diff options
Diffstat (limited to 'sysdeps/unix')
24 files changed, 1684 insertions, 87 deletions
diff --git a/sysdeps/unix/sysv/linux/alpha/fxstatat.c b/sysdeps/unix/sysv/linux/alpha/fxstatat.c new file mode 100644 index 0000000000..65b7ad97a3 --- /dev/null +++ b/sysdeps/unix/sysv/linux/alpha/fxstatat.c @@ -0,0 +1,100 @@ +/* Copyright (C) 2005 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, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#define __fxstatat64 __fxstatat64_disable + +#include <errno.h> +#include <fcntl.h> +#include <stddef.h> +#include <stdio.h> +#include <sys/stat.h> +#include <kernel_stat.h> +#include <sysdep.h> +#include <sys/syscall.h> +#include <xstatconv.h> + +#undef __fxstatat64 + + +/* Get information about the file NAME in BUF. */ +int +__fxstatat (int vers, int fd, const char *file, struct stat *st, int flag) +{ + if (flag & ~AT_SYMLINK_NOFOLLOW) + { + __set_errno (EINVAL); + return -1; + } + + char *buf = NULL; + + if (fd != AT_FDCWD && file[0] != '/') + { + size_t filelen = strlen (file); + static const char procfd[] = "/proc/self/fd/%d/%s"; + /* Buffer for the path name we are going to use. It consists of + - the string /proc/self/fd/ + - the file descriptor number + - the file name provided. + The final NUL is included in the sizeof. A bit of overhead + due to the format elements compensates for possible negative + numbers. */ + size_t buflen = sizeof (procfd) + sizeof (int) * 3 + filelen; + buf = alloca (buflen); + + __snprintf (buf, buflen, procfd, fd, file); + file = buf; + } + + INTERNAL_SYSCALL_DECL (err); + int result, errno_out; + struct kernel_stat kst; + + if (vers == _STAT_VER_KERNEL64 && !__libc_missing_axp_stat64) + { + if (flags & AT_SYMLINK_NOFOLLOW) + result = INTERNAL_SYSCALL (lstat64, err, 2, file, st); + else + result = INTERNAL_SYSCALL (stat64, err, 2, file, st); + + if (__builtin_expect (!INTERNAL_SYSCALL_ERROR_P (result, err), 1)) + return result; + errno_out = INTERNAL_SYSCALL_ERRNO (result, err); + if (errno_out != ENOSYS) + goto fail; + __libc_missing_axp_stat64 = 1; + } + + if (flag & AT_SYMLINK_NOFOLLOW) + result = INTERNAL_SYSCALL (lstat, err, 2, file, &kst); + else + result = INTERNAL_SYSCALL (stat, err, 2, file, &kst); + + if (__builtin_expect (!INTERNAL_SYSCALL_ERROR_P (result, err), 1)) + return __xstat_conv (vers, &kst, st); + errno_out = INTERNAL_SYSCALL_ERRNO (result, err); + + fail: + __atfct_seterrno (errno_out, fd, buf); + + return -1; +} +hidden_def (__xstat) +weak_alias (__xstat, _xstat); +strong_alias (__xstat, __xstat64); +hidden_ver (__xstat, __xstat64) diff --git a/sysdeps/unix/sysv/linux/fchownat.c b/sysdeps/unix/sysv/linux/fchownat.c new file mode 100644 index 0000000000..d3cb992a09 --- /dev/null +++ b/sysdeps/unix/sysv/linux/fchownat.c @@ -0,0 +1,73 @@ +/* Copyright (C) 2005 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, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#include <errno.h> +#include <fcntl.h> +#include <stddef.h> +#include <stdio.h> +#include <unistd.h> +#include <sys/types.h> + +/* Change the owner and group of FILE. */ +int +fchownat (fd, file, owner, group, flag) + int fd; + const char *file; + uid_t owner; + gid_t group; + int flag; +{ + if (flag & ~AT_SYMLINK_NOFOLLOW) + { + __set_errno (EINVAL); + return -1; + } + + char *buf = NULL; + + if (fd != AT_FDCWD && file[0] != '/') + { + size_t filelen = strlen (file); + static const char procfd[] = "/proc/self/fd/%d/%s"; + /* Buffer for the path name we are going to use. It consists of + - the string /proc/self/fd/ + - the file descriptor number + - the file name provided. + The final NUL is included in the sizeof. A bit of overhead + due to the format elements compensates for possible negative + numbers. */ + size_t buflen = sizeof (procfd) + sizeof (int) * 3 + filelen; + buf = alloca (buflen); + + __snprintf (buf, buflen, procfd, fd, file); + file = buf; + } + + int result; + INTERNAL_SYSCALL_DECL (err); + + if (flag & AT_SYMLINK_NOFOLLOW) + result = INTERNAL_SYSCALL (lchown, err, 3, file, owner, group); + else + result = INTERNAL_SYSCALL (chown, err, 3, file, owner, group); + + if (__builtin_expect (INTERNAL_SYSCALL_ERROR_P (result, err), 0)) + __atfct_seterrno (INTERNAL_SYSCALL_ERRNO (result, err), fd, buf); + + return result; +} diff --git a/sysdeps/unix/sysv/linux/futimesat.c b/sysdeps/unix/sysv/linux/futimesat.c new file mode 100644 index 0000000000..2fdedb0ff4 --- /dev/null +++ b/sysdeps/unix/sysv/linux/futimesat.c @@ -0,0 +1,97 @@ +/* Copyright (C) 2005 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, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#include <errno.h> +#include <fcntl.h> +#include <stddef.h> +#include <stdio.h> +#include <utime.h> +#include <sys/time.h> +#include <sysdep.h> +#include "kernel-features.h" + + +/* Change the access time of FILE relative to FD to TVP[0] and + the modification time of FILE to TVP[1]. */ +int +futimesat (fd, file, tvp) + int fd; + const char *file; + const struct timeval tvp[2]; +{ + char *buf = NULL; + + if (fd != AT_FDCWD && file[0] != '/') + { + size_t filelen = strlen (file); + static const