struct stat64 st; + xstat64 (f->mountpoint, &st); + f->connection = minor (st.st_dev); + /* Got a reply from the thread, safe to deallocate args. */ + } + + return f; + } +} + +const char * +support_fuse_mountpoint (struct support_fuse *f) +{ + return f->mountpoint; +} + +void +support_fuse_no_reply (struct support_fuse *f) +{ + TEST_VERIFY (f->inh != NULL); + TEST_COMPARE (f->inh->opcode, FUSE_FORGET); + f->inh = NULL; +} + +char * +support_fuse_opcode (uint32_t op) +{ + const char *result; + switch (op) + { +#define X(n) case n: result = #n; break + X(FUSE_LOOKUP); + X(FUSE_FORGET); + X(FUSE_GETATTR); + X(FUSE_SETATTR); + X(FUSE_READLINK); + X(FUSE_SYMLINK); + X(FUSE_MKNOD); + X(FUSE_MKDIR); + X(FUSE_UNLINK); + X(FUSE_RMDIR); + X(FUSE_RENAME); + X(FUSE_LINK); + X(FUSE_OPEN); + X(FUSE_READ); + X(FUSE_WRITE); + X(FUSE_STATFS); + X(FUSE_RELEASE); + X(FUSE_FSYNC); + X(FUSE_SETXATTR); + X(FUSE_GETXATTR); + X(FUSE_LISTXATTR); + X(FUSE_REMOVEXATTR); + X(FUSE_FLUSH); + X(FUSE_INIT); + X(FUSE_OPENDIR); + X(FUSE_READDIR); + X(FUSE_RELEASEDIR); + X(FUSE_FSYNCDIR); + X(FUSE_GETLK); + X(FUSE_SETLK); + X(FUSE_SETLKW); + X(FUSE_ACCESS); + X(FUSE_CREATE); + X(FUSE_INTERRUPT); + X(FUSE_BMAP); + X(FUSE_DESTROY); + X(FUSE_IOCTL); + X(FUSE_POLL); + X(FUSE_NOTIFY_REPLY); + X(FUSE_BATCH_FORGET); + X(FUSE_FALLOCATE); + X(FUSE_READDIRPLUS); + X(FUSE_RENAME2); + X(FUSE_LSEEK); + X(FUSE_COPY_FILE_RANGE); + X(FUSE_SETUPMAPPING); + X(FUSE_REMOVEMAPPING); + X(FUSE_SYNCFS); + X(FUSE_TMPFILE); + X(FUSE_STATX); +#undef X + default: + return xasprintf ("FUSE_unknown_%u", op); + } + return xstrdup (result); +} + +static struct support_fuse * +support_fuse_open (void) +{ + struct support_fuse *result = xmalloc (sizeof (*result)); + result->mountpoint = support_fuse_mkdir (support_fuse_mountpoints); + result->inh = NULL; + result->prepared_pointer = NULL; + result->prepared_size = 0; + result->readdir_buffer = NULL; + result->readdir_buffer_size = 0; + result->uid = getuid (); + result->gid = getgid (); + result->fd = open ("/dev/fuse", O_RDWR, 0); + if (result->fd < 0) + { + if (errno == ENOENT || errno == ENODEV || errno == EPERM + || errno == EACCES) + FAIL_UNSUPPORTED ("cannot open /dev/fuse: %m"); + else + FAIL_EXIT1 ("cannot open /dev/fuse: %m"); + } + result->connection = -1; + result->filter_forget = true; + result->disconnected = false; + support_fuse_allocate (result, FUSE_MIN_READ_BUFFER); + return result; +} + +static void +support_fuse_prepare_1 (struct support_fuse *f, size_t size) +{ + TEST_VERIFY (f->prepared_pointer == NULL); + f->prepared_size = size; + memset (&f->prepared, 0, size); + f->prepared_pointer = &f->prepared; +} + +struct fuse_attr_out * +support_fuse_prepare_attr (struct support_fuse *f) +{ + support_fuse_prepare_1 (f, sizeof (f->prepared.attr)); + f->prepared.attr.attr.uid = f->uid; + f->prepared.attr.attr.gid = f->gid; + f->prepared.attr.attr.ino = f->inh->nodeid; + return &f->prepared.attr; +} + +void +support_fuse_prepare_create (struct support_fuse *f, + uint64_t nodeid, + struct fuse_entry_out **out_entry, + struct fuse_open_out **out_open) +{ + support_fuse_prepare_1 (f, sizeof (f->prepared.create)); + f->prepared.create.entry.nodeid = nodeid; + f->prepared.create.entry.attr.uid = f->uid; + f->prepared.create.entry.attr.gid = f->gid; + f->prepared.create.entry.attr.ino = nodeid; + *out_entry = &f->prepared.create.entry; + *out_open = &f->prepared.create.open; +} + +struct fuse_entry_out * +support_fuse_prepare_entry (struct support_fuse *f, uint64_t nodeid) +{ + support_fuse_prepare_1 (f, sizeof (f->prepared.entry)); + f->prepared.entry.nodeid = nodeid; + f->prepared.entry.attr.uid = f->uid; + f->prepared.entry.attr.gid = f->gid; + f->prepared.entry.attr.ino = nodeid; + return &f->prepared.entry; +} + +struct support_fuse_dirstream * +support_fuse_prepare_readdir (struct support_fuse *f) +{ + support_fuse_prepare_1 (f, 0); + struct fuse_read_in *p = support_fuse_cast (READ, f->inh); + if (p->size > f->readdir_buffer_size) + { + free (f->readdir_buffer); + f->readdir_buffer = xmalloc (p->size); + f->readdir_buffer_size = p->size; + } + f->prepared_pointer = f->readdir_buffer; + return (struct support_fuse_dirstream *) f; +} + +struct fuse_in_header * +support_fuse_next (struct support_fuse *f) +{ + TEST_VERIFY (f->inh == NULL); + while (true) + { + if (f->buffer_next < f->buffer_limit) + { + f->inh = f->buffer_next; + f->buffer_next = (void *) f->buffer_next + f->inh->len; + /* Suppress FUSE_FORGET responses if requested. */ + if (f->filter_forget && f->inh->opcode == FUSE_FORGET) + { + f->inh = NULL; + continue; + } + return f->inh; + } + ssize_t ret = read (f->fd, f->buffer_start, + f->buffer_end - f->buffer_start); + if (ret == 0) + FAIL_EXIT (1, "unexpected EOF on FUSE device"); + if (ret < 0 && errno == EINVAL) + { + /* Increase buffer size. */ + size_t new_size = 2 * (size_t) (f->buffer_end - f->buffer_start); + free (f->buffer_start); + support_fuse_allocate (f, new_size); + continue; + } + if (ret < 0) + { + if (f->disconnected) + /* Unmount detected. */ + return NULL; + FAIL_EXIT1 ("read error on FUSE device: %m"); + } + /* Read was successful, make [next, limit) the active buffer area. */ + f->buffer_next = f->buffer_start; + f->buffer_limit = (void *) f->buffer_start + ret; + } +} + +void +support_fuse_reply (struct support_fuse *f, + const void *payload, size_t payload_size) +{ + TEST_VERIFY_EXIT (f->inh != NULL); + TEST_VERIFY (f->prepared_pointer == NULL); + struct fuse_out_header outh = + { + .len = sizeof (outh) + payload_size, + .unique = f->inh->unique, + }; + struct iovec iov[] = + { + { &outh, sizeof (outh) }, + { (void *) payload, payload_size }, + }; + ssize_t ret = writev (f->fd, iov, array_length (iov)); + if (ret < 0) + { + if (!f->disconnected) + /* Some kernels produce write errors upon disconnect. */ + FAIL_EXIT1 ("FUSE write failed for %s response" + " (%zu bytes payload): %m", + support_fuse_opcode (f->inh->opcode), payload_size); + } + else if (ret != sizeof (outh) + payload_size) + FAIL_EXIT1 ("FUSE write short for %s response (%zu bytes payload):" + " %zd bytes", + support_fuse_opcode (f->inh->opcode), payload_size, ret); + f->inh = NULL; +} + +void +support_fuse_reply_empty (struct support_fuse *f) +{ + support_fuse_reply_error_1 (f, 0); +} + +static void +support_fuse_reply_error_1 (struct support_fuse *f, uint32_t error) +{ + TEST_VERIFY_EXIT (f->inh != NULL); + struct fuse_out_header outh = + { + .len = sizeof (outh), + .error = -error, + .unique = f->inh->unique, + }; + ssize_t ret = write (f->fd, &outh, sizeof (outh)); + if (ret < 0) + { + /* Some kernels produce write errors upon disconnect. */ + if (!f->disconnected) + FAIL_EXIT1 ("FUSE write failed for %s error response: %m", + support_fuse_opcode (f->inh->opcode)); + } + else if (ret != sizeof (outh)) + FAIL_EXIT1 ("FUSE write short for %s error response: %zd bytes", + support_fuse_opcode (f->inh->opcode), ret); + f->inh = NULL; + f->prepared_pointer = NULL; + f->prepared_size = 0; +} + +void +support_fuse_reply_error (struct support_fuse *f, uint32_t error) +{ + TEST_VERIFY (error > 0); + support_fuse_reply_error_1 (f, error); +} + +void +support_fuse_reply_prepared (struct support_fuse *f) +{ + TEST_VERIFY_EXIT (f->prepared_pointer != NULL); + /* Re-use the non-prepared reply function. It requires + f->prepared_* to be non-null, so reset the fields before the call. */ + void *prepared_pointer = f->prepared_pointer; + size_t prepared_size = f->prepared_size; + f->prepared_pointer = NULL; + f->prepared_size = 0; + support_fuse_reply (f, prepared_pointer, prepared_size); +} + +static void * +support_fuse_thread_wrapper (void *closure) +{ + struct fuse_thread_wrapper_args args + = *(struct fuse_thread_wrapper_args *) closure; + + /* Handle the initial stat call. */ + struct fuse_in_header *inh = support_fuse_next (args.f); + if (inh == NULL || !support_fuse_handle_mountpoint (args.f)) + { + support_fuse_reply_error (args.f, EIO); + return NULL; + } + + args.callback (args.f, args.closure); + return NULL; +} + +void +support_fuse_unmount (struct support_fuse *f) +{ + /* Signal the unmount to the handler thread. Some kernels report + not just ENODEV errors on read. */ + f->disconnected = true; + + { + char *path = xasprintf ("/sys/fs/fuse/connections/%d/abort", + f->connection); + /* Some kernels do not support these files under /sys. */ + int fd = open (path, O_RDWR | O_TRUNC); + if (fd >= 0) + { + TEST_COMPARE (write (fd, "1", 1), 1); + xclose (fd); + } + free (path); + } + if (umount (f->mountpoint) != 0) + FAIL ("FUSE: umount (\"%s\"): %m", f->mountpoint); + xpthread_join (f->handler); + if (rmdir (f->mountpoint) != 0) + FAIL ("FUSE: rmdir (\"%s\"): %m", f->mountpoint); + xclose (f->fd); + free (f->buffer_start); + free (f->mountpoint); + free (f->readdir_buffer); + free (f); +} + +static void __attribute__ ((constructor)) +init (void) +{ + /* The test_dir test driver variable is not yet set at this point. */ + const char *tmpdir = getenv ("TMPDIR"); + if (tmpdir == NULL || tmpdir[0] == '\0') + tmpdir = "/tmp"; + + char *prefix = xasprintf ("%s/glibc-tst-fuse.", tmpdir); + support_fuse_mountpoints = support_fuse_mkdir (prefix); + free (prefix); + support_fuse_cleanup_pid = getpid (); +} + +static void __attribute__ ((destructor)) +fini (void) +{ + if (support_fuse_cleanup_pid != getpid () + || support_fuse_mountpoints == NULL) + return; + DIR *dir = xopendir (support_fuse_mountpoints); + while (true) + { + struct dirent64 *e = readdir64 (dir); + if (e == NULL) + /* Ignore errors. */ + break; + if (*e->d_name == '.') + /* Skip "." and "..". No hidden files expected. */ + continue; + if (unlinkat (dirfd (dir), e->d_name, AT_REMOVEDIR) != 0) + break; + rewinddir (dir); + } + xclosedir (dir); + rmdir (support_fuse_mountpoints); + free (support_fuse_mountpoints); + support_fuse_mountpoints = NULL; +} diff --git a/support/support-xstat-time64.c b/support/support_open_and_compare_file_bytes.c index 451948734a..f804ed8e46 100644 --- a/support/support-xstat-time64.c +++ b/support/support_open_and_compare_file_bytes.c @@ -1,5 +1,5 @@ -/* 64-bit time_t stat with error checking. - Copyright (C) 2021-2024 Free Software Foundation, Inc. +/* Compare bytes from a file. + Copyright (C) 2024 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or @@ -16,17 +16,18 @@ License along with the GNU C Library; if not, see <https://www.gnu.org/licenses/>. */ -/* NB: Non-standard file name to avoid sysdeps override for xstat. */ +#include <support/file_contents.h> +#include <support/xstdio.h> -#include <support/check.h> -#include <support/xunistd.h> -#include <sys/stat.h> +/* Check that a not-currently-open file has exactly the given + bytes. */ -#if __TIMESIZE != 64 -void -xstat_time64 (const char *path, struct __stat64_t64 *result) +int +support_open_and_compare_file_bytes (const char *file, const char *contents, + size_t length) { - if (__stat64_time64 (path, result) != 0) - FAIL_EXIT1 ("__stat64_time64 (\"%s\"): %m", path); + FILE *fp = xfopen (file, "r"); + int ret = support_compare_file_bytes (fp, contents, length); + xfclose (fp); + return ret; } -#endif diff --git a/support/support_open_and_compare_file_string.c b/support/support_open_and_compare_file_string.c new file mode 100644 index 0000000000..2b596d4c88 --- /dev/null +++ b/support/support_open_and_compare_file_string.c @@ -0,0 +1,32 @@ +/* Compare string from a file. + Copyright (C) 2024 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <https://www.gnu.org/licenses/>. */ + +#include <string.h> + +#include <support/file_contents.h> +#include <support/xstdio.h> + +/* Check that a not-currently-open file has exactly the given string + as contents, starting at the current offset. */ + +int +support_open_and_compare_file_string (const char *file, const char *contents) +{ + return support_open_and_compare_file_bytes (file, contents, + strlen (contents)); +} diff --git a/support/support_process_state.c b/support/support_process_state.c index 062335234f..ae8e0a531c 100644 --- a/support/support_process_state.c +++ b/support/support_process_state.c @@ -27,7 +27,7 @@ #include <support/xstdio.h> #include <support/check.h> -void +enum support_process_state support_process_state_wait (pid_t pid, enum support_process_state state) { #ifdef __linux__ @@ -75,7 +75,7 @@ support_process_state_wait (pid_t pid, enum support_process_state state) { free (line); xfclose (fstatus); - return; + return process_states[i].s; } rewind (fstatus); @@ -90,4 +90,6 @@ support_process_state_wait (pid_t pid, enum support_process_state state) /* Fallback to nanosleep if an invalid state is found. */ #endif nanosleep (&(struct timespec) { 1, 0 }, NULL); + + return support_process_state_invalid; } diff --git a/support/support_readdir.c b/support/support_readdir.c new file mode 100644 index 0000000000..10d808416f --- /dev/null +++ b/support/support_readdir.c @@ -0,0 +1,318 @@ +/* Type-generic wrapper for readdir functions. + Copyright (C) 2024 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <https://www.gnu.org/licenses/>. */ + +#include <support/readdir.h> + +#include <dlfcn.h> +#include <stddef.h> +#include <stdlib.h> +#include <support/check.h> +#include <support/support.h> +#include <support/xdirent.h> + +/* Copied from <olddirent.h>. */ +struct __old_dirent64 + { + __ino_t d_ino; + __off64_t d_off; + unsigned short int d_reclen; + unsigned char d_type; + char d_name[256]; + }; + +static struct __old_dirent64 *(*readdir64_compat) (DIR *); +static int (*readdir64_r_compat) (DIR *, struct __old_dirent64 *, + struct __old_dirent64 **); + +static void __attribute__ ((constructor)) +init (void) +{ + /* These compat symbols exists on alpha, i386, m67k , powerpc, s390, + sparc. at the same GLIBC_2.1 version. */ + readdir64_compat = dlvsym (RTLD_DEFAULT, "readdir64", "GLIBC_2.1"); + readdir64_r_compat = dlvsym (RTLD_DEFAULT, "readdir64_r", "GLIBC_2.1"); +} + +enum support_readdir_op +support_readdir_op_last (void) +{ + if (readdir64_r_compat != NULL) + { + TEST_VERIFY (readdir64_compat != NULL); + return SUPPORT_READDIR64_R_COMPAT; + } + else + return SUPPORT_READDIR64_R; +} + +const char * +support_readdir_function (enum support_readdir_op op) +{ + switch (op) + { + case SUPPORT_READDIR: + return "readdir"; + case SUPPORT_READDIR64: + return "readdir64"; + case SUPPORT_READDIR_R: + return "readdir_r"; + case SUPPORT_READDIR64_R: + return "readdir64_r"; + case SUPPORT_READDIR64_COMPAT: + return "readdir64@GBLIC_2.1"; + case SUPPORT_READDIR64_R_COMPAT: + return "readdir64_r@GBLIC_2.1"; + } + FAIL_EXIT1 ("invalid support_readdir_op constant: %d", op); +} + +unsigned int +support_readdir_inode_width (enum support_readdir_op op) +{ + switch (op) + { + case SUPPORT_READDIR: + case SUPPORT_READDIR_R: + return sizeof ((struct dirent) { 0, }.d_ino) * 8; + case SUPPORT_READDIR64: + case SUPPORT_READDIR64_R: + return sizeof ((struct dirent64) { 0, }.d_ino) * 8; + case SUPPORT_READDIR64_COMPAT: + case SUPPORT_READDIR64_R_COMPAT: + return sizeof ((struct __old_dirent64) { 0, }.d_ino) * 8; + } + FAIL_EXIT1 ("invalid support_readdir_op constant: %d", op); +} + +unsigned int +support_readdir_offset_width (enum support_readdir_op op) +{ +#ifdef _DIRENT_HAVE_D_OFF + switch (op) + { + case SUPPORT_READDIR: + case SUPPORT_READDIR_R: + return sizeof ((struct dirent) { 0, }.d_off) * 8; + case SUPPORT_READDIR64: + case SUPPORT_READDIR64_R: + return sizeof ((struct dirent64) { 0, }.d_off) * 8; + case SUPPORT_READDIR64_COMPAT: + case SUPPORT_READDIR64_R_COMPAT: + return sizeof ((struct __old_dirent64) { 0, }.d_off) * 8; + } +#else + switch (op) + { + case SUPPORT_READDIR: + case SUPPORT_READDIR_R: + case SUPPORT_READDIR64: + case SUPPORT_READDIR64_R: + case SUPPORT_READDIR64_COMPAT: + case SUPPORT_READDIR64_R_COMPAT: + return 0; + } +#endif + FAIL_EXIT1 ("invalid support_readdir_op constant: %d", op); +} + +bool +support_readdir_r_variant (enum support_readdir_op op) +{ + switch (op) + { + case SUPPORT_READDIR: + case SUPPORT_READDIR64: + case SUPPORT_READDIR64_COMPAT: + return false; + case SUPPORT_READDIR_R: + case SUPPORT_READDIR64_R: + case SUPPORT_READDIR64_R_COMPAT: + return true; + } + FAIL_EXIT1 ("invalid support_readdir_op constant: %d", op); +} + +static bool +copy_dirent (struct support_dirent *dst, struct dirent *src) +{ + if (src == NULL) + return false; + dst->d_ino = src->d_ino; +#ifdef _DIRENT_HAVE_D_OFF + dst->d_off = src->d_off; +#else + dst->d_off = 0; +#endif + dst->d_type = src->d_type; + dst->d_name = xstrdup (src->d_name); + return true; +} + +static bool +copy_dirent64 (struct support_dirent *dst, struct dirent64 *src) +{ + if (src == NULL) + return false; + dst->d_ino = src->d_ino; +#ifdef _DIRENT_HAVE_D_OFF + dst->d_off = src->d_off; +#else + dst->d_off = 0; +#endif + dst->d_type = src->d_type; + dst->d_name = xstrdup (src->d_name); + return true; +} + +static bool +copy_old_dirent64 (struct support_dirent *dst, struct __old_dirent64 *src) +{ + if (src == NULL) + return false; + dst->d_ino = src->d_ino; +#ifdef _DIRENT_HAVE_D_OFF + dst->d_off = src->d_off; +#else + dst->d_off = 0; +#endif + dst->d_type = src->d_type; + dst->d_name = xstrdup (src->d_name); + return true; +} + +bool +support_readdir (DIR *stream, enum support_readdir_op op, + struct support_dirent *e) +{ + free (e->d_name); + e->d_name = NULL; + switch (op) + { + case SUPPORT_READDIR: + return copy_dirent (e, xreaddir (stream)); + case SUPPORT_READDIR64: + return copy_dirent64 (e, xreaddir64 (stream)); + + /* The functions readdir_r, readdir64_r were deprecated in glibc 2.24. */ + DIAG_PUSH_NEEDS_COMMENT; + DIAG_IGNORE_NEEDS_COMMENT (4.9, "-Wdeprecated-declarations"); + + case SUPPORT_READDIR_R: + { + struct dirent buf; + if (!xreaddir_r (stream, &buf)) + return false; + return copy_dirent (e, &buf); + } + case SUPPORT_READDIR64_R: + { + struct dirent64 buf; + if (!xreaddir64_r (stream, &buf)) + return false; + return copy_dirent64 (e, &buf); + } + + DIAG_POP_NEEDS_COMMENT; + + case SUPPORT_READDIR64_COMPAT: + if (readdir64_compat == NULL) + FAIL_EXIT1 ("readdir64 compat function not implemented"); + return copy_old_dirent64 (e, readdir64_compat (stream)); + + case SUPPORT_READDIR64_R_COMPAT: + { + if (readdir64_r_compat == NULL) + FAIL_EXIT1 ("readdir64_r compat function not implemented"); + struct __old_dirent64 buf; + struct __old_dirent64 *e1; + int ret = readdir64_r_compat (stream, &buf, &e1); + if (ret != 0) + { + errno = ret; + FAIL ("readdir64_r@GLIBC_2.1: %m"); + return false; + } + if (e1 == NULL) + return false; + return copy_old_dirent64 (e, e1); + } + } + FAIL_EXIT1 ("support_readdir: invalid op argument %d", (int) op); +} + +void +support_readdir_expect_error (DIR *stream, enum support_readdir_op op, + int expected) +{ + switch (op) + { + case SUPPORT_READDIR: + errno = 0; + TEST_VERIFY (readdir (stream) == NULL); + TEST_COMPARE (errno, expected); + return; + case SUPPORT_READDIR64: + errno = 0; + TEST_VERIFY (readdir64 (stream) == NULL); + TEST_COMPARE (errno, expected); + return; + + /* The functions readdir_r, readdir64_r were deprecated in glibc 2.24. */ + DIAG_PUSH_NEEDS_COMMENT; + DIAG_IGNORE_NEEDS_COMMENT (4.9, "-Wdeprecated-declarations"); + + case SUPPORT_READDIR_R: + { + struct dirent buf; + struct dirent *e; + errno = readdir_r (stream, &buf, &e); + TEST_COMPARE (errno, expected);; + } + return; + case SUPPORT_READDIR64_R: + { + struct dirent64 buf; + struct dirent64 *e; + errno = readdir64_r (stream, &buf, &e); + TEST_COMPARE (errno, expected);; + } + return; + + DIAG_POP_NEEDS_COMMENT; + + case SUPPORT_READDIR64_COMPAT: + if (readdir64_compat == NULL) + FAIL_EXIT1 ("readdir64_r compat function not implemented"); + errno = 0; + TEST_VERIFY (readdir64_compat (stream) == NULL); + TEST_COMPARE (errno, expected); + return; + case SUPPORT_READDIR64_R_COMPAT: + { + if (readdir64_r_compat == NULL) + FAIL_EXIT1 ("readdir64_r compat function not implemented"); + struct __old_dirent64 buf; + struct __old_dirent64 *e; + errno = readdir64_r_compat (stream, &buf, &e); + TEST_COMPARE (errno, expected); + } + return; + } + FAIL_EXIT1 ("support_readdir_expect_error: invalid op argument %d", + (int) op); +} diff --git a/support/support_readdir_check.c b/support/support_readdir_check.c new file mode 100644 index 0000000000..5687004276 --- /dev/null +++ b/support/support_readdir_check.c @@ -0,0 +1,30 @@ +/* Error-checking helper for xreaddir, xreaddir64. + Copyright (C) 2024 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <https://www.gnu.org/licenses/>. */ + +#include <support/xdirent.h> + +#include <support/check.h> + +void * +support_readdir_check (const char *name, void *result, int saved_errno) +{ + if (result == NULL && errno != 0) + FAIL_EXIT1 ("%s: %m", name); + errno = saved_errno; + return result; +} diff --git a/support/xlstat-time64.c b/support/support_readdir_r_check.c index 2bc3ca6593..6bbb0d0b32 100644 --- a/support/xlstat-time64.c +++ b/support/support_readdir_r_check.c @@ -1,5 +1,5 @@ -/* 64-bit time_t stat with error checking. - Copyright (C) 2021-2024 Free Software Foundation, Inc. +/* Error-checking helper for xreaddir_r, xreaddir64_r. + Copyright (C) 2024 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or @@ -16,17 +16,20 @@ License along with the GNU C Library; if not, see <https://www.gnu.org/licenses/>. */ -/* NB: Non-standard file name to avoid sysdeps override for xstat. */ +#include <support/xdirent.h> #include <support/check.h> -#include <support/xunistd.h> -#include <sys/stat.h> -#if __TIMESIZE != 64 -void -xlstat_time64 (const char *path, struct __stat64_t64 *result) +int +support_readdir_r_check (const char *name, int result, void *buf, void *ptr) { - if (__lstat64_time64 (path, result) != 0) - FAIL_EXIT1 ("__lstat64_time64 (\"%s\"): %m", path); + if (result != 0) + { + errno = result; + FAIL_EXIT1 ("%s: %m", name); + } + if (buf != ptr) + FAIL_EXIT1 ("%s: buffer pointer and returned pointer differ: %p != %p", + name, buf, ptr); + return result; } -#endif diff --git a/support/support_test_compare_failure.c b/support/support_test_compare_failure.c index ae73d200cd..dba79e413f 100644 --- a/support/support_test_compare_failure.c +++ b/support/support_test_compare_failure.c @@ -17,7 +17,9 @@ <https://www.gnu.org/licenses/>. */ #include <errno.h> +#include <limits.h> #include <stdio.h> +#include <string.h> #include <support/check.h> static void @@ -31,7 +33,14 @@ report (const char *which, const char *expr, long long value, int positive, printf ("%lld", value); unsigned long long mask = (~0ULL) >> (8 * (sizeof (unsigned long long) - size)); - printf (" (0x%llx); from: %s\n", (unsigned