diff options
45 files changed, 647 insertions, 279 deletions
diff --git a/ChangeLog b/ChangeLog index c1ff22b191..3dc59d4067 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,78 @@ +2018-06-12 Zack Weinberg <zackw@panix.com> + + * elf/dl-load.c, elf/dl-misc.c, elf/dl-profile.c, elf/rtld.c + * sysdeps/unix/sysv/linux/dl-sysdep.c + Include not-cancel.h. Use __close_nocancel instead of __close, + __open64_nocancel instead of __open, __read_nocancel instead of + __libc_read, and __write_nocancel instead of __libc_write. + + * csu/check_fds.c (check_one_fd) + * sysdeps/posix/fdopendir.c (__fdopendir) + * sysdeps/posix/opendir.c (__alloc_dir): Use __fcntl_nocancel + instead of __fcntl and/or __libc_fcntl. + + * sysdeps/unix/sysv/linux/pthread_setname.c (pthread_setname_np) + * sysdeps/unix/sysv/linux/pthread_getname.c (pthread_getname_np) + * sysdeps/unix/sysv/linux/i386/smp.h (is_smp_system): + Use __open64_nocancel instead of __open_nocancel. + + * sysdeps/unix/sysv/linux/not-cancel.h: Move all of the + hidden_proto declarations to the end and issue them if either + IS_IN(libc) or IS_IN(rtld). + * sysdeps/unix/sysv/linux/Makefile [subdir=io] (sysdep_routines): + Add close_nocancel, fcntl_nocancel, nanosleep_nocancel, + open_nocancel, open64_nocancel, openat_nocancel, pause_nocancel, + read_nocancel, waitpid_nocancel, write_nocancel. + + * io/Versions [GLIBC_PRIVATE]: Add __libc_fcntl, + __fcntl_nocancel, __open64_nocancel, __write_nocancel. + * posix/Versions: Add __nanosleep_nocancel, __pause_nocancel. + + * nptl/pt-fcntl.c: New file. + * nptl/Makefile (pthread-compat-wrappers): Remove fcntl. + (libpthread-routines): Add pt-fcntl. + * include/fcntl.h (__fcntl_nocancel_adjusted): New function. + (__libc_fcntl): Remove attribute_hidden. + * sysdeps/unix/sysv/linux/fcntl.c (__libc_fcntl): Call + __fcntl_nocancel_adjusted, not fcntl_common. + (__fcntl_nocancel): Move to new file fcntl_nocancel.c. + (fcntl_common): Rename to __fcntl_nocancel_adjusted; also move + to fcntl_nocancel.c. + * sysdeps/unix/sysv/linux/fcntl_nocancel.c: New file. + * sysdeps/unix/sysv/linux/powerpc/powerpc64/fcntl.c: Remove file. + * sysdeps/unix/sysv/linux/powerpc/powerpc64/sysdep.h: + Define FCNTL_ADJUST_CMD here, as a self-contained macro. + + * sysdeps/unix/sysv/linux/close.c: Move __close_nocancel to... + * sysdeps/unix/sysv/linux/close_nocancel.c: ...this new file. + * sysdeps/unix/sysv/linux/nanosleep.c: Move __nanosleep_nocancel to... + * sysdeps/unix/sysv/linux/nanosleep_nocancel.c: ...this new file. + * sysdeps/unix/sysv/linux/open.c: Move __open_nocancel to... + * sysdeps/unix/sysv/linux/open_nocancel.c: ...this new file. + * sysdeps/unix/sysv/linux/open64.c: Move __open64_nocancel to... + * sysdeps/unix/sysv/linux/open64_nocancel.c: ...this new file. + * sysdeps/unix/sysv/linux/openat.c: Move __openat_nocancel to... + * sysdeps/unix/sysv/linux/openat_nocancel.c: ...this new file. + * sysdeps/unix/sysv/linux/openat64.c: Move __openat64_nocancel to... + * sysdeps/unix/sysv/linux/openat64_nocancel.c: ...this new file. + * sysdeps/unix/sysv/linux/pause.c: Move __pause_nocancel to... + * sysdeps/unix/sysv/linux/pause_nocancel.c: ...this new file. + * sysdeps/unix/sysv/linux/read.c: Move __read_nocancel to... + * sysdeps/unix/sysv/linux/read_nocancel.c: ...this new file. + * sysdeps/unix/sysv/linux/waitpid.c: Move __waitpid_nocancel to... + * sysdeps/unix/sysv/linux/waitpid_nocancel.c: ...this new file. + * sysdeps/unix/sysv/linux/write.c: Move __write_nocancel to... + * sysdeps/unix/sysv/linux/write_nocancel.c: ...this new file. + + * sysdeps/unix/sysv/linux/nios2/Makefile: Don't override + libpthread-routines. + * sysdeps/unix/sysv/linux/nios2/pt-vfork.S: New file which + defines nothing. + + * sysdeps/mach/hurd/dl-sysdep.c: Define __read instead of + __libc_read, and __write instead of __libc_write. Define + __open64 in addition to __open. + 2018-06-12 H.J. Lu <hongjiu.lu@intel.com> [BZ #23250] diff --git a/csu/check_fds.c b/csu/check_fds.c index 2b181d44ab..605ee4f3f4 100644 --- a/csu/check_fds.c +++ b/csu/check_fds.c @@ -39,8 +39,7 @@ static void check_one_fd (int fd, int mode) { - /* Note that fcntl() with this parameter is not a cancellation point. */ - if (__builtin_expect (__libc_fcntl (fd, F_GETFD), 0) == -1 + if (__builtin_expect (__fcntl_nocancel (fd, F_GETFD), 0) == -1 && errno == EBADF) { const char *name; diff --git a/elf/dl-load.c b/elf/dl-load.c index 431236920f..c52d011efd 100644 --- a/elf/dl-load.c +++ b/elf/dl-load.c @@ -44,7 +44,7 @@ #include <dl-unmap-segments.h> #include <dl-machine-reject-phdr.h> #include <dl-sysdep-open.h> - +#include <not-cancel.h> #include <endian.h> #if BYTE_ORDER == BIG_ENDIAN @@ -776,7 +776,7 @@ lose (int code, int fd, const char *name, char *realname, struct link_map *l, { /* The file might already be closed. */ if (fd != -1) - (void) __close (fd); + (void) __close_nocancel (fd); if (l != NULL && l->l_origin != (char *) -1l) free ((char *) l->l_origin); free (l); @@ -835,7 +835,7 @@ _dl_map_object_from_fd (const char *name, const char *origname, int fd, { /* The object is already loaded. Just bump its reference count and return it. */ - __close (fd); + __close_nocancel (fd); /* If the name is not in the list of names for this object add it. */ @@ -863,7 +863,7 @@ _dl_map_object_from_fd (const char *name, const char *origname, int fd, /* No need to bump the refcount of the real object, ld.so will never be unloaded. */ - __close (fd); + __close_nocancel (fd); /* Add the map for the mirrored object to the object list. */ _dl_add_to_namespace_list (l, nsid); @@ -877,7 +877,7 @@ _dl_map_object_from_fd (const char *name, const char *origname, int fd, /* We are not supposed to load the object unless it is already loaded. So return now. */ free (realname); - __close (fd); + __close_nocancel (fd); return NULL; } @@ -896,7 +896,7 @@ _dl_map_object_from_fd (const char *name, const char *origname, int fd, if (_dl_zerofd == -1) { free (realname); - __close (fd); + __close_nocancel (fd); _dl_signal_error (errno, NULL, NULL, N_("cannot open zero fill device")); } @@ -962,7 +962,7 @@ _dl_map_object_from_fd (const char *name, const char *origname, int fd, { phdr = alloca (maplength); __lseek (fd, header->e_phoff, SEEK_SET); - if ((size_t) __libc_read (fd, (void *) phdr, maplength) != maplength) + if ((size_t) __read_nocancel (fd, (void *) phdr, maplength) != maplength) { errstring = N_("cannot read file data"); goto call_lose_errno; @@ -1232,7 +1232,7 @@ cannot enable executable stack as shared object requires"); l->l_tls_initimage = (char *) l->l_tls_initimage + l->l_addr; /* We are done mapping in the file. We no longer need the descriptor. */ - if (__glibc_unlikely (__close (fd) != 0)) + if (__glibc_unlikely (__close_nocancel (fd) != 0)) { errstring = N_("cannot close file descriptor"); goto call_lose_errno; @@ -1447,7 +1447,7 @@ open_verify (const char *name, int fd, { /* An audit library changed what we're supposed to open, so FD no longer matches it. */ - __close (fd); + __close_nocancel (fd); fd = -1; } } @@ -1455,7 +1455,7 @@ open_verify (const char *name, int fd, if (fd == -1) /* Open the file. We always open files read-only. */ - fd = __open (name, O_RDONLY | O_CLOEXEC); + fd = __open64_nocancel (name, O_RDONLY | O_CLOEXEC); if (fd != -1) { @@ -1474,8 +1474,8 @@ open_verify (const char *name, int fd, /* Read in the header. */ do { - ssize_t retlen = __libc_read (fd, fbp->buf + fbp->len, - sizeof (fbp->buf) - fbp->len); + ssize_t retlen = __read_nocancel (fd, fbp->buf + fbp->len, + sizeof (fbp->buf) - fbp->len); if (retlen <= 0) break; fbp->len += retlen; @@ -1598,7 +1598,8 @@ open_verify (const char *name, int fd, { phdr = alloca (maplength); __lseek (fd, ehdr->e_phoff, SEEK_SET); - if ((size_t) __libc_read (fd, (void *) phdr, maplength) != maplength) + if ((size_t) __read_nocancel (fd, (void *) phdr, maplength) + != maplength) { read_error: errval = errno; @@ -1648,7 +1649,7 @@ open_verify (const char *name, int fd, abi_note = abi_note_malloced; } __lseek (fd, ph->p_offset, SEEK_SET); - if (__libc_read (fd, (void *) abi_note, size) != size) + if (__read_nocancel (fd, (void *) abi_note, size) != size) { free (abi_note_malloced); goto read_error; @@ -1680,7 +1681,7 @@ open_verify (const char *name, int fd, || (GLRO(dl_osversion) && GLRO(dl_osversion) < osversion)) { close_and_out: - __close (fd); + __close_nocancel (fd); __set_errno (ENOENT); fd = -1; } @@ -1797,7 +1798,7 @@ open_path (const char *name, size_t namelen, int mode, /* The shared object cannot be tested for being SUID or this bit is not set. In this case we must not use this object. */ - __close (fd); + __close_nocancel (fd); fd = -1; /* We simply ignore the file, signal this by setting the error value which would have been set by `open'. */ @@ -1818,7 +1819,7 @@ open_path (const char *name, size_t namelen, int mode, { /* No memory for the name, we certainly won't be able to load and link it. */ - __close (fd); + __close_nocancel (fd); return -1; } } diff --git a/elf/dl-misc.c b/elf/dl-misc.c index b7174994cd..2eb81eeb02 100644 --- a/elf/dl-misc.c +++ b/elf/dl-misc.c @@ -33,7 +33,7 @@ #include <sysdep.h> #include <_itoa.h> #include <dl-writev.h> - +#include <not-cancel.h> /* Read the whole contents of FILE into new mmap'd space with given protections. *SIZEP gets the size of the file. On error MAP_FAILED @@ -44,7 +44,7 @@ _dl_sysdep_read_whole_file (const char *file, size_t *sizep, int prot) { void *result = MAP_FAILED; struct stat64 st; - int fd = __open (file, O_RDONLY | O_CLOEXEC); + int fd = __open64_nocancel (file, O_RDONLY | O_CLOEXEC); if (fd >= 0) { if (__fxstat64 (_STAT_VER, fd, &st) >= 0) @@ -65,7 +65,7 @@ _dl_sysdep_read_whole_file (const char *file, size_t *sizep, int prot) #endif , fd, 0); } - __close (fd); + __close_nocancel (fd); } return result; } diff --git a/elf/dl-profile.c b/elf/dl-profile.c index 7f15352123..bac3718c11 100644 --- a/elf/dl-profile.c +++ b/elf/dl-profile.c @@ -35,6 +35,7 @@ #include <sys/param.h> #include <sys/stat.h> #include <atomic.h> +#include <not-cancel.h> /* The LD_PROFILE feature has to be implemented different to the normal profiling using the gmon/ functions. The problem is that an @@ -324,7 +325,7 @@ _dl_start_profile (void) *cp++ = '/'; __stpcpy (__stpcpy (cp, GLRO(dl_profile)), ".profile"); - fd = __open (filename, O_RDWR | O_CREAT | O_NOFOLLOW, DEFFILEMODE); + fd = __open64_nocancel (filename, O_RDWR|O_CREAT|O_NOFOLLOW, DEFFILEMODE); if (fd == -1) { char buf[400]; @@ -335,7 +336,7 @@ _dl_start_profile (void) print_error: errnum = errno; if (fd != -1) - __close (fd); + __close_nocancel (fd); _dl_error_printf (errstr, filename, __strerror_r (errnum, buf, sizeof buf)); return; @@ -364,15 +365,14 @@ _dl_start_profile (void) goto print_error; } - if (TEMP_FAILURE_RETRY (__libc_write (fd, buf, (expected_size - & (GLRO(dl_pagesize) - - 1)))) + if (TEMP_FAILURE_RETRY + (__write_nocancel (fd, buf, (expected_size & (GLRO(dl_pagesize) - 1)))) < 0) goto cannot_create; } else if (st.st_size != expected_size) { - __close (fd); + __close_nocancel (fd); wrong_format: if (addr != NULL) @@ -392,7 +392,7 @@ _dl_start_profile (void) } /* We don't need the file descriptor anymore. */ - __close (fd); + __close_nocancel (fd); /* Pointer to data after the header. */ hist = (char *) (addr + 1); diff --git a/elf/rtld.c b/elf/rtld.c index e7681ebb1f..8c732adb68 100644 --- a/elf/rtld.c +++ b/elf/rtld.c @@ -41,6 +41,7 @@ #include <tls.h> #include <stap-probe.h> #include <stackinfo.h> +#include <not-cancel.h> #include <assert.h> @@ -2673,7 +2674,7 @@ process_envvars (enum mode *modep) *--startp = '.'; startp = memcpy (startp - name_len, debug_output, name_len); - GLRO(dl_debug_fd) = __open (startp, flags, DEFFILEMODE); + GLRO(dl_debug_fd) = __open64_nocancel (startp, flags, DEFFILEMODE); if (GLRO(dl_debug_fd) == -1) /* We use standard output if opening the file failed. */ GLRO(dl_debug_fd) = STDOUT_FILENO; diff --git a/include/fcntl.h b/include/fcntl.h index 3d68c5ec67..966f797890 100644 --- a/include/fcntl.h +++ b/include/fcntl.h @@ -8,8 +8,9 @@ libc_hidden_proto (__open64) extern int __libc_open64 (const char *file, int oflag, ...); extern int __libc_open (const char *file, int oflag, ...); libc_hidden_proto (__libc_open) -extern int __libc_fcntl (int fd, int cmd, ...) attribute_hidden; +extern int __libc_fcntl (int fd, int cmd, ...); libc_hidden_proto (__libc_fcntl) +extern int __fcntl_nocancel_adjusted (int fd, int cmd, void *arg) attribute_hidden; extern int __open (const char *__file, int __oflag, ...); libc_hidden_proto (__open) extern int __fcntl (int __fd, int __cmd, ...); diff --git a/io/Versions b/io/Versions index 98898cb9d5..4448b7197c 100644 --- a/io/Versions +++ b/io/Versions @@ -128,4 +128,10 @@ libc { GLIBC_2.27 { copy_file_range; } + GLIBC_PRIVATE { + __libc_fcntl; + __fcntl_nocancel; + __open64_nocancel; + __write_nocancel; + } } diff --git a/nptl/Makefile b/nptl/Makefile index 94be92c789..6cfc8c60ee 100644 --- a/nptl/Makefile +++ b/nptl/Makefile @@ -36,7 +36,7 @@ static-only-routines = pthread_atfork # We need to provide certain routines for compatibility with existing # binaries. pthread-compat-wrappers = \ - write read close fcntl accept \ + write read close accept \ connect recv recvfrom send \ sendto fsync lseek lseek64 \ msync nanosleep open open64 pause \ @@ -120,7 +120,7 @@ libpthread-routines = nptl-init vars events version pt-interp \ cancellation \ lowlevellock \ lll_timedlock_wait lll_timedwait_tid \ - pt-fork pt-vfork \ + pt-fork pt-vfork pt-fcntl \ $(pthread-compat-wrappers) \ pt-raise pt-system \ flockfile ftrylockfile funlockfile \ diff --git a/posix/Versions b/posix/Versions index 65e96870e1..cad4c23e8c 100644 --- a/posix/Versions +++ b/posix/Versions @@ -139,5 +139,6 @@ libc { } GLIBC_PRIVATE { __libc_fork; __libc_pread; __libc_pwrite; + __nanosleep_nocancel; __pause_nocancel; } } diff --git a/sysdeps/mach/hurd/dl-sysdep.c b/sysdeps/mach/hurd/dl-sysdep.c index 547108805e..ec55c47f35 100644 --- a/sysdeps/mach/hurd/dl-sysdep.c +++ b/sysdeps/mach/hurd/dl-sysdep.c @@ -339,6 +339,7 @@ open_file (const char *file_name, int flags, } check_no_hidden(__open); +check_no_hidden (__open64); int weak_function __open (const char *file_name, int mode, ...) { @@ -349,6 +350,7 @@ __open (const char *file_name, int mode, ...) else return (int)port; } +weak_alias (__open, __open64) check_no_hidden(__close); int weak_function @@ -359,9 +361,9 @@ __close (int fd) return 0; } -check_no_hidden(__libc_read); +check_no_hidden(__read); __ssize_t weak_function -__libc_read (int fd, void *buf, size_t nbytes) +__read (int fd, void *buf, size_t nbytes) { error_t err; char *data; @@ -381,11 +383,11 @@ __libc_read (int fd, void *buf, size_t nbytes) return nread; } -libc_hidden_weak (__libc_read) +libc_hidden_weak (__read) -check_no_hidden(__libc_write); +check_no_hidden(__write); __ssize_t weak_function -__libc_write (int fd, const void *buf, size_t nbytes) +__write (int fd, const void *buf, size_t nbytes) { error_t err; mach_msg_type_number_t nwrote; @@ -398,7 +400,7 @@ __libc_write (int fd, const void *buf, size_t nbytes) return nwrote; } -libc_hidden_weak (__libc_write) +libc_hidden_weak (__write) /* This is only used for printing messages (see dl-misc.c). */ check_no_hidden(__writev); diff --git a/sysdeps/posix/fdopendir.c b/sysdeps/posix/fdopendir.c index ab4541f7fc..dafb5d20c1 100644 --- a/sysdeps/posix/fdopendir.c +++ b/sysdeps/posix/fdopendir.c @@ -38,7 +38,7 @@ __fdopendir (int fd) } /* Make sure the descriptor allows for reading. */ - int flags = __fcntl (fd, F_GETFL); + int flags = __fcntl_nocancel (fd, F_GETFL); if (__glibc_unlikely (flags == -1)) return NULL; if (__glibc_unlikely ((flags & O_ACCMODE) == O_WRONLY)) diff --git a/sysdeps/posix/opendir.c b/sysdeps/posix/opendir.c index dea23b2ff5..0875385f65 100644 --- a/sysdeps/posix/opendir.c +++ b/sysdeps/posix/opendir.c @@ -99,7 +99,7 @@ __alloc_dir (int fd, bool close_fd, int flags, const struct stat64 *statp) /* We have to set the close-on-exit flag if the user provided the file descriptor. */ if (!close_fd - && __builtin_expect (__fcntl (fd, F_SETFD, FD_CLOEXEC), 0) < 0) + && __glibc_unlikely (__fcntl_nocancel (fd, F_SETFD, FD_CLOEXEC) < 0)) goto lose; const size_t default_allocation = (4 * BUFSIZ < sizeof (struct dirent64) diff --git a/sysdeps/unix/pt-fcntl.c b/sysdeps/unix/pt-fcntl.c new file mode 100644 index 0000000000..8113d52b86 --- /dev/null +++ b/sysdeps/unix/pt-fcntl.c @@ -0,0 +1,49 @@ +/* ABI compatibility for 'fcntl' symbol in libpthread ABI. + Copyright (C) 2018 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 + <http://www.gnu.org/licenses/>. */ + +#include <fcntl.h> +#include <stdarg.h> +#include <shlib-compat.h> + +/* libpthread once had its own fcntl, though there was no apparent reason + for it. There is no