char procfd[] = "/proc/self/fd/%d/%s"; + /* Buffer for the path name we are going to use. It consists of + - the string /proc/self/fd/ + - the file descriptor number + - the file name provided. + The final NUL is included in the sizeof. A bit of overhead + due to the format elements compensates for possible negative + numbers. */ + size_t buflen = sizeof (procfd) + sizeof (int) * 3 + filelen; + buf = alloca (buflen); + + __snprintf (buf, buflen, procfd, fd, file); + file = buf; + } + + int result; + INTERNAL_SYSCALL_DECL (err); + +#ifdef __NR_utimes + result = INTERNAL_SYSCALL (utimes, err, 2, file, tvp); + if (__builtin_expect (!INTERNAL_SYSCALL_ERROR_P (result, err), 1)) + return result; + +# ifndef __ASSUME_UTIMES + if (INTERNAL_SYSCALL_ERRNO (result, err) != ENOSYS) + goto fail; +# endif +#endif + + /* The utimes() syscall does not exist or is not available in the + used kernel. Use utime(). For this we have to convert to the + data format utime() expects. */ +#ifndef __ASSUME_UTIMES + struct utimbuf tmp; + struct utimbuf *times; + + if (tvp != NULL) + { + times = &tmp; + tmp.actime = tvp[0].tv_sec + tvp[0].tv_usec / 1000000; + tmp.modtime = tvp[1].tv_sec + tvp[1].tv_usec / 1000000; + } + else + times = NULL; + + result = INTERNAL_SYSCALL (utime, err, 2, file, times); + if (__builtin_expect (!INTERNAL_SYSCALL_ERROR_P (result, err), 1)) + return result; + + fail: +#endif + + __atfct_seterrno (INTERNAL_SYSCALL_ERRNO (result, err), fd, buf); + + return -1; +} diff --git a/sysdeps/unix/sysv/linux/fxstatat.c b/sysdeps/unix/sysv/linux/fxstatat.c new file mode 100644 index 0000000000..9bc3dbc459 --- /dev/null +++ b/sysdeps/unix/sysv/linux/fxstatat.c @@ -0,0 +1,106 @@ +/* Copyright (C) 2005 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, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +/* Ho hum, if fxstatat == fxstatat64 we must get rid of the prototype or gcc + will complain since they don't strictly match. */ +#define __fxstatat64 __fxstatat64_disable + +#include <errno.h> +#include <fcntl.h> +#include <stddef.h> +#include <stdio.h> +#include <sys/stat.h> +#include <kernel_stat.h> + +#include <sysdep.h> +#include <sys/syscall.h> +#include <bp-checks.h> + +#include <xstatconv.h> + +/* Get information about the file NAME in BUF. */ +int +__fxstatat (int vers, int fd, const char *file, struct stat *st, int flag) +{ + if (flag & ~AT_SYMLINK_NOFOLLOW) + { + __set_errno (EINVAL); + return -1; + } + + char *buf = NULL; + + if (fd != AT_FDCWD && file[0] != '/') + { + size_t filelen = strlen (file); + static const char procfd[] = "/proc/self/fd/%d/%s"; + /* Buffer for the path name we are going to use. It consists of + - the string /proc/self/fd/ + - the file descriptor number + - the file name provided. + The final NUL is included in the sizeof. A bit of overhead + due to the format elements compensates for possible negative + numbers. */ + size_t buflen = sizeof (procfd) + sizeof (int) * 3 + filelen; + buf = alloca (buflen); + + __snprintf (buf, buflen, procfd, fd, file); + file = buf; + } + + int result; + INTERNAL_SYSCALL_DECL (err); + + if (vers == _STAT_VER_KERNEL) + { + if (flag & AT_SYMLINK_NOFOLLOW) + result = INTERNAL_SYSCALL (lstat, err, 2, CHECK_STRING (file), + CHECK_1 ((struct kernel_stat *) st)); + else + result = INTERNAL_SYSCALL (stat, err, 2, CHECK_STRING (file), + CHECK_1 ((struct kernel_stat *) st)); + + if (__builtin_expect (!INTERNAL_SYSCALL_ERROR_P (result, err), 1)) + return result; + } + +#ifdef STAT_IS_KERNEL_STAT + __set_errno (EINVAL); + return -1; +#else + struct kernel_stat kst; + + if (flag & AT_SYMLINK_NOFOLLOW) + result = INTERNAL_SYSCALL (lstat, err, 2, CHECK_STRING (file), + __ptrvalue (&kst)); + else + result = INTERNAL_SYSCALL (stat, err, 2, CHECK_STRING (file), + __ptrvalue (&kst)); + + if (__builtin_expect (!INTERNAL_SYSCALL_ERROR_P (result, err), 1)) + return __xstat_conv (vers, &kst, st); +#endif + + __atfct_seterrno (INTERNAL_SYSCALL_ERRNO (result, err), fd, buf); + + return -1; +} +#ifdef XSTAT_IS_XSTAT64 +# undef __fxstatat64 +strong_alias (__fxstatat, __fxstatat64); +#endif diff --git a/sysdeps/unix/sysv/linux/fxstatat64.c b/sysdeps/unix/sysv/linux/fxstatat64.c new file mode 100644 index 0000000000..8c41db710c --- /dev/null +++ b/sysdeps/unix/sysv/linux/fxstatat64.c @@ -0,0 +1,135 @@ +/* Copyright (C) 2005 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, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#include <errno.h> +#include <fcntl.h> +#include <stddef.h> +#include <stdio.h> +#include <sys/stat.h> +#include <kernel_stat.h> + +#include <sysdep.h> +#include <sys/syscall.h> +#include <bp-checks.h> + +#include "kernel-features.h" + +#if __ASSUME_STAT64_SYSCALL == 0 +# include <xstatconv.h> +#endif + +#ifdef __NR_stat64 +# if __ASSUME_STAT64_SYSCALL == 0 +/* The variable is shared between all wrappers around *stat64 calls. + This is the definition. */ +extern int __have_no_stat64; +# endif +#endif + +/* Get information about the file NAME in BUF. */ + +int +__fxstatat64 (int vers, int fd, const char *file, struct stat64 *st, int flag) +{ + if (flag & ~AT_SYMLINK_NOFOLLOW) + { + __set_errno (EINVAL); + return -1; + } + + char *buf = NULL; + + if (fd != AT_FDCWD && file[0] != '/') + { + size_t filelen = strlen (file); + static const char procfd[] = "/proc/self/fd/%d/%s"; + /* Buffer for the path name we are going to use. It consists of + - the string /proc/self/fd/ + - the file descriptor number + - the file name provided. + The final NUL is included in the sizeof. A bit of overhead + due to the format elements compensates for possible negative + numbers. */ + size_t buflen = sizeof (procfd) + sizeof (int) * 3 + filelen; + buf = alloca (buflen); + + __snprintf (buf, buflen, procfd, fd, file); + file = buf; + } + + int result; + INTERNAL_SYSCALL_DECL (err); + +#if __ASSUME_STAT64_SYSCALL > 0 + if (flag & AT_SYMLINK_NOFOLLOW) + result = INTERNAL_SYSCALL (lstat64, err, 2, CHECK_STRING (file), + CHECK_1 (st)); + else + result = INTERNAL_SYSCALL (stat64, err, 2, CHECK_STRING (file), + CHECK_1 (st)); + if (__builtin_expect (!INTERNAL_SYSCALL_ERROR_P (result, err), 1)) + { +# if defined _HAVE_STAT64___ST_INO && __ASSUME_ST_INO_64_BIT == 0 + if (st->__st_ino != (__ino_t) st->st_ino) + st->st_ino = st->__st_ino; +# endif + return result; + } +#else + struct kernel_stat kst; +# if defined __NR_stat64 + if (! __have_no_stat64) + { + if (flag & AT_SYMLINK_NOFOLLOW) + result = INTERNAL_SYSCALL (lstat64, err, 2, CHECK_STRING (file), + CHECK_1 (st)); + else + result = INTERNAL_SYSCALL (stat64, err, 2, CHECK_STRING (file), + CHECK_1 (st)); + + if (__builtin_expect (!INTERNAL_SYSCALL_ERROR_P (result, err), 1)) + { +# if defined _HAVE_STAT64___ST_INO && __ASSUME_ST_INO_64_BIT == 0 + if (st->__st_ino != (__ino_t) st->st_ino) + st->st_ino = st->__st_ino; +# endif + return result; + } + if (INTERNAL_SYSCALL_ERRNO (result, err) != ENOSYS) + goto fail; + + __have_no_stat64 = 1; + } +# endif + + if (flag & AT_SYMLINK_NOFOLLOW) + result = INTERNAL_SYSCALL (lstat, err, 2, CHECK_STRING (file), + __ptrvalue (&kst)); + else + result = INTERNAL_SYSCALL (stat, err, 2, CHECK_STRING (file), + __ptrvalue (&kst)); + + if (__builtin_expect (!INTERNAL_SYSCALL_ERROR_P (result, err), 1)) + return __xstat64_conv (vers, &kst, st); + + fail: + __atfct_seterrno (INTERNAL_SYSCALL_ERRNO (result, err), fd, buf); + + return -1; +#endif +} diff --git a/sysdeps/unix/sysv/linux/i386/fchownat.c b/sysdeps/unix/sysv/linux/i386/fchownat.c new file mode 100644 index 0000000000..331623f73d --- /dev/null +++ b/sysdeps/unix/sysv/linux/i386/fchownat.c @@ -0,0 +1,177 @@ +/* Copyright (C) 2005 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, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#include <errno.h> +#include <fcntl.h> +#include <stdio.h> +#include <unistd.h> + +#include <sysdep.h> +#include <sys/syscall.h> +#include <shlib-compat.h> +#include <bp-checks.h> + +#include <linux/posix_types.h> +#include "kernel-features.h" + +/* + In Linux 2.1.x the chown functions have been changed. A new function lchown + was introduced. The new chown now follows symlinks - the old chown and the + new lchown do not follow symlinks. + The new lchown function has the same number as the old chown had and the + new chown has a new number. When compiling with headers from Linux > 2.1.8x + it's impossible to run this libc with older kernels. In these cases libc + has therefore to route calls to chown to the old chown function. +*/ + +extern int __chown_is_lchown (const char *__file, uid_t __owner, + gid_t __group); +extern int __real_chown (const char *__file, uid_t __owner, gid_t __group); + + +#if defined __NR_lchown || __ASSUME_LCHOWN_SYSCALL > 0 +/* Running under Linux > 2.1.80. */ + +# ifdef __NR_chown32 +# if __ASSUME_32BITUIDS == 0 +/* This variable is shared with all files that need to check for 32bit + uids. */ +extern int __libc_missing_32bit_uids; +# endif +# endif /* __NR_chown32 */ +#endif + + +int +fchownat (int fd, const char *file, uid_t owner, gid_t group, int flag) +{ + if (flag & ~AT_SYMLINK_NOFOLLOW) + { + __set_errno (EINVAL); + return -1; + } + + char *buf = NULL; + + if (fd != AT_FDCWD && file[0] != '/') + { + size_t filelen = strlen (file); + static const char procfd[] = "/proc/self/fd/%d/%s"; + /* Buffer for the path name we are going to use. It consists of + - the string /proc/self/fd/ + - the file descriptor number + - the file name provided. + The final NUL is included in the sizeof. A bit of overhead + due to the format elements compensates for possible negative + numbers. */ + size_t buflen = sizeof (procfd) + sizeof (int) * 3 + filelen; + buf = alloca (buflen); + + __snprintf (buf, buflen, procfd, fd, file); + file = buf; + } + + int result; + INTERNAL_SYSCALL_DECL (err); + +#if defined __NR_lchown || __ASSUME_LCHOWN_SYSCALL > 0 +# if __ASSUME_LCHOWN_SYSCALL == 0 + static int __libc_old_chown; + +# ifdef __NR_chown32 + if (__libc_missing_32bit_uids <= 0) + { + if (flag & AT_SYMLINK_NOFOLLOW) + result = INTERNAL_SYSCALL (lchown32, err, 3, CHECK_STRING (file), + owner, group); + else + result = INTERNAL_SYSCALL (chown32, err, 3, CHECK_STRING (file), + owner, group); + + if (!INTERNAL_SYSCALL_ERROR_P (result, err)) + return result; + if (INTERNAL_SYSCALL_ERRNO (result, err) != ENOSYS) + goto fail; + + __libc_missing_32bit_uids = 1; + } +# endif /* __NR_chown32 */ + + if (((owner + 1) > (uid_t) ((__kernel_uid_t) -1U)) + || ((group + 1) > (gid_t) ((__kernel_gid_t) -1U))) + { + __set_errno (EINVAL); + return -1; + } + + if (!