long long) value & mask, expr); + const char *errno_constant = NULL; + if (strcmp (expr, "errno") == 0 + && positive && (unsigned long long int) value <= INT_MAX) + errno_constant = strerrorname_np (value); + printf (" (0x%llx", (unsigned long long) value & mask); + if (errno_constant != NULL) + printf (", %s", errno_constant); + printf ("); from: %s\n", expr); } void diff --git a/support/test-driver.c b/support/test-driver.c index f4c3e4d666..04ceebc08f 100644 --- a/support/test-driver.c +++ b/support/test-driver.c @@ -155,6 +155,7 @@ main (int argc, char **argv) { CMDLINE_OPTIONS TEST_DEFAULT_OPTIONS + { 0, } }; test_config.options = &options; #endif diff --git a/support/timespec-add.c b/support/timespec-add.c index 55fd812f31..57b968c316 100644 --- a/support/timespec-add.c +++ b/support/timespec-add.c @@ -20,7 +20,6 @@ /* Return the sum of two timespec values A and B. On overflow, return an extremal value. This assumes 0 <= tv_nsec < TIMESPEC_HZ. */ -#include <config.h> #include "timespec.h" #include "intprops.h" diff --git a/support/timespec-sub.c b/support/timespec-sub.c index 7d89c1415a..2897343fce 100644 --- a/support/timespec-sub.c +++ b/support/timespec-sub.c @@ -21,7 +21,6 @@ overflow, return an extremal value. This assumes 0 <= tv_nsec < TIMESPEC_HZ. */ -#include <config.h> #include "timespec.h" #include "intprops.h" diff --git a/support/tst-support-process_state.c b/support/tst-support-process_state.c index d73269320f..4a88eae3a7 100644 --- a/support/tst-support-process_state.c +++ b/support/tst-support-process_state.c @@ -68,28 +68,39 @@ do_test (void) if (test_verbose) printf ("info: waiting pid %d, state_stopped/state_tracing_stop\n", (int) pid); - support_process_state_wait (pid, stop_state); + { + enum support_process_state state = + support_process_state_wait (pid, stop_state); + TEST_VERIFY (state == support_process_state_stopped + || state == support_process_state_tracing_stop); + } if (kill (pid, SIGCONT) != 0) FAIL_RET ("kill (%d, SIGCONT): %m\n", pid); if (test_verbose) printf ("info: waiting pid %d, state_sleeping\n", (int) pid); - support_process_state_wait (pid, support_process_state_sleeping); + TEST_COMPARE (support_process_state_wait (pid, + support_process_state_sleeping), + support_process_state_sleeping); if (kill (pid, SIGUSR1) != 0) FAIL_RET ("kill (%d, SIGUSR1): %m\n", pid); if (test_verbose) printf ("info: waiting pid %d, state_running\n", (int) pid); - support_process_state_wait (pid, support_process_state_running); + TEST_COMPARE (support_process_state_wait (pid, + support_process_state_running), + support_process_state_running); if (kill (pid, SIGKILL) != 0) FAIL_RET ("kill (%d, SIGKILL): %m\n", pid); if (test_verbose) printf ("info: waiting pid %d, state_zombie\n", (int) pid); - support_process_state_wait (pid, support_process_state_zombie); + TEST_COMPARE (support_process_state_wait (pid, + support_process_state_zombie), + support_process_state_zombie);; siginfo_t info; int r = waitid (P_PID, pid, &info, WEXITED); diff --git a/support/tst-support_fuse.c b/support/tst-support_fuse.c new file mode 100644 index 0000000000..9ee637cbab --- /dev/null +++ b/support/tst-support_fuse.c @@ -0,0 +1,349 @@ +/* Facilities for FUSE-backed file system tests. + Copyright (C) 2024 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <https://www.gnu.org/licenses/>. */ + +#include <support/fuse.h> + +#include <dirent.h> +#include <errno.h> +#include <fcntl.h> +#include <stdio.h> +#include <string.h> +#include <support/check.h> +#include <support/support.h> +#include <support/xdirent.h> +#include <support/xunistd.h> + +static void +fuse_thread (struct support_fuse *f, void *closure) +{ + /* Turn on returning FUSE_FORGET responses. */ + support_fuse_filter_forget (f, false); + + /* Inode and nodeid for "file" and "new". */ + enum { NODE_FILE = 2, NODE_NEW, NODE_SUBDIR, NODE_SYMLINK }; + struct fuse_in_header *inh; + while ((inh = support_fuse_next (f)) != NULL) + { + { + char *opcode = support_fuse_opcode (inh->opcode); + printf ("info: (T) event %s(%llu) len=%u nodeid=%llu\n", + opcode, (unsigned long long int) inh->unique, inh->len, + (unsigned long long int) inh->nodeid); + free (opcode); + } + + /* Handle mountpoint and basic directory operation for the root (1). */ + if (support_fuse_handle_mountpoint (f) + || (inh->nodeid == 1 && support_fuse_handle_directory (f))) + continue; + + switch (inh->opcode) + { + case FUSE_READDIR: + /* Implementation of getdents64. */ + if (inh->nodeid == 1) + { + struct support_fuse_dirstream *d + = support_fuse_prepare_readdir (f); + TEST_COMPARE (support_fuse_cast (READ, inh)->offset, 0); + TEST_VERIFY (support_fuse_dirstream_add (d, 1, 1, DT_DIR, ".")); + TEST_VERIFY (support_fuse_dirstream_add (d, 1, 2, DT_DIR, "..")); + TEST_VERIFY (support_fuse_dirstream_add (d, NODE_FILE, 3, DT_REG, + "file")); + support_fuse_reply_prepared (f); + } + else + support_fuse_reply_error (f, EIO); + break; + case FUSE_LOOKUP: + /* Part of the implementation of open. */ + { + char *name = support_fuse_cast (LOOKUP, inh); + printf (" name: %s\n", name); + if (inh->nodeid == 1 && strcmp (name, "file") == 0) + { + struct fuse_entry_out *out + = support_fuse_prepare_entry (f, NODE_FILE); + out->attr.mode = S_IFREG | 0600; + support_fuse_reply_prepared (f); + } + else if (inh->nodeid == 1 && strcmp (name, "symlink") == 0) + { + struct fuse_entry_out *out + = support_fuse_prepare_entry (f, NODE_SYMLINK); + out->attr.mode = S_IFLNK | 0777; + support_fuse_reply_prepared (f); + } + else + support_fuse_reply_error (f, ENOENT); + } + break; + case FUSE_OPEN: + /* Implementation of open. */ + { + struct fuse_open_in *p = support_fuse_cast (OPEN, inh); + if (inh->nodeid == NODE_FILE) + { + TEST_VERIFY (!