use in having a separate symbol in libpthread, but + the historical ABI requires it. For static linking, there is no need to + provide anything here--the libc version will be linked in. For shared + library ABI compatibility, there must be __fcntl and fcntl symbols in + libpthread.so. */ + +#if SHLIB_COMPAT (libpthread, GLIBC_2_0, GLIBC_2_28) + +static int +fcntl_compat (int fd, int cmd, ...) +{ + void *arg; + va_list ap; + va_start (ap, cmd); + arg = va_arg (ap, void *); + va_end (ap); + return __libc_fcntl (fd, cmd, arg); +} + +weak_alias (fcntl_compat, fcntl_alias) +compat_symbol (libpthread, fcntl_alias, fcntl, GLIBC_2_0); + +weak_alias (fcntl_compat, __fcntl_alias) +compat_symbol (libpthread, __fcntl_alias, __fcntl, GLIBC_2_0); + +#endif diff --git a/sysdeps/unix/sysv/linux/Makefile b/sysdeps/unix/sysv/linux/Makefile index cd6244f7ea..215fd5d136 100644 --- a/sysdeps/unix/sysv/linux/Makefile +++ b/sysdeps/unix/sysv/linux/Makefile @@ -167,7 +167,12 @@ endif ifeq ($(subdir),io) sysdep_routines += xstatconv internal_statvfs internal_statvfs64 \ - sync_file_range fallocate fallocate64 + sync_file_range fallocate fallocate64 \ + close_nocancel fcntl_nocancel nanosleep_nocancel \ + open_nocancel open64_nocancel \ + openat_nocancel openat64_nocancel \ + pause_nocancel read_nocancel waitpid_nocancel write_nocancel + sysdep_headers += bits/fcntl-linux.h tests += tst-fallocate tst-fallocate64 diff --git a/sysdeps/unix/sysv/linux/close.c b/sysdeps/unix/sysv/linux/close.c index c832d27a0f..fa0938bd89 100644 --- a/sysdeps/unix/sysv/linux/close.c +++ b/sysdeps/unix/sysv/linux/close.c @@ -29,14 +29,3 @@ __close (int fd) libc_hidden_def (__close) strong_alias (__close, __libc_close) weak_alias (__close, close) - -# if !IS_IN (rtld) -int -__close_nocancel (int fd) -{ - return INLINE_SYSCALL_CALL (close, fd); -} -#else -strong_alias (__libc_close, __close_nocancel) -#endif -libc_hidden_def (__close_nocancel) diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/fcntl.c b/sysdeps/unix/sysv/linux/close_nocancel.c index 48198c1150..7d744f9096 100644 --- a/sysdeps/unix/sysv/linux/powerpc/powerpc64/fcntl.c +++ b/sysdeps/unix/sysv/linux/close_nocancel.c @@ -1,4 +1,5 @@ -/* Copyright (C) 2000-2018 Free Software Foundation, Inc. +/* Linux close syscall implementation -- non-cancellable. + Copyright (C) 2018 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 +17,12 @@ <http://www.gnu.org/licenses/>. */ #include <unistd.h> -#include <fcntl.h> +#include <sysdep-cancel.h> +#include <not-cancel.h> -static inline int -fcntl_adjust_cmd (int cmd) +int +__close_nocancel (int fd) { - if (cmd >= F_GETLK64 && cmd <= F_SETLKW64) - cmd -= F_GETLK64 - F_GETLK; - return cmd; + return INLINE_SYSCALL_CALL (close, fd); } - -#define FCNTL_ADJUST_CMD(__cmd) \ - fcntl_adjust_cmd (__cmd) - -#include <sysdeps/unix/sysv/linux/fcntl.c> +libc_hidden_def (__close_nocancel) diff --git a/sysdeps/unix/sysv/linux/dl-sysdep.c b/sysdeps/unix/sysv/linux/dl-sysdep.c index b4cda3486a..0477e0e5fa 100644 --- a/sysdeps/unix/sysv/linux/dl-sysdep.c +++ b/sysdeps/unix/sysv/linux/dl-sysdep.c @@ -25,6 +25,7 @@ #include <sys/param.h> #include <sys/utsname.h> #include <ldsodefs.h> +#include <not-cancel.h> #ifdef SHARED # define DL_SYSDEP_INIT frob_brk () @@ -87,11 +88,11 @@ _dl_discover_osversion (void) if (__uname (&uts)) { /* This was not successful. Now try reading the /proc filesystem. */ - int fd = __open ("/proc/sys/kernel/osrelease", O_RDONLY); + int fd = __open64_nocancel ("/proc/sys/kernel/osrelease", O_RDONLY); if (fd < 0) return -1; - ssize_t reslen = __read (fd, bufmem, sizeof (bufmem)); - __close (fd); + ssize_t reslen = __read_nocancel (fd, bufmem, sizeof (bufmem)); + __close_nocancel (fd); if (reslen <= 0) /* This also didn't work. We give up since we cannot make sure the library can actually work. */ diff --git a/sysdeps/unix/sysv/linux/fcntl.c b/sysdeps/unix/sysv/linux/fcntl.c index a3cb2aea10..e3992dc9d4 100644 --- a/sysdeps/unix/sysv/linux/fcntl.c +++ b/sysdeps/unix/sysv/linux/fcntl.c @@ -1,4 +1,5 @@ -/* Copyright (C) 2000-2018 Free Software Foundation, Inc. +/* Linux fcntl syscall implementation. + Copyright (C) 2000-2018 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 @@ -29,24 +30,6 @@ # define FCNTL_ADJUST_CMD(__cmd) __cmd #endif -static int -fcntl_common (int fd, int cmd, void *arg) -{ - if (cmd == F_GETOWN) - { - INTERNAL_SYSCALL_DECL (err); - struct f_owner_ex fex; - int res = INTERNAL_SYSCALL_CALL (fcntl64, err, fd, F_GETOWN_EX, &fex); - if (!INTERNAL_SYSCALL_ERROR_P (res, err)) - return fex.type == F_OWNER_GID ? -fex.pid : fex.pid; - - return INLINE_SYSCALL_ERROR_RETURN_VALUE (INTERNAL_SYSCALL_ERRNO (res, - err)); - } - - return INLINE_SYSCALL_CALL (fcntl64, fd, cmd, (void *) arg); -} - int __libc_fcntl (int fd, int cmd, ...) { @@ -62,28 +45,10 @@ __libc_fcntl (int fd, int cmd, ...) if (cmd == F_SETLKW || cmd == F_SETLKW64) return SYSCALL_CANCEL (fcntl64, fd, cmd, (void *) arg); - return fcntl_common (fd, cmd, arg); + return __fcntl_nocancel_adjusted (fd, cmd, arg); } libc_hidden_def (__libc_fcntl) -#if !IS_IN (rtld) -int -__fcntl_nocancel (int fd, int cmd, ...) -{ - va_list ap; - void *arg; - - va_start (ap, cmd); - arg = va_arg (ap, void *); - va_end (ap); - - return fcntl_common (fd, cmd, arg); -} -#else -strong_alias (__libc_fcntl, __fcntl_nocancel) -#endif -libc_hidden_def (__fcntl_nocancel) - weak_alias (__libc_fcntl, __fcntl) libc_hidden_weak (__fcntl) weak_alias (__libc_fcntl, fcntl) diff --git a/sysdeps/unix/sysv/linux/fcntl_nocancel.c b/sysdeps/unix/sysv/linux/fcntl_nocancel.c new file mode 100644 index 0000000000..f50e382c4a --- /dev/null +++ b/sysdeps/unix/sysv/linux/fcntl_nocancel.c @@ -0,0 +1,65 @@ +/* Linux fcntl syscall implementation -- non-cancellable. + Copyright (C) 2018 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 + <http://www.gnu.org/licenses/>. */ + +#include <fcntl.h> +#include <stdarg.h> +#include <errno.h> +#include <sysdep-cancel.h> +#include <not-cancel.h> + +#ifndef __NR_fcntl64 +# define __NR_fcntl64 __NR_fcntl +#endif + +#ifndef FCNTL_ADJUST_CMD +# define FCNTL_ADJUST_CMD(__cmd) __cmd +#endif + +int +__fcntl_nocancel (int fd, int cmd, ...) +{ + va_list ap; + void *arg; + + va_start (ap, cmd); + arg = va_arg (ap, void *); + va_end (ap); + + cmd = FCNTL_ADJUST_CMD (cmd); + + return __fcntl_nocancel_adjusted (fd, cmd, arg); +} +hidden_def (__fcntl_nocancel) + +int +__fcntl_nocancel_adjusted (int fd, int cmd, void *arg) +{ + if (cmd == F_GETOWN) + { + INTERNAL_SYSCALL_DECL (err); + struct f_owner_ex fex; + int res = INTERNAL_SYSCALL_CALL (fcntl64, err, fd, F_GETOWN_EX, &fex); + if (!INTERNAL_SYSCALL_ERROR_P (res, err)) + return fex.type == F_OWNER_GID ? -fex.pid : fex.pid; + + return INLINE_SYSCALL_ERROR_RETURN_VALUE + (INTERNAL_SYSCALL_ERRNO (res, err)); + } + + return INLINE_SYSCALL_CALL (fcntl64, fd, cmd, (void *) arg); +} diff --git a/sysdeps/unix/sysv/linux/i386/smp.h b/sysdeps/unix/sysv/linux/i386/smp.h index 01734b1779..5457bb27d3 100644 --- a/sysdeps/unix/sysv/linux/i386/smp.h +++ b/sysdeps/unix/sysv/linux/i386/smp.h @@ -41,7 +41,7 @@ is_smp_system (void) else { /* This was not successful. Now try reading the /proc filesystem. */ - int fd = __open_nocancel ("/proc/sys/kernel/version", O_RDONLY); + int fd = __open64_nocancel ("/proc/sys/kernel/version", O_RDONLY); if (__builtin_expect (fd, 0) == -1 || __read_nocancel (fd, u.buf, sizeof (u.buf)) <= 0) /* This also didn't work. We give up and say it's a UP machine. */ diff --git a/sysdeps/unix/sysv/linux/nanosleep.c b/sysdeps/unix/sysv/linux/nanosleep.c index 8945837407..56296046ca 100644 --- a/sysdeps/unix/sysv/linux/nanosleep.c +++ b/sysdeps/unix/sysv/linux/nanosleep.c @@ -1,4 +1,4 @@ -/* Linux high resolution nanosleep implementation. +/* Linux nanosleep syscall implementation. Copyright (C) 2017-2018 Free Software Foundation, Inc. This file is part of the GNU C Library. @@ -29,11 +29,3 @@ __nanosleep (const struct timespec *requested_time, } hidden_def (__nanosleep) weak_alias (__nanosleep, nanosleep) - -int -__nanosleep_nocancel (const struct timespec *requested_time, - struct timespec *remaining) -{ - return INLINE_SYSCALL_CALL (nanosleep, requested_time, remaining); -} -hidden_def (__nanosleep_nocancel) diff --git a/sysdeps/unix/sysv/linux/nanosleep_nocancel.c b/sysdeps/unix/sysv/linux/nanosleep_nocancel.c new file mode 100644 index 0000000000..66f3efd09e --- /dev/null +++ b/sysdeps/unix/sysv/linux/nanosleep_nocancel.c @@ -0,0 +1,29 @@ +/* Linux nanosleep syscall implementation -- non-cancellable. + Copyright (C) 2018 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 + <http://www.gnu.org/licenses/>. */ + +#include <time.h> +#include <sysdep-cancel.h> +#include <not-cancel.h> + +int +__nanosleep_nocancel (const struct timespec *requested_time, + struct timespec *remaining) +{ + return INLINE_SYSCALL_CALL (nanosleep, requested_time, remaining); +} +hidden_def (__nanosleep_nocancel) diff --git a/sysdeps/unix/sysv/linux/nios2/Makefile b/sysdeps/unix/sysv/linux/nios2/Makefile index 20910fa013..5688a16c38 100644 --- a/sysdeps/unix/sysv/linux/nios2/Makefile +++ b/sysdeps/unix/sysv/linux/nios2/Makefile @@ -7,7 +7,3 @@ ifeq ($(subdir),misc) sysdep_headers += sys/cachectl.h sysdep_routines += cacheflush endif - -ifeq ($(subdir),nptl) -libpthread-routines := $(filter-out pt-vfork,$(libpthread-routines)) -endif diff --git a/sysdeps/unix/sysv/linux/nios2/pt-vfork.S b/sysdeps/unix/sysv/linux/nios2/pt-vfork.S new file mode 100644 index 0000000000..147427a42d --- /dev/null +++ b/sysdeps/unix/sysv/linux/nios2/pt-vfork.S @@ -0,0 +1 @@ +# Nios2 does not require a stub for vfork in libpthread. diff --git a/sysdeps/unix/sysv/linux/not-cancel.h b/sysdeps/unix/sysv/linux/not-cancel.h index e6cdd144c2..0b5c955989 100644 --- a/sysdeps/unix/sysv/linux/not-cancel.h +++ b/sysdeps/unix/sysv/linux/not-cancel.h @@ -30,31 +30,24 @@ /* Non cancellable open syscall. */ __typeof (open) __open_nocancel; -libc_hidden_proto (__open_nocancel) /* Non cancellable open syscall (LFS version). */ __typeof (open64) __open64_nocancel; -libc_hidden_proto (__open64_nocancel) /* Non cancellable openat syscall. */ __typeof (openat) __openat_nocancel; -libc_hidden_proto (__openat_nocancel) /* Non cacellable openat syscall (LFS version). */ __typeof (openat64) __openat64_nocancel; -libc_hidden_proto (__openat64_nocancel) /* Non cancellable read syscall. */ __typeof (__read) __read_nocancel; -libc_hidden_proto (__read_nocancel) /* Uncancelable write. */ __typeof (__write) __write_nocancel; -libc_hidden_proto (__write_nocancel) /* Uncancelable close. */ __typeof (__close) __close_nocancel; -libc_hidden_proto (__close_nocancel) /* Non cancellable close syscall that does not also set errno in case of failure. */ @@ -75,18 +68,28 @@ __writev_nocancel_nostatus (int fd, const struct iovec *iov, int iovcnt) /* Uncancelable waitpid. */ __typeof (waitpid) __waitpid_nocancel; -libc_hidden_proto (__waitpid_nocancel) /* Uncancelable pause. */ __typeof (pause) __pause_nocancel; -libc_hidden_proto (__pause_nocancel) /* Uncancelable nanosleep. */ __typeof (__nanosleep) __nanosleep_nocancel; -hidden_proto (__nanosleep_nocancel) /* Uncancelable fcntl. */ __typeof (__fcntl) __fcntl_nocancel; -libc_hidden_proto (__fcntl_nocancel) + +#if IS_IN (libc) || IS_IN (rtld) +hidden_proto (__open_nocancel) +hidden_proto (__open64_nocancel) +hidden_proto (__openat_nocancel) +hidden_proto (__openat64_nocancel) +hidden_proto (__read_nocancel) +hidden_proto (__write_nocancel) +hidden_proto (__close_nocancel) +hidden_proto (__waitpid_nocancel) +hidden_proto (__pause_nocancel) +hidden_proto (__nanosleep_nocancel) +hidden_proto (__fcntl_nocancel) +#endif #endif /* NOT_CANCEL_H */ diff --git a/sysdeps/unix/sysv/linux/open.c b/sysdeps/unix/sysv/linux/open.c index c189e285c9..7f12292b87 100644 --- a/sysdeps/unix/sysv/linux/open.c +++ b/sysdeps/unix/sysv/linux/open.c @@ -1,4 +1,5 @@ -/* Copyright (C) 2017-2018 Free Software Foundation, Inc. +/* Linux open syscall implementation, non-LFS. + Copyright (C) 2017-2018 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Chris Metcalf <cmetcalf@tilera.com>, 2011. @@ -22,7 +23,6 @@ #include <stdarg.h> #include <sysdep-cancel.h> -#include <not-cancel.h> #ifndef __OFF_T_MATCHES_OFF64_T @@ -48,25 +48,4 @@ libc_hidden_def (__libc_open) weak_alias (__libc_open, __open) libc_hidden_weak (__open) weak_alias (__libc_open, open) - -# if !IS_IN (rtld) -int -__open_nocancel (const char *file, int oflag, ...) -{ - int mode = 0; - - if (__OPEN_NEEDS_MODE (oflag)) - { - va_list arg; - va_start (arg, oflag); - mode = va_arg (arg, int); - va_end (arg); - } - - return INLINE_SYSCALL_CALL (openat, AT_FDCWD, file, oflag, mode); -} -# else -strong_alias (__libc_open, __open_nocancel) -# endif -libc_hidden_def (__open_nocancel) #endif diff --git a/sysdeps/unix/sysv/linux/open64.c b/sysdeps/unix/sysv/linux/open64.c index 4af5ee2466..55ef658800 100644 --- a/sysdeps/unix/sysv/linux/open64.c +++ b/sysdeps/unix/sysv/linux/open64.c @@ -1,4 +1,5 @@ -/* Copyright (C) 1991-2018 Free Software Foundation, Inc. +/* Linux open syscall implementation, LFS. + Copyright (C) 1991-2018 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 @@ -21,7 +22,7 @@ #include <stdarg.h> #include <sysdep-cancel.h> -#include <not-cancel.h> + #ifdef __OFF_T_MATCHES_OFF64_T # define EXTRA_OPEN_FLAGS 0 @@ -52,34 +53,9 @@ strong_alias (__libc_open64, __open64) libc_hidden_weak (__open64) weak_alias (__libc_open64, open64) -# if !IS_IN (rtld) -int -__open64_nocancel (const char *file, int oflag, ...) -{ - int mode = 0; - - if (__OPEN_NEEDS_MODE (oflag)) - { - va_list arg; - va_start (arg, oflag); - mode = va_arg (arg, int); - va_end (arg); - } - - return INLINE_SYSCALL_CALL (openat, AT_FDCWD, file, oflag | EXTRA_OPEN_FLAGS, - mode); -} -#else -strong_alias (__libc_open64, __open64_nocancel) -#endif -libc_hidden_def (__open64_nocancel) - #ifdef __OFF_T_MATCHES_OFF64_T strong_alias (__libc_open64, __libc_open) strong_alias (__libc_open64, __open) libc_hidden_weak (__open) weak_alias (__libc_open64, open) - -strong_alias (__open64_nocancel, __open_nocancel) -libc_hidden_weak (__open_nocancel) #endif diff --git a/sysdeps/unix/sysv/linux/open64_nocancel.c b/sysdeps/unix/sysv/linux/open64_nocancel.c new file mode 100644 index 0000000000..5d039eada6 --- /dev/null +++ b/sysdeps/unix/sysv/linux/open64_nocancel.c @@ -0,0 +1,54 @@ +/* Linux open syscall implementation, LFS, non-cancellable. + Copyright (C) 2018 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 + <http://www.gnu.org/licenses/>. */ + +#include <sys/types.h> +#include <sys/stat.h> +#include <fcntl.h> +#include <stdarg.h> + +#include <not-cancel.h> + +#ifdef __OFF_T_MATCHES_OFF64_T +# define EXTRA_OPEN_FLAGS 0 +#else +# define EXTRA_OPEN_FLAGS O_LARGEFILE +#endif + +int +__open64_nocancel (const char *file, int oflag, ...) +{ + int mode = 0; + + if (__OPEN_NEEDS_MODE (oflag)) + { + va_list arg; + va_start (arg, oflag); + mode = va_arg (arg, int); + va_end (arg); + } + + return INLINE_SYSCALL_CALL (openat, AT_FDCWD, file, oflag | EXTRA_OPEN_FLAGS, + mode); +} + +hidden_def (__open64_nocancel) + +#ifdef __OFF_T_MATCHES_OFF64_T +strong_alias (__open64_nocancel, __open_nocancel) +hidden_def (__open_nocancel) +#endif diff --git a/sysdeps/unix/sysv/linux/open_nocancel.c b/sysdeps/unix/sysv/linux/open_nocancel.c new file mode 100644 index 0000000000..2ee3e527cb --- /dev/null +++ b/sysdeps/unix/sysv/linux/open_nocancel.c @@ -0,0 +1,46 @@ +/* Linux open syscall implementation, non-LFS, non-cancellable. + Copyright (C) 2018 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 + <http://www.gnu.org/licenses/>. */ + +#include <sys/types.h> +#include <sys/stat.h> +#include <fcntl.h> +#include <stdarg.h> + +#include <sysdep-cancel.h> +#include <not-cancel.h> + +#ifndef __OFF_T_MATCHES_OFF64_T + +int +__open_nocancel (const char *file, int oflag, ...) +{ + int mode = 0; + + if (__OPEN_NEEDS_MODE (oflag)) + { + va_list arg; + va_start (arg, oflag); + mode = va_arg (arg, int); + va_end (arg); + } + + return INLINE_SYSCALL_CALL (openat, AT_FDCWD, file, oflag, mode); +} +hidden_def (__open_nocancel) + +#endif diff --git a/sysdeps/unix/sysv/linux/openat.c b/sysdeps/unix/sysv/linux/openat.c index 9601e617db..d0ad242271 100644 --- a/sysdeps/unix/sysv/linux/openat.c +++ b/sysdeps/unix/sysv/linux/openat.c @@ -1,4 +1,5 @@ -/* Copyright (C) 2005-2018 Free Software Foundation, Inc. +/* Linux openat syscall implementation, non-LFS. + Copyright (C) 2005-2018 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 @@ -19,7 +20,6 @@ #include <stdarg.h> #include <sysdep-cancel.h> -#include <not-cancel.h> #ifndef __OFF_T_MATCHES_OFF64_T @@ -43,24 +43,4 @@ __libc_openat (int fd, const char *file, int oflag, ...) weak_alias (__libc_openat, __openat) libc_hidden_weak (__openat) weak_alias (__libc_openat, openat) - -# if !IS_IN (rtld) -int -__openat_nocancel (int fd, const char *file, int oflag, ...) -{ - mode_t mode = 0; - if (__OPEN_NEEDS_MODE (oflag)) - { - va_list arg; - va_start (arg, oflag); - mode = va_arg (arg, mode_t); - va_end (arg); - } - - return INLINE_SYSCALL_CALL (openat, fd, file, oflag, mode); -} -# else -strong_alias (__libc_openat, __openat_nocancel) -# endif -libc_hidden_weak (__openat_nocancel) #endif diff --git a/sysdeps/unix/sysv/linux/openat64.c b/sysdeps/unix/sysv/linux/openat64.c index 6f14711df3..536f4f5aff 100644 --- a/sysdeps/unix/sysv/linux/openat64.c +++ b/sysdeps/unix/sysv/linux/openat64.c @@ -1,4 +1,5 @@ -/* Copyright (C) 2007-2018 Free Software Foundation, Inc. +/* Linux openat syscall implementation, LFS. + Copyright (C) 2007-2018 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 @@ -19,7 +20,6 @@ #include <stdarg.h> #include <sysdep-cancel.h> -#include <not-cancel.h> #ifdef __OFF_T_MATCHES_OFF64_T # define EXTRA_OPEN_FLAGS 0 @@ -49,31 +49,8 @@ strong_alias (__libc_openat64, __openat64) libc_hidden_weak (__openat64) weak_alias (__libc_openat64, openat64) -#if !IS_IN (rtld) -int -__openat64_nocancel (int fd, const char *file, int oflag, ...) -{ - mode_t mode = 0; - if (__OPEN_NEEDS_MODE (oflag)) - { - va_list arg; - va_start (arg, oflag); - mode = va_arg (arg, mode_t); - va_end (arg); - } - - return INLINE_SYSCALL_CALL (openat, fd, file, oflag | EXTRA_OPEN_FLAGS, - mode); -} -#else -strong_alias (__libc_openat64, __openat64_nocancel) -#endif -libc_hidden_def (__openat64_nocancel) - #ifdef __OFF_T_MATCHES_OFF64_T strong_alias (__libc_openat64, __openat) libc_hidden_weak (__openat) weak_alias (__libc_openat64, openat) - -strong_alias (__openat64_nocancel, __openat_nocancel) #endif diff --git a/sysdeps/unix/sysv/linux/openat64_nocancel.c b/sysdeps/unix/sysv/linux/openat64_nocancel.c new file mode 100644 index 0000000000..f3facc3b72 --- /dev/null +++ b/sysdeps/unix/sysv/linux/openat64_nocancel.c @@ -0,0 +1,51 @@ +/* Linux openat syscall implementation, LFS, non-cancellable. + Copyright (C) 2018 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 + <http://www.gnu.org/licenses/>. */ + +#include <fcntl.h> +#include <stdarg.h> + +#include <sysdep-cancel.h> +#include <not-cancel.h> + +#ifdef __OFF_T_MATCHES_OFF64_T +# define EXTRA_OPEN_FLAGS 0 +#else +# define EXTRA_OPEN_FLAGS O_LARGEFILE +#endif + +int +__openat64_nocancel (int fd, const char *file, int oflag, ...) +{ + mode_t mode = 0; + if (__OPEN_NEEDS_MODE (oflag)) + { + va_list arg; + va_start (arg, oflag); + mode = va_arg (arg, mode_t); + va_end (arg); + } + + return INLINE_SYSCALL_CALL (openat, fd, file, oflag | EXTRA_OPEN_FLAGS, + mode); +} +hidden_def (__openat64_nocancel) + +#ifdef __OFF_T_MATCHES_OFF64_T +strong_alias (__openat64_nocancel, __openat_nocancel) +hidden_def (__openat_nocancel) +#endif diff --git a/sysdeps/unix/sysv/linux/openat_nocancel.c b/sysdeps/unix/sysv/linux/openat_nocancel.c new file mode 100644 index 0000000000..ac98238cda --- /dev/null +++ b/sysdeps/unix/sysv/linux/openat_nocancel.c @@ -0,0 +1,43 @@ +/* Linux openat syscall implementation, non-LFS, non-cancellable. + Copyright (C) 2018 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 + <http://www.gnu.org/licenses/>. */ + +#include <fcntl.h> +#include <stdarg.h> + +#include <sysdep-cancel.h> +#include <not-cancel.h> + +#ifndef __OFF_T_MATCHES_OFF64_T + +int +__openat_nocancel (int fd, const char *file, int oflag, ...) +{ + mode_t mode = 0; + if (__OPEN_NEEDS_MODE (oflag)) + { + va_list arg; + va_start (arg, oflag); + mode = va_arg (arg, mode_t); + va_end (arg); + } + + return INLINE_SYSCALL_CALL (openat, fd, file, oflag, mode); +} +hidden_def (__openat_nocancel) + +#endif diff --git a/sysdeps/unix/sysv/linux/pause.c b/sysdeps/unix/sysv/linux/pause.c index 7c8d9f4861..7b90365b98 100644 --- a/sysdeps/unix/sysv/linux/pause.c +++ b/sysdeps/unix/sysv/linux/pause.c @@ -19,7 +19,6 @@ #include <signal.h> #include <unistd.h> #include <sysdep-cancel.h> -#include <not-cancel.h> /* Suspend the process until a signal arrives. This always returns -1 and sets errno to EINTR. */ @@ -33,14 +32,3 @@ __libc_pause (void) #endif } weak_alias (__libc_pause, pause) - -int -__pause_nocancel (void) -{ -#ifdef __NR_pause - return INLINE_SYSCALL_CALL (pause); -#else - return INLINE_SYSCALL_CALL (ppoll, NULL, 0, NULL, NULL); -#endif -} -libc_hidden_def (__pause_nocancel) diff --git a/sysdeps/unix/sysv/linux/pause_nocancel.c b/sysdeps/unix/sysv/linux/pause_nocancel.c new file mode 100644 index 0000000000..322908c8ea --- /dev/null +++ b/sysdeps/unix/sysv/linux/pause_nocancel.c @@ -0,0 +1,33 @@ +/* Linux pause syscall implementation -- non-cancellable. + Copyright (C) 2018 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 + <http://www.gnu.org/licenses/>. */ + +#include <signal.h> +#include <unistd.h> +#include <sysdep-cancel.h> +#include <not-cancel.h> + +int +__pause_nocancel (void) +{ +#ifdef __NR_pause + return INLINE_SYSCALL_CALL (pause); +#else + return INLINE_SYSCALL_CALL (ppoll, NULL, 0, NULL, NULL); +#endif +} +hidden_def (__pause_nocancel) diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/sysdep.h b/sysdeps/unix/sysv/linux/powerpc/powerpc64/sysdep.h index 0fc179a9a1..0956cf04a7 100644 --- a/sysdeps/unix/sysv/linux/powerpc/powerpc64/sysdep.h +++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/sysdep.h @@ -236,4 +236,13 @@ # endif #endif +/* In the PowerPC64 ABI, the unadorned F_GETLK* opcodes should be used + even by largefile64 code. */ +#define FCNTL_ADJUST_CMD(__cmd) \ + ({ int cmd_ = (__cmd); \ + if (cmd_ >= F_GETLK64 && cmd_ <= F_SETLKW64) \ + cmd_ -= F_GETLK64 - F_GETLK; \ + cmd_; }) + + #endif /* linux/powerpc/powerpc64/sysdep.h */ diff --git a/sysdeps/unix/sysv/linux/pthread_getname.c b/sysdeps/unix/sysv/linux/pthread_getname.c index 358682f436..726218b4df 100644 --- a/sysdeps/unix/sysv/linux/pthread_getname.c +++ b/sysdeps/unix/sysv/linux/pthread_getname.c @@ -45,7 +45,7 @@ pthread_getname_np (pthread_t th, char *buf, size_t len) char fname[sizeof (FMT) + 8]; sprintf (fname, FMT, (unsigned int) pd->tid); - int fd = __open_nocancel (fname, O_RDONLY); + int fd = __open64_nocancel (fname, O_RDONLY); if (fd == -1) return errno; diff --git a/sysdeps/unix/sysv/linux/pthread_setname.c b/sysdeps/unix/sysv/linux/pthread_setname.c index 5a8b500128..91b5273480 100644 --- a/sysdeps/unix/sysv/linux/pthread_setname.c +++ b/sysdeps/unix/sysv/linux/pthread_setname.c @@ -46,7 +46,7 @@ pthread_setname_np (pthread_t th, const char *name) char fname[sizeof (FMT) + 8]; sprintf (fname, FMT, (unsigned int) pd->tid); - int fd = __open_nocancel (fname, O_RDWR); + int fd = __open64_nocancel (fname, O_RDWR); if (fd == -1) return errno; diff --git a/sysdeps/unix/sysv/linux/read.c b/sysdeps/unix/sysv/linux/read.c index 33ce38aaba..26d0bed404 100644 --- a/sysdeps/unix/sysv/linux/read.c +++ b/sysdeps/unix/sysv/linux/read.c @@ -18,7 +18,6 @@ #include <unistd.h> #include <sysdep-cancel.h> -#include <not-cancel.h> /* Read NBYTES into BUF from FD. Return the number read or -1. */ ssize_t @@ -32,14 +31,3 @@ libc_hidden_def (__read) weak_alias (__libc_read, __read) libc_hidden_def (read) weak_alias (__libc_read, read) - -#if !IS_IN (rtld) -ssize_t -__read_nocancel (int fd, void *buf, size_t nbytes) -{ - return INLINE_SYSCALL_CALL (read, fd, buf, nbytes); -} -#else -strong_alias (__libc_read, __read_nocancel) -#endif -libc_hidden_def (__read_nocancel) diff --git a/sysdeps/unix/sysv/linux/read_nocancel.c b/sysdeps/unix/sysv/linux/read_nocancel.c new file mode 100644 index 0000000000..24699e3e21 --- /dev/null +++ b/sysdeps/unix/sysv/linux/read_nocancel.c @@ -0,0 +1,28 @@ +/* Linux read syscall implementation -- non-cancellable. + Copyright (C) 2018 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 + <http://www.gnu.org/licenses/>. */ + +#include <unistd.h> +#include <sysdep-cancel.h> +#include <not-cancel.h> + +ssize_t +__read_nocancel (int fd, void *buf, size_t nbytes) +{ + return INLINE_SYSCALL_CALL (read, fd, buf, nbytes); +} +hidden_def (__read_nocancel) diff --git a/sysdeps/unix/sysv/linux/waitpid.c b/sysdeps/unix/sysv/linux/waitpid.c index d1d30fd431..8cf00e4efd 100644 --- a/sysdeps/unix/sysv/linux/waitpid.c +++ b/sysdeps/unix/sysv/linux/waitpid.c @@ -1,4 +1,5 @@ -/* Copyright (C) 1991-2018 Free Software Foundation, Inc. +/* Linux waitpid syscall implementation. + Copyright (C) 1991-2018 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 @@ -19,7 +20,6 @@ #include <sysdep-cancel.h> #include <stdlib.h> #include <sys/wait.h> -#include <not-cancel.h> __pid_t __waitpid (__pid_t pid, int *stat_loc, int options) @@ -32,14 +32,3 @@ __waitpid (__pid_t pid, int *stat_loc, int options) } libc_hidden_def (__waitpid) weak_alias (__waitpid, waitpid) - -__pid_t -__waitpid_nocancel (__pid_t pid, int *stat_loc, int options) -{ -#ifdef __NR_waitpid - return INLINE_SYSCALL_CALL (waitpid, pid, stat_loc, options); -#else - return INLINE_SYSCALL_CALL (wait4, pid, stat_loc, options, NULL); -#endif -} -libc_hidden_def (__waitpid_nocancel) diff --git a/sysdeps/unix/sysv/linux/waitpid_nocancel.c b/sysdeps/unix/sysv/linux/waitpid_nocancel.c new file mode 100644 index 0000000000..ff1ef3d241 --- /dev/null +++ b/sysdeps/unix/sysv/linux/waitpid_nocancel.c @@ -0,0 +1,34 @@ +/* Linux waitpid syscall implementation -- non-cancellable. + Copyright (C) 2018 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 + <http://www.gnu.org/licenses/>. */ + +#include <errno.h> +#include <sysdep-cancel.h> +#include <stdlib.h> +#include <sys/wait.h> +#include <not-cancel.h> + +__pid_t +__waitpid_nocancel (__pid_t pid, int *stat_loc, int options) +{ +#ifdef __NR_waitpid + return INLINE_SYSCALL_CALL (waitpid, pid, stat_loc, options); +#else + return INLINE_SYSCALL_CALL (wait4, pid, stat_loc, options, NULL); +#endif +} +libc_hidden_def (__waitpid_nocancel) diff --git a/sysdeps/unix/sysv/linux/write.c b/sysdeps/unix/sysv/linux/write.c index c96dc6f397..558639d471 100644 --- a/sysdeps/unix/sysv/linux/write.c +++ b/sysdeps/unix/sysv/linux/write.c @@ -18,7 +18,6 @@ #include <unistd.h> #include <sysdep-cancel.h> -#include <not-cancel.h> /* Write NBYTES of BUF to FD. Return the number written, or -1. */ ssize_t @@ -32,14 +31,3 @@ weak_alias (__libc_write, __write) libc_hidden_weak (__write) weak_alias (__libc_write, write) libc_hidden_weak (write) - -#if !IS_IN (rtld) -ssize_t -__write_nocancel (int fd, const void *buf, size_t nbytes) -{ - return INLINE_SYSCALL_CALL (write, fd, buf, nbytes); -} -#else -strong_alias (__libc_write, __write_nocancel) -#endif -libc_hidden_def (__write_nocancel) diff --git a/sysdeps/unix/sysv/linux/write_nocancel.c b/sysdeps/unix/sysv/linux/write_nocancel.c new file mode 100644 index 0000000000..6fe1ea2aaa --- /dev/null +++ b/sysdeps/unix/sysv/linux/write_nocancel.c @@ -0,0 +1,28 @@ +/* Linux write syscall implementation -- non-cancellable. + Copyright (C) 2018 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 + <http://www.gnu.org/licenses/>. */ + +#include <unistd.h> +#include <sysdep-cancel.h> +#include <not-cancel.h> + +ssize_t +__write_nocancel (int fd, const void *buf, size_t nbytes) +{ + return INLINE_SYSCALL_CALL (write, fd, buf, nbytes); +} +hidden_def (__write_nocancel) |