__libc_old_chown && (flag & AT_SYMLINK_NOFOLLOW) == 0) + { + result = INTERNAL_SYSCALL (chown, err, 3, CHECK_STRING (file), owner, + group); + + if (!INTERNAL_SYSCALL_ERROR_P (result, err)) + return result; + if (INTERNAL_SYSCALL_ERRNO (result, err) != ENOSYS) + goto fail; + + __libc_old_chown = 1; + } + + result = INTERNAL_SYSCALL (lchown, err, 3, CHECK_STRING (file), owner, + group); +# elif __ASSUME_32BITUIDS + /* This implies __ASSUME_LCHOWN_SYSCALL. */ + result = INTERNAL_SYSCALL (chown32, err, 3, CHECK_STRING (file), owner, + group); +# else + /* !__ASSUME_32BITUIDS && ASSUME_LCHOWN_SYSCALL */ +# ifdef __NR_chown32 + if (__libc_missing_32bit_uids <= 0) + { + result = INTERNAL_SYSCALL (chown32, err, 3, CHECK_STRING (file), owner, + group); + if (__builtin_expect (!INTERNAL_SYSCALL_ERROR_P (result, err), 1)) + return result; + if (INTERNAL_SYSCALL_ERRNO (result, err) != ENOSYS) + goto fail; + + __libc_missing_32bit_uids = 1; + } +# endif /* __NR_chown32 */ + if (((owner + 1) > (uid_t) ((__kernel_uid_t) -1U)) + || ((group + 1) > (gid_t) ((__kernel_gid_t) -1U))) + { + __set_errno (EINVAL); + return -1; + } + + result = INTERNAL_SYSCALL (chown, err, 3, CHECK_STRING (file), owner, group); +# endif +#else + result = INTERNAL_SYSCALL (chown, err, 3, CHECK_STRING (file), owner, group); +#endif + + if (__builtin_expect (INTERNAL_SYSCALL_ERROR_P (result, err), 0)) + { + fail: + __atfct_seterrno (INTERNAL_SYSCALL_ERRNO (result, err), fd, buf); + result = -1; + } + + return result; +} diff --git a/sysdeps/unix/sysv/linux/i386/fxstatat.c b/sysdeps/unix/sysv/linux/i386/fxstatat.c new file mode 100644 index 0000000000..2fc89e69c4 --- /dev/null +++ b/sysdeps/unix/sysv/linux/i386/fxstatat.c @@ -0,0 +1,148 @@ +/* Copyright (C) 2005 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, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +/* Ho hum, if fxstatat == fxstatat64 we must get rid of the prototype or gcc + will complain since they don't strictly match. */ +#define __fxstatat64 __fxstatat64_disable + +#include <errno.h> +#include <fcntl.h> +#include <stddef.h> +#include <stdio.h> +#include <sys/stat.h> +#include <kernel_stat.h> + +#include <sysdep.h> +#include <sys/syscall.h> +#include <bp-checks.h> + +#include "kernel-features.h" + +#include <xstatconv.h> + +#ifdef __NR_stat64 +# if __ASSUME_STAT64_SYSCALL == 0 +/* The variable is shared between all wrappers around *stat64 calls. */ +extern int __have_no_stat64; +# endif +#endif + + +/* Get information about the file NAME relative to FD in ST. */ +int +__fxstatat (int vers, int fd, const char *file, struct stat *st, int flag) +{ + if (flag & ~AT_SYMLINK_NOFOLLOW) + { + __set_errno (EINVAL); + return -1; + } + + char *buf = NULL; + + if (fd != AT_FDCWD && file[0] != '/') + { + size_t filelen = strlen (file); + static const char procfd[] = "/proc/self/fd/%d/%s"; + /* Buffer for the path name we are going to use. It consists of + - the string /proc/self/fd/ + - the file descriptor number + - the file name provided. + The final NUL is included in the sizeof. A bit of overhead + due to the format elements compensates for possible negative + numbers. */ + size_t buflen = sizeof (procfd) + sizeof (int) * 3 + filelen; + buf = alloca (buflen); + + __snprintf (buf, buflen, procfd, fd, file); + file = buf; + } + +#if __ASSUME_STAT64_SYSCALL == 0 + struct kernel_stat kst; +#endif + int result; + INTERNAL_SYSCALL_DECL (err); + + if (vers == _STAT_VER_KERNEL) + { + if (flag & AT_SYMLINK_NOFOLLOW) + result = INTERNAL_SYSCALL (lstat, err, 2, CHECK_STRING (file), + CHECK_1 ((struct kernel_stat *) st)); + else + result = INTERNAL_SYSCALL (stat, err, 2, CHECK_STRING (file), + CHECK_1 ((struct kernel_stat *) st)); + goto out; + } + +#if __ASSUME_STAT64_SYSCALL > 0 + struct stat64 st64; + + if (flag & AT_SYMLINK_NOFOLLOW) + result = INTERNAL_SYSCALL (lstat64, err, 2, CHECK_STRING (file), + __ptrvalue (&st64)); + else + result = INTERNAL_SYSCALL (stat64, err, 2, CHECK_STRING (file), + __ptrvalue (&st64)); + if (__builtin_expect (!INTERNAL_SYSCALL_ERROR_P (result, err), 1)) + return __xstat32_conv (vers, &st64, st); +#else +# if defined __NR_stat64 + /* To support 32 bit UIDs, we have to use stat64. The normal stat + call only returns 16 bit UIDs. */ + if (! __have_no_stat64) + { + struct stat64 st64; + + if (flag & AT_SYMLINK_NOFOLLOW) + result = INTERNAL_SYSCALL (lstat64, err, 2, CHECK_STRING (file), + __ptrvalue (&st64)); + else + result = INTERNAL_SYSCALL (stat64, err, 2, CHECK_STRING (file), + __ptrvalue (&st64)); + + if (__builtin_expect (!INTERNAL_SYSCALL_ERROR_P (result, err), 1)) + result = __xstat32_conv (vers, &st64, st); + + if (__builtin_expect (!INTERNAL_SYSCALL_ERROR_P (result, err), 1) + || INTERNAL_SYSCALL_ERRNO (result, err) != ENOSYS) + goto out; + + __have_no_stat64 = 1; + } +# endif + if (flag & AT_SYMLINK_NOFOLLOW) + result = INTERNAL_SYSCALL (lstat, err, 2, CHECK_STRING (file), + __ptrvalue (&kst)); + else + result = INTERNAL_SYSCALL (stat, err, 2, CHECK_STRING (file), + __ptrvalue (&kst)); + if (__builtin_expect (!INTERNAL_SYSCALL_ERROR_P (result, err), 1)) + return __xstat_conv (vers, &kst, st); +#endif /* __ASSUME_STAT64_SYSCALL */ + + out: + if (__builtin_expect (INTERNAL_SYSCALL_ERROR_P (result, err), 0)) + __atfct_seterrno (INTERNAL_SYSCALL_ERRNO (result, err), fd, buf); + + return result; +} +#ifdef XSTAT_IS_XSTAT64 +# undef __fxstatat64 +strong_alias (__fxstatat, __fxstatat64); +#endif diff --git a/sysdeps/unix/sysv/linux/m68k/fchownat.c b/sysdeps/unix/sysv/linux/m68k/fchownat.c new file mode 100644 index 0000000000..71df4feda7 --- /dev/null +++ b/sysdeps/unix/sysv/linux/m68k/fchownat.c @@ -0,0 +1,121 @@ +/* Copyright (C) 2005 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, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#include <errno.h> +#include <fcntl.h> +#include <stdio.h> +#include <unistd.h> + +#include <sysdep.h> +#include <sys/syscall.h> +#include <bp-checks.h> + +#include <linux/posix_types.h> +#include "kernel-features.h" + +#ifdef __NR_chown32 +# if __ASSUME_32BITUIDS == 0 +/* This variable is shared with all files that need to check for 32bit + uids. */ +extern int __libc_missing_32bit_uids; +# endif +#endif /* __NR_chown32 */ + +int +fchownat (int fd, const char *file, uid_t owner, gid_t group, int flag) +{ + if (flag & ~AT_SYMLINK_NOFOLLOW) + { + __set_errno (EINVAL); + return -1; + } + + char *buf = NULL; + + if (fd != AT_FDCWD && file[0] != '/') + { + size_t filelen = strlen (file); + static const char procfd[] = "/proc/self/fd/%d/%s"; + /* Buffer for the path name we are going to use. It consists of + - the string /proc/self/fd/ + - the file descriptor number + - the file name provided. + The final NUL is included in the sizeof. A bit of overhead + due to the format elements compensates for possible negative + numbers. */ + size_t buflen = sizeof (procfd) + sizeof (int) * 3 + filelen; + buf = alloca (buflen); + + __snprintf (buf, buflen, procfd, fd, file); + file = buf; + } + + int result; + INTERNAL_SYSCALL_DECL (err); + +#if __ASSUME_32BITUIDS > 0 + if (flag & AT_SYMLINK_NOFOLLOW) + result = INTERNAL_SYSCALL (lchown32, err, 3, CHECK_STRING (file), owner, + group); + else + result = INTERNAL_SYSCALL (chown32, err, 3, CHECK_STRING (file), owner, + group); +#else +# ifdef __NR_chown32 + if (__libc_missing_32bit_uids <= 0) + { + if (flag & AT_SYMLINK_NOFOLLOW) + result = INTERNAL_SYSCALL (lchown32, err, 3, CHECK_STRING (file), + owner, group); + else + result = INTERNAL_SYSCALL (chown32, err, 3, CHECK_STRING (file), owner, + group); + + if (__builtin_expect (!INTERNAL_SYSCALL_ERROR_P (result, err), 1)) + return result; + if (INTERNAL_SYSCALL_ERRNO (result, err) != ENOSYS) + goto fail; + + __libc_missing_32bit_uids = 1; + } +# endif /* __NR_chown32 */ + + if (((owner + 1) > (gid_t) ((__kernel_uid_t) -1U)) + || ((group + 1) > (gid_t) ((__kernel_gid_t) -1U))) + { + __set_errno (EINVAL); + return -1; + } + + if (flag & AT_SYMLINK_NOFOLLOW) + result = INTERNAL_SYSCALL (lchown, err, 3, CHECK_STRING (file), owner, + group); + else + result = INTERNAL_SYSCALL (chown, err, 3, CHECK_STRING (file), owner, + group); +#endif + + if (__builtin_expect (INTERNAL_SYSCALL_ERROR_P (result, err), 0)) + { + fail: + __atfct_seterrno (INTERNAL_SYSCALL_ERRNO (result, err), fd, buf); + result = -1; + } + + return result; +} diff --git a/sysdeps/unix/sysv/linux/m68k/fxstatat.c b/sysdeps/unix/sysv/linux/m68k/fxstatat.c new file mode 100644 index 0000000000..0f8b3135d8 --- /dev/null +++ b/sysdeps/unix/sysv/linux/m68k/fxstatat.c @@ -0,0 +1 @@ +#include <sysdeps/unix/sysv/linux/i386/fxstatat.c> diff --git a/sysdeps/unix/sysv/linux/openat.c b/sysdeps/unix/sysv/linux/openat.c index a89f172b62..d5d976cbc4 100644 --- a/sysdeps/unix/sysv/linux/openat.c +++ b/sysdeps/unix/sysv/linux/openat.c @@ -29,6 +29,30 @@ #ifndef OPENAT # define OPENAT openat # define MORE_OFLAGS 0 + + +void +attribute_hidden +__atfct_seterrno (int errval, int fd, const char *buf) +{ + if (buf != NULL && errval == ENOTDIR) + { + /* This can mean either the file descriptor is invalid or + /proc is not mounted. */ + struct stat64 st; + if (__fxstat64 (_STAT_VER, fd, &st) != 0) + /* errno is already set correctly. */ + return; + + /* If /proc is not mounted there is nothing we can do. */ + if (S_ISDIR (st.st_mode) + && (__xstat64 (_STAT_VER, "/proc/self/fd", &st) != 0 + || !S_ISDIR (st.st_mode))) + errval = ENOSYS; + } + + __set_errno (errval); +} #endif /* Open FILE with access OFLAG. Interpret relative paths relative to @@ -42,7 +66,7 @@ OPENAT (fd, file, oflag) { char *buf = NULL; - if (file[0] != '/') + if (fd != AT_FDCWD && file[0] != '/') { size_t filelen = strlen (file); static const char procfd[] = "/proc/self/fd/%d/%s"; @@ -85,26 +109,9 @@ OPENAT (fd, file, oflag) if (__builtin_expect (INTERNAL_SYSCALL_ERROR_P (res, err), 0)) { - int errval = INTERNAL_SYSCALL_ERRNO (res, err); - if (buf != NULL && errval == ENOTDIR) - { - /* This can mean either the file desriptor is invalid or - /proc is not mounted. */ - struct stat64 st; - if (__fxstat64 (_STAT_VER, fd, &st) != 0) - /* errno is already set correctly. */ - goto out; - - /* If /proc is not mounted there is nothing we can do. */ - if (S_ISDIR (st.st_mode) - && (__xstat64 (_STAT_VER, "/proc/self/fd", &st) != 0 - || !S_ISDIR (st.st_mode))) - errval = ENOSYS; - } - - __set_errno (errval); + __atfct_seterrno (INTERNAL_SYSCALL_ERRNO (res, err), fd, buf); + res = -1; } - out: return res; } diff --git a/sysdeps/unix/sysv/linux/powerpc/chown.c b/sysdeps/unix/sysv/linux/powerpc/chown.c index 4b283e720c..fdcbd3683a 100644 --- a/sysdeps/unix/sysv/linux/powerpc/chown.c +++ b/sysdeps/unix/sysv/linux/powerpc/chown.c @@ -1,5 +1,5 @@ /* chown() compatibility. - Copyright (C) 1998, 2000, 2002, 2003 Free Software Foundation, Inc. + Copyright (C) 1998, 2000, 2002, 2003, 2005 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 @@ -24,6 +24,8 @@ #include <sysdep.h> #include <stdlib.h> +#include <kernel-features.h> + /* In Linux 2.1.x the chown functions have been changed. A new function lchown was introduced. The new chown now follows symlinks - the old chown and the @@ -34,58 +36,61 @@ int __chown (const char *file, uid_t owner, gid_t group) { - int err; - int old_errno; - char link[PATH_MAX+2]; - char path[2*PATH_MAX+4]; - int loopct; - size_t filelen; - static int libc_old_chown = 0 /* -1=old linux, 1=new linux, 0=unknown */; - - if (libc_old_chown == 1) - return INLINE_SYSCALL (chown, 3, __ptrvalue (file), owner, group); - - old_errno = errno; - -#ifdef __NR_lchown - if (libc_old_chown == 0) - { - err = INLINE_SYSCALL (chown, 3, __ptrvalue (file), owner, group); - if (err != -1 || errno != ENOSYS) - { - libc_old_chown = 1; - return err; - } - libc_old_chown = -1; - } -#endif - - err = __readlink (file, link, PATH_MAX+1); - if (err == -1) - { - errno = old_errno; - return __lchown(file, owner, group); - } - - filelen = strlen (file) + 1; - if (filelen > sizeof(path)) - { - errno = ENAMETOOLONG; - return -1; - } - memcpy (path, file, filelen); - - /* 'The system has an arbitrary limit...' In practise, we'll hit - ENAMETOOLONG before this, usually. */ - for (loopct = 0; loopct < 128; loopct++) - { - size_t linklen; - - if (err >= PATH_MAX+1) - { - errno = ENAMETOOLONG; - return -1; - } +#if __ASSUME_LCHOWN_SYSCALL + return INLINE_SYSCALL (chown, 3, file, owner, group); +#else + int err; + int old_errno; + char link[PATH_MAX + 2]; + char path[2 * PATH_MAX + 4]; + int loopct; + size_t filelen; + static int libc_old_chown = 0 /* -1=old linux, 1=new linux, 0=unknown */; + + if (libc_old_chown == 1) + return INLINE_SYSCALL (chown, 3, __ptrvalue (file), owner, group); + + old_errno = errno; + +# ifdef __NR_lchown + if (libc_old_chown == 0) + { + err = INLINE_SYSCALL (chown, 3, __ptrvalue (file), owner, group); + if (err != -1 || errno != ENOSYS) + { + libc_old_chown = 1; + return err; + } + libc_old_chown = -1; + } +# endif + + err = __readlink (file, link, PATH_MAX + 1); + if (err == -1) + { + __set_errno (old_errno); + return __lchown (file, owner, group); + } + + filelen = strlen (file) + 1; + if (filelen > sizeof (path)) + { + __set_errno (ENAMETOOLONG); + return -1; + } + memcpy (path, file, filelen); + + /* 'The system has an arbitrary limit...' In practise, we'll hit + ENAMETOOLONG before this, usually. */ + for (loopct = 0; loopct < 128; ++loopct) + { + size_t linklen; + + if (err >= PATH_MAX + 1) + { + __set_errno (ENAMETOOLONG); + return -1; + } link[err] = 0; /* Null-terminate string, just-in-case. */ @@ -97,28 +102,29 @@ __chown (const char *file, uid_t owner, gid_t group) { filelen = strlen (path); - while (filelen > 1 && path[filelen-1] == '/') - filelen--; - while (filelen > 0 && path[filelen-1] != '/') - filelen--; - if (filelen + linklen > sizeof(path)) + while (filelen > 1 && path[filelen - 1] == '/') + --filelen; + while (filelen > 0 && path[filelen - 1] != '/') + --filelen; + if (filelen + linklen > sizeof (path)) { errno = ENAMETOOLONG; return -1; } - memcpy (path+filelen, link, linklen); + memcpy (path + filelen, link, linklen); } - err = __readlink(path, link, PATH_MAX+1); + err = __readlink (path, link, PATH_MAX + 1); if (err == -1) - { - errno = old_errno; - return __lchown(path, owner, group); - } - } - errno = ELOOP; - return -1; + { + __set_errno (old_errno); + return __lchown (path, owner, group); + } + } + __set_errno (ELOOP); + return -1; +#endif } libc_hidden_def (__chown) diff --git a/sysdeps/unix/sysv/linux/powerpc/fchownat.c b/sysdeps/unix/sysv/linux/powerpc/fchownat.c new file mode 100644 index 0000000000..1fbae5c448 --- /dev/null +++ b/sysdeps/unix/sysv/linux/powerpc/fchownat.c @@ -0,0 +1,205 @@ +/* Copyright (C) 2005 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, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#include <errno.h> +#include <fcntl.h> +#include <stdio.h> +#include <string.h> +#include <unistd.h> +#include <limits.h> +#include <sysdep.h> +#include <stdlib.h> + +#include <kernel-features.h> + +/* + In Linux 2.1.x the chown