(p->flags & O_EXCL)); + struct fuse_open_out out = { 0, }; + support_fuse_reply (f, &out, sizeof (out)); + } + else + support_fuse_reply_error (f, ENOENT); + } + break; + case FUSE_GETATTR: + /* Happens after open. */ + if (inh->nodeid == NODE_FILE) + { + struct fuse_attr_out *out = support_fuse_prepare_attr (f); + out->attr.mode = S_IFREG | 0600; + out->attr.size = strlen ("Hello, world!"); + support_fuse_reply_prepared (f); + } + else + support_fuse_reply_error (f, ENOENT); + break; + case FUSE_READ: + /* Implementation of read. */ + if (inh->nodeid == NODE_FILE) + { + struct fuse_read_in *p = support_fuse_cast (READ, inh); + TEST_COMPARE (p->offset, 0); + TEST_VERIFY (p->size >= strlen ("Hello, world!")); + support_fuse_reply (f, + "Hello, world!", strlen ("Hello, world!")); + } + else + support_fuse_reply_error (f, EIO); + break; + case FUSE_FLUSH: + /* Sent in response to close. */ + support_fuse_reply_empty (f); + break; + case FUSE_GETXATTR: + /* This happens as part of a open-for-write operation. + Signal no support for extended attributes. */ + support_fuse_reply_error (f, ENOSYS); + break; + case FUSE_SETATTR: + /* This happens as part of a open-for-write operation to + implement O_TRUNC. */ + if (inh->nodeid == NODE_FILE) + { + struct fuse_setattr_in *p = support_fuse_cast (SETATTR, inh); + /* FATTR_LOCKOWNER may also be set. */ + TEST_COMPARE ((p->valid) & ~ FATTR_LOCKOWNER, FATTR_SIZE); + TEST_COMPARE (p->size, 0); + struct fuse_attr_out *out = support_fuse_prepare_attr (f); + out->attr.mode = S_IFREG | 0600; + support_fuse_reply_prepared (f); + } + else + support_fuse_reply_error (f, EIO); + break; + case FUSE_WRITE: + /* Implementation of write. */ + if (inh->nodeid == NODE_FILE) + { + struct fuse_write_in *p = support_fuse_cast (WRITE, inh); + TEST_COMPARE (p->offset, 0); + /* Write payload follows after struct fuse_write_in. */ + TEST_COMPARE_BLOB (p + 1, p->size, + "Good day to you too.", + strlen ("Good day to you too.")); + struct fuse_write_out out = + { + .size = p->size, + }; + support_fuse_reply (f, &out, sizeof (out)); + } + else + support_fuse_reply_error (f, EIO); + break; + case FUSE_CREATE: + /* Implementation of O_CREAT. */ + if (inh->nodeid == 1) + { + char *name; + struct fuse_create_in *p + = support_fuse_cast_name (CREATE, inh, &name); + TEST_VERIFY (S_ISREG (p->mode)); + TEST_COMPARE (p->mode & 07777, 0600); + TEST_COMPARE_STRING (name, "new"); + struct fuse_entry_out *out_entry; + struct fuse_open_out *out_open; + support_fuse_prepare_create (f, NODE_NEW, &out_entry, &out_open); + out_entry->attr.mode = S_IFREG | 0600; + support_fuse_reply_prepared (f); + } + else + support_fuse_reply_error (f, EIO); + break; + case FUSE_MKDIR: + /* Implementation of mkdir. */ + { + if (inh->nodeid == 1) + { + char *name; + struct fuse_mkdir_in *p + = support_fuse_cast_name (MKDIR, inh, &name); + TEST_COMPARE (p->mode, 01234); + TEST_COMPARE_STRING (name, "subdir"); + struct fuse_entry_out *out + = support_fuse_prepare_entry (f, NODE_SUBDIR); + out->attr.mode = S_IFDIR | p->mode; + support_fuse_reply_prepared (f); + } + else + support_fuse_reply_error (f, EIO); + } + break; + case FUSE_READLINK: + /* Implementation of readlink. */ + TEST_COMPARE (inh->nodeid, NODE_SYMLINK); + if (inh->nodeid == NODE_SYMLINK) + support_fuse_reply (f, "target-of-symbolic-link", + strlen ("target-of-symbolic-link")); + else + support_fuse_reply_error (f, EINVAL); + break; + case FUSE_FORGET: + support_fuse_no_reply (f); + break; + default: + support_fuse_reply_error (f, EIO); + } + } +} + +static int +do_test (void) +{ + support_fuse_init (); + + struct support_fuse *f = support_fuse_mount (fuse_thread, NULL); + + printf ("info: Attributes of mountpoint/root directory %s\n", + support_fuse_mountpoint (f)); + { + struct statx st; + xstatx (AT_FDCWD, support_fuse_mountpoint (f), 0, STATX_BASIC_STATS, &st); + TEST_COMPARE (st.stx_uid, getuid ()); + TEST_COMPARE (st.stx_gid, getgid ()); + TEST_VERIFY (S_ISDIR (st.stx_mode)); + TEST_COMPARE (st.stx_mode & 07777, 0700); + } + + printf ("info: List directory %s\n", support_fuse_mountpoint (f)); + { + DIR *dir = xopendir (support_fuse_mountpoint (f)); + + struct dirent *e = xreaddir (dir); + TEST_COMPARE (e->d_ino, 1); +#ifdef _DIRENT_HAVE_D_OFF + TEST_COMPARE (e->d_off, 1); +#endif + TEST_COMPARE (e->d_type, DT_DIR); + TEST_COMPARE_STRING (e->d_name, "."); + + e = xreaddir (dir); + TEST_COMPARE (e->d_ino, 1); +#ifdef _DIRENT_HAVE_D_OFF + TEST_COMPARE (e->d_off, 2); +#endif + TEST_COMPARE (e->d_type, DT_DIR); + TEST_COMPARE_STRING (e->d_name, ".."); + + e = xreaddir (dir); + TEST_COMPARE (e->d_ino, 2); +#ifdef _DIRENT_HAVE_D_OFF + TEST_COMPARE (e->d_off, 3); +#endif + TEST_COMPARE (e->d_type, DT_REG); + TEST_COMPARE_STRING (e->d_name, "file"); + + TEST_COMPARE (closedir (dir), 0); + } + + char *file_path = xasprintf ("%s/file", support_fuse_mountpoint (f)); + + printf ("info: Attributes of file %s\n", file_path); + { + struct statx st; + xstatx (AT_FDCWD, file_path, 0, STATX_BASIC_STATS, &st); + TEST_COMPARE (st.stx_uid, getuid ()); + TEST_COMPARE (st.stx_gid, getgid ()); + TEST_VERIFY (S_ISREG (st.stx_mode)); + TEST_COMPARE (st.stx_mode & 07777, 0600); + TEST_COMPARE (st.stx_size, strlen ("Hello, world!")); + } + + printf ("info: Read from %s\n", file_path); + { + int fd = xopen (file_path, O_RDONLY, 0); + char buf[64]; + ssize_t len = read (fd, buf, sizeof (buf)); + if (len < 0) + FAIL_EXIT1 ("read: %m"); + TEST_COMPARE_BLOB (buf, len, "Hello, world!", strlen ("Hello, world!")); + xclose (fd); + } + + printf ("info: Write