functions have been changed. A new function lchown + was introduced. The new chown now follows symlinks - the old chown and the + new lchown do not follow symlinks. + This file emulates chown() under the old kernels. +*/ + +int +fchownat (int fd, const char *file, uid_t owner, gid_t group, int flag) +{ + if (flag & ~AT_SYMLINK_NOFOLLOW) + { + __set_errno (EINVAL); + return -1; + } + + char *buf = NULL; + + if (fd != AT_FDCWD && file[0] != '/') + { + size_t filelen = strlen (file); + static const char procfd[] = "/proc/self/fd/%d/%s"; + /* Buffer for the path name we are going to use. It consists of + - the string /proc/self/fd/ + - the file descriptor number + - the file name provided. + The final NUL is included in the sizeof. A bit of overhead + due to the format elements compensates for possible negative + numbers. */ + size_t buflen = sizeof (procfd) + sizeof (int) * 3 + filelen; + buf = alloca (buflen); + + __snprintf (buf, buflen, procfd, fd, file); + file = buf; + } + + int result; + INTERNAL_SYSCALL_DECL (err); + +#if __ASSUME_LCHOWN_SYSCALL + if (flag & AT_SYMLINK_NOFOLLOW) + result = INTERNAL_SYSCALL (lchown, err, 3, file, owner, group); + else + result = INTERNAL_SYSCALL (chown, err, 3, file, owner, group); +#else + char link[PATH_MAX + 2]; + char path[2 * PATH_MAX + 4]; + int loopct; + size_t filelen; + static int libc_old_chown = 0 /* -1=old linux, 1=new linux, 0=unknown */; + + if (libc_old_chown == 1) + { + if (flag & AT_SYMLINK_NOFOLLOW) + result = INTERNAL_SYSCALL (lchown, err, 3, __ptrvalue (file), owner, + group); + else + result = INTERNAL_SYSCALL (chown, err, 3, __ptrvalue (file), owner, + group); + goto out; + } + +# ifdef __NR_lchown + if (flag & AT_SYMLINK_NOFOLLOW) + { + result = INTERNAL_SYSCALL (lchown, err, 3, __ptrvalue (file), owner, + group); + goto out; + } + + if (libc_old_chown == 0) + { + result = INTERNAL_SYSCALL (chown, err, 3, __ptrvalue (file), owner, + group); + if (__builtin_expect (!INTERNAL_SYSCALL_ERROR_P (result, err), 1)) + return result; + if (INTERNAL_SYSCALL_ERRNO (result, err) != ENOSYS) + { + libc_old_chown = 1; + goto fail; + } + libc_old_chown = -1; + } +# else + if (flag & AT_SYMLINK_NOFOLLOW) + { + result = INTERNAL_SYSCALL (chown, err, 3, __ptrvalue (file), owner, + group); + goto out; + } +# endif + + result = __readlink (file, link, PATH_MAX + 1); + if (result == -1) + { +# ifdef __NR_lchown + result = INTERNAL_SYSCALL (lchown, err, 3, __ptrvalue (file), owner, + group); +# else + result = INTERNAL_SYSCALL (chown, err, 3, __ptrvalue (file), owner, + group); +# endif + goto out; + } + + filelen = strlen (file) + 1; + if (filelen > sizeof (path)) + { + errno = ENAMETOOLONG; + return -1; + } + memcpy (path, file, filelen); + + /* 'The system has an arbitrary limit...' In practise, we'll hit + ENAMETOOLONG before this, usually. */ + for (loopct = 0; loopct < 128; ++loopct) + { + size_t linklen; + + if (result >= PATH_MAX + 1) + { + errno = ENAMETOOLONG; + return -1; + } + + link[result] = 0; /* Null-terminate string, just-in-case. */ + + linklen = strlen (link) + 1; + + if (link[0] == '/') + memcpy (path, link, linklen); + else + { + filelen = strlen (path); + + while (filelen > 1 && path[filelen - 1] == '/') + --filelen; + while (filelen > 0 && path[filelen - 1] != '/') + --filelen; + if (filelen + linklen > sizeof (path)) + { + errno = ENAMETOOLONG; + return -1; + } + memcpy (path + filelen, link, linklen); + } + + result = __readlink (path, link, PATH_MAX + 1); + + if (result == -1) + { +# ifdef __NR_lchown + result = INTERNAL_SYSCALL (lchown, err, 3, path, owner, group); +# else + result = INTERNAL_SYSCALL (chown, err, 3, path, owner, group); +# endif + goto out; + } + } + __set_errno (ELOOP); + return -1; + + out: +#endif + + if (__builtin_expect (INTERNAL_SYSCALL_ERROR_P (result, err), 0)) + { +#if !__ASSUME_LCHOWN_SYSCALL + fail: +#endif + __atfct_seterrno (INTERNAL_SYSCALL_ERRNO (result, err), fd, buf); + result = -1; + } + + return result; +} diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/fxstatat.c b/sysdeps/unix/sysv/linux/powerpc/powerpc32/fxstatat.c new file mode 100644 index 0000000000..0f8b3135d8 --- /dev/null +++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/fxstatat.c @@ -0,0 +1 @@ +#include <sysdeps/unix/sysv/linux/i386/fxstatat.c> diff --git a/sysdeps/unix/sysv/linux/renameat.c b/sysdeps/unix/sysv/linux/renameat.c new file mode 100644 index 0000000000..31662ea053 --- /dev/null +++ b/sysdeps/unix/sysv/linux/renameat.c @@ -0,0 +1,121 @@ +/* Copyright (C) 2005 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, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#include <errno.h> +#include <fcntl.h> +#include <stdio.h> +#include <sysdep.h> + + +/* Rename the file OLD relative to OLDFD to NEW relative to NEWFD. */ +int +renameat (oldfd, old, newfd, new) + int oldfd; + const char *old; + int newfd; + const char *new; +{ + static const char procfd[] = "/proc/self/fd/%d/%s"; + char *bufold = NULL; + + if (oldfd != AT_FDCWD && old[0] != '/') + { + size_t filelen = strlen (old); + /* Buffer for the path name we are going to use. It consists of + - the string /proc/self/fd/ + - the file descriptor number + - the file name provided. + The final NUL is included in the sizeof. A bit of overhead + due to the format elements compensates for possible negative + numbers. */ + size_t buflen = sizeof (procfd) + sizeof (int) * 3 + filelen; + bufold = alloca (buflen); + + __snprintf (bufold, buflen, procfd, oldfd, old); + old = bufold; + } + + char *bufnew = NULL; + + if (newfd != AT_FDCWD && new[0] != '/') + { + size_t filelen = strlen (new); + /* Buffer for the path name we are going to use. It consists of + - the string /proc/self/fd/ + - the file descriptor number + - the file name provided. + The final NUL is included in the sizeof. A bit of overhead + due to the format elements compensates for possible negative + numbers. */ + size_t buflen = sizeof (procfd) + sizeof (int) * 3 + filelen; + bufnew = alloca (buflen); + + __snprintf (bufnew, buflen, procfd, newfd, new); + new = bufnew; + } + + INTERNAL_SYSCALL_DECL (err); + + int result = INTERNAL_SYSCALL (rename, err, 2, old, new); + + if (__builtin_expect (INTERNAL_SYSCALL_ERROR_P (result, err), 0)) + { + int errval = INTERNAL_SYSCALL_ERRNO (result, err); + if (errval == ENOTDIR && (bufnew != NULL || bufold != NULL)) + { + /* This can mean either the file descriptor is invalid or + /proc is not mounted. */ + struct stat64 st; + + if (bufnew != NULL) + { + if (__fxstat64 (_STAT_VER, newfd, &st) != 0) + /* errno is already set correctly. */ + return -1; + + /* If /proc is not mounted there is nothing we can do. */ + if (S_ISDIR (st.st_mode) + && (__xstat64 (_STAT_VER, "/proc/self/fd", &st) != 0 + || !S_ISDIR (st.st_mode))) + { + errval = ENOSYS; + goto out; + } + } + + if (bufold != NULL) + { + if (__fxstat64 (_STAT_VER, oldfd, &st) != 0) + /* errno is already set correctly. */ + return -1; + + /* If /proc is not mounted there is nothing we can do. */ + if (S_ISDIR (st.st_mode) + && (__xstat64 (_STAT_VER, "/proc/self/fd", &st) != 0 + || !S_ISDIR (st.st_mode))) + errval = ENOSYS; + } + } + + out: + __set_errno (errval); + result = -1; + } + + return result; +} diff --git a/sysdeps/unix/sysv/linux/s390/s390-32/fchownat.c b/sysdeps/unix/sysv/linux/s390/s390-32/fchownat.c new file mode 100644 index 0000000000..b95665cad3 --- /dev/null +++ b/sysdeps/unix/sysv/linux/s390/s390-32/fchownat.c @@ -0,0 +1,140 @@ +/* Copyright (C) 2005 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, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#include <errno.h> +#include <fcntl.h> +#include <stdio.h> +#include <unistd.h> + +#include <sysdep.h> +#include <sys/syscall.h> +#include <shlib-compat.h> +#include <bp-checks.h> + +#include <linux/posix_types.h> +#include "kernel-features.h" + +/* + In Linux 2.1.x the chown functions have been changed. A new function lchown + was introduced. The new chown now follows symlinks - the old chown and the + new lchown do not follow symlinks. + The new lchown function has the same number as the old chown had and the + new chown has a new number. When compiling with headers from Linux > 2.1.8x + it's impossible to run this libc with older kernels. In these cases libc + has therefore to route calls to chown to the old chown function. +*/ + +/* Running under Linux > 2.1.80. */ + +#ifdef __NR_chown32 +# if __ASSUME_32BITUIDS == 0 +/* This variable is shared with all files that need to check for 32bit + uids. */ +extern int __libc_missing_32bit_uids; +# endif +#endif /* __NR_chown32 */ + +int +fchownat (int fd, const char *file, uid_t owner, gid_t group, int flag) +{ + if (flag & ~AT_SYMLINK_NOFOLLOW) + { + __set_errno (EINVAL); + return -1; + } + + char *buf = NULL; + + if (fd != AT_FDCWD && file[0] != '/') + { + size_t filelen = strlen (file); + static const char procfd[] = "/proc/self/fd/%d/%s"; + /* Buffer for the path name we are going to use. It consists of + - the string /proc/self/fd/ + - the file descriptor number + - the file name provided. + The final NUL is included in the sizeof. A bit of overhead + due to the format elements compensates for possible negative + numbers. */ + size_t buflen = sizeof (procfd) + sizeof (int) * 3 + filelen; + buf = alloca (buflen); + + __snprintf (buf, buflen, procfd, fd, file); + file = buf; + } + + int result; + INTERNAL_SYSCALL_DECL (err); + +#if __ASSUME_32BITUIDS > 0 + result = INTERNAL_SYSCALL (chown32, err, 3, CHECK_STRING (file), owner, + group); +#else + static int __libc_old_chown; + +# ifdef __NR_chown32 + if (__libc_missing_32bit_uids <= 0) + { + if (flag & AT_SYMLINK_NOFOLLOW) + result = INTERNAL_SYSCALL (lchown32, err, 3, CHECK_STRING (file), + owner, group); + else + result = INTERNAL_SYSCALL (chown32, err, 3, CHECK_STRING (file), + owner, group); + + if (__builtin_expect (!INTERNAL_SYSCALL_ERROR_P (result, err), 1)) + return result; + if (INTERNAL_SYSCALL_ERRNO (result, err) != ENOSYS) + goto fail; + + __libc_missing_32bit_uids = 1; + } +# endif /* __NR_chown32 */ + if (((owner + 1) > (uid_t) ((__kernel_uid_t) -1U)) + || ((group + 1) > (gid_t) ((__kernel_gid_t) -1U))) + { + __set_errno (EINVAL); + return -1; + } + + if (!__libc_old