to %s\n", file_path); + { + int fd = xopen (file_path, O_WRONLY | O_TRUNC, 0); + xwrite (fd, "Good day to you too.", strlen ("Good day to you too.")); + xclose (fd); + } + + printf ("info: Attempt O_EXCL creation of existing %s\n", file_path); + /* O_EXCL creation shall fail. */ + errno = 0; + TEST_COMPARE (open64 (file_path, O_RDWR | O_EXCL | O_CREAT, 0600), -1); + TEST_COMPARE (errno, EEXIST); + + free (file_path); + + { + char *new_path = xasprintf ("%s/new", support_fuse_mountpoint (f)); + printf ("info: Test successful O_EXCL creation at %s\n", new_path); + int fd = xopen (new_path, O_RDWR | O_EXCL | O_CREAT, 0600); + xclose (fd); + free (new_path); + } + + { + char *subdir_path = xasprintf ("%s/subdir", support_fuse_mountpoint (f)); + xmkdir (subdir_path, 01234); + free (subdir_path); + } + + { + char *symlink_path = xasprintf ("%s/symlink", support_fuse_mountpoint (f)); + char *target = xreadlink (symlink_path); + TEST_COMPARE_STRING (target, "target-of-symbolic-link"); + free (target); + free (symlink_path); + } + + support_fuse_unmount (f); + return 0; +} + +#include <support/test-driver.c> diff --git a/support/tst-support_readdir.c b/support/tst-support_readdir.c new file mode 100644 index 0000000000..66be94fa80 --- /dev/null +++ b/support/tst-support_readdir.c @@ -0,0 +1,73 @@ +/* Test the support_readdir function. + Copyright (C) 2024 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <https://www.gnu.org/licenses/>. */ + +#include <support/readdir.h> + +#include <fcntl.h> +#include <stdlib.h> +#include <string.h> +#include <support/check.h> +#include <support/xdirent.h> +#include <support/xunistd.h> + +static int +do_test (void) +{ + DIR *reference_stream = xopendir ("."); + struct dirent64 *reference = xreaddir64 (reference_stream); + + for (enum support_readdir_op op = 0; op <= support_readdir_op_last (); ++op) + { + DIR *stream = xopendir ("."); + struct support_dirent e; + memset (&e, 0xcc, sizeof (e)); + e.d_name = NULL; + TEST_VERIFY (support_readdir (stream, op, &e)); + TEST_COMPARE (e.d_ino, reference->d_ino); +#ifdef _DIRENT_HAVE_D_OFF + TEST_VERIFY (support_readdir_offset_width (op) != 0); + TEST_COMPARE (e.d_off, reference->d_off); +#else + TEST_COMPARE (support_readdir_offset_width (op), 0); + TEST_COMPARE (e.d_off, 0); +#endif + TEST_COMPARE (e.d_type, reference->d_type); + TEST_COMPARE_STRING (e.d_name, reference->d_name); + free (e.d_name); + xclosedir (stream); + } + + xclosedir (reference_stream); + + /* Error injection test. */ + int devnull = xopen ("/dev/null", O_RDONLY, 0); + for (enum support_readdir_op op = 0; op <= support_readdir_op_last (); ++op) + { + DIR *stream = xopendir ("."); + /* A descriptor incompatible with readdir. */ + xdup2 (devnull, dirfd (stream)); + errno = -1; + support_readdir_expect_error (stream, op, ENOTDIR); + xclosedir (stream); + } + xclose (devnull); + + return 0; +} + +#include <support/test-driver.c> diff --git a/support/tst-xdirent.c b/support/tst-xdirent.c new file mode 100644 index 0000000000..642483165a --- /dev/null +++ b/support/tst-xdirent.c @@ -0,0 +1,76 @@ +/* Compile test for error-checking wrappers for <dirent.h> + Copyright (C) 2024 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <https://www.gnu.org/licenses/>. */ + +#include <support/xdirent.h> + +#include <libc-diag.h> +#include <support/check.h> +#include <unistd.h> + +static int +do_test (void) +{ + { + DIR *d = xopendir ("."); + struct dirent *e = xreaddir (d); + /* Assume that the "." special entry always comes first. */ + TEST_COMPARE_STRING (e->d_name, "."); + while (xreaddir (d) != NULL) + ; + xclosedir (d); + } + + { + DIR *d = xopendir ("."); + struct dirent64 *e = xreaddir64 (d); + TEST_COMPARE_STRING (e->d_name, "."); + while (xreaddir64 (d) != NULL) + ; + xclosedir (d); + } + + /* The functions readdir_r, readdir64_r were deprecated in glibc 2.24. */ + DIAG_PUSH_NEEDS_COMMENT; + DIAG_IGNORE_NEEDS_COMMENT (4.9, "-Wdeprecated-declarations"); + + { + DIR *d = xopendir ("."); + struct dirent buf = { 0, }; + TEST_VERIFY (xreaddir_r (d, &buf)); + TEST_COMPARE_STRING (buf.d_name, "."); + while (xreaddir_r (d, &buf)) + ; + xclosedir (d); + } + + { + DIR *d = xopendir ("."); + struct dirent64 buf = { 0, }; + TEST_VERIFY (xreaddir64_r (d, &buf)); + TEST_COMPARE_STRING (buf.d_name, "."); + while (xreaddir64_r (d, &buf)) + ; + xclosedir (d); + } + + DIAG_POP_NEEDS_COMMENT; + + return 0; +} + +#include <support/test-driver.c> diff --git a/support/support-xstat.c b/support/xclosedir.c index ce866f74d2..b490df5598 100644 --- a/support/support-xstat.c +++ b/support/xclosedir.c @@ -1,5 +1,5 @@ -/* stat64 with error checking. - Copyright (C) 2017-2024 Free Software Foundation, Inc. +/* Error-checking wrapper for closedir. + Copyright (C) 2024 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or @@ -16,15 +16,13 @@ License along with the GNU C Library; if not, see <https://www.gnu.org/licenses/>. */ -/* NB: Non-standard file name to avoid sysdeps override for xstat. */ +#include <support/xdirent.h> #include <support/check.h> -#include <support/xunistd.h> -#include <sys/stat.h> void -xstat (const char *path, struct stat64 *result) +xclosedir (DIR *dir) { - if (stat64 (path, result) != 0) - FAIL_EXIT1 ("stat64 (\"%s\"): %m", path); + if (closedir (dir) != 0) + FAIL_EXIT1 ("closedir: %m"); } diff --git a/support/xdirent.h b/support/xdirent.h new file mode 100644 index 0000000000..8465d70ec1 --- /dev/null +++ b/support/xdirent.h @@ -0,0 +1,86 @@ +/* Error-checking wrappers for <dirent.h> + Copyright (C) 2024 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <https://www.gnu.org/licenses/>. */ + +#ifndef SUPPORT_XDIRENT_H +#define SUPPORT_XDIRENT_H + +#include <dirent.h> +#include <errno.h> +#include <libc-diag.h> +#include <stdbool.h> +#include <stddef.h> + +__BEGIN_DECLS + +DIR *xopendir (const char *path); +DIR *xfdopendir (int fd); +void xclosedir (DIR *); + +void *support_readdir_check (const char *, void *, int); + +static __attribute__ ((unused)) struct dirent * +xreaddir (DIR *stream) +{ + int saved_errno = errno; + errno = 0; + struct dirent *result = readdir (stream); + return support_readdir_check ("readdir", result, saved_errno); +} + +static __attribute__ ((unused)) struct dirent64 * +xreaddir64 (DIR *stream) +{ + int saved_errno = errno; + errno = 0; + struct dirent64 *result = readdir64 (stream); + return support_readdir_check ("readdir64", result, saved_errno); +} + +/* The functions readdir_r, readdir64_r were deprecated in glibc 2.24. */ +DIAG_PUSH_NEEDS_COMMENT; +DIAG_IGNORE_NEEDS_COMMENT (4.9, "-Wdeprecated-declarations"); + +int support_readdir_r_check (const char *, int, void *, void *); + +static __attribute__ ((unused)) bool +xreaddir_r (DIR *stream, struct dirent *buf) +{ + struct dirent *ptr; + int ret = readdir_r (stream, buf, &ptr); + if (ret == 0 && ptr == NULL) + return false; + support_readdir_r_check ("readdir_r", ret, buf, ptr); + return true; +} + +static __attribute__ ((unused)) bool +xreaddir64_r (DIR *stream, struct dirent64 *buf) +{ + struct dirent64 *ptr; + int ret = readdir64_r (stream, buf, &ptr); + if (ret == 0 && ptr == NULL) + return false; + support_readdir_r_check ("readdir64_r", ret, buf, ptr); + return true; +} + +DIAG_POP_NEEDS_COMMENT; + +__END_DECLS + +#endif /* SUPPORT_XDIRENT_H */ diff --git a/support/xfdopendir.c b/support/xfdopendir.c new file mode 100644 index 0000000000..d881d28c73 --- /dev/null +++ b/support/xfdopendir.c @@ -0,0 +1,30 @@ +/* Error-checking wrapper for fdopendir. + Copyright (C) 2024 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <https://www.gnu.org/licenses/>. */ + +#include <support/xdirent.h> + +#include <support/check.h> + +DIR * +xfdopendir (int fd) +{ + DIR *result = fdopendir (fd); + if (result == NULL) + FAIL_EXIT1 ("fdopendir (%d): %m", fd); + return result; +} diff --git a/support/xopendir.c b/support/xopendir.c new file mode 100644 index 0000000000..e4aee07fee --- /dev/null +++ b/support/xopendir.c @@ -0,0 +1,30 @@ +/* Error-checking wrapper for opendir. + Copyright (C) 2024 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <https://www.gnu.org/licenses/>. */ + +#include <support/xdirent.h> + +#include <support/check.h> + +DIR * +xopendir (const char *path) +{ + DIR *result = opendir (path); + if (result == NULL) + FAIL_EXIT1 ("opendir (\"%s\"): %m", path); + return result; +} diff --git a/support/support-xfstat-time64.c b/support/xstatx.c index 589a69bb3e..621f2440f8 100644 --- a/support/support-xfstat-time64.c +++ b/support/xstatx.c @@ -1,5 +1,5 @@ -/* 64-bit time_t stat with error checking. - Copyright (C) 2021-2024 Free Software Foundation, Inc. +/* Error-checking wrapper for statx. + Copyright (C) 2024 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or @@ -16,17 +16,17 @@ License along with the GNU C Library; if not, see <https://www.gnu.org/licenses/>. */ -/* NB: Non-standard file name to avoid sysdeps override for xstat. */ +#include <support/xunistd.h> +#include <fcntl.h> #include <support/check.h> -#include <support/xunistd.h> #include <sys/stat.h> -#if __TIMESIZE != 64 void -xfstat_time64 (int fd, struct __stat64_t64 *result) +xstatx (int fd, const char *path, int flags, unsigned int mask, + struct statx *stx) { - if (__fstat64_time64 (fd, result) != 0) - FAIL_EXIT1 ("__fstat64_time64 (%d): %m", fd); + if (statx (fd, path, flags, mask, stx) != 0) + FAIL_EXIT1 ("statx (AT_FDCWD, \"%s\", 0x%x, 0x%x): %m", + path, (unsigned int) flags, mask); } -#endif diff --git a/support/xunistd.h b/support/xunistd.h index 13be9a46a3..204951bce7 100644 --- a/support/xunistd.h +++ b/support/xunistd.h @@ -29,28 +29,28 @@ __BEGIN_DECLS -struct stat64; +struct statx; pid_t xfork (void); pid_t xwaitpid (pid_t, int *status, int flags); void xpipe (int[2]); void xdup2 (int, int); int xopen (const char *path, int flags, mode_t); -#ifndef __USE_TIME64_REDIRECTS -# ifdef __USE_FILE_OFFSET64 -void xstat (const char *path, struct stat *); -void xlstat (const char *path, struct stat *); -void xfstat (int fd, struct stat *); -# else -void xstat (const char *path, struct stat64 *); -void xlstat (const char *path, struct stat64 *); -void xfstat (int fd, struct stat64 *); -# endif -#else -void __REDIRECT (xstat, (const char *path, struct stat *), xstat_time64); -void __REDIRECT (xlstat, (const char *path, struct stat *), xlstat_time64); -void __REDIRECT (xfstat, (int fd, struct stat *), xfstat_time64); -#endif +void support_check_stat_fd (const char *name, int fd, int result); +void support_check_stat_path (const char *name, const char *path, int result); +#define xstat(path, st) \ + (support_check_stat_path ("stat", (path), stat ((path), (st)))) +#define xfstat(fd, st) \ + (support_check_stat_fd ("fstat", (fd), fstat ((fd), (st)))) +#define xlstat(path, st) \ + (support_check_stat_path ("lstat", (path), lstat ((path), (st)))) +#define xstat64(path, st) \ + (support_check_stat_path ("stat64", (path), stat64 ((path), (st)))) +#define xfstat64(fd, st) \ + (support_check_stat_fd ("fstat64", (fd), fstat64 ((fd), (st)))) +#define xlstat64(path, st) \ + (support_check_stat_path ("lstat64", (path), lstat64 ((path), (st)))) +void xstatx (int, const char *, int, unsigned int, struct statx *); void xmkdir (const char *path, mode_t); void xchroot (const char *path); void xunlink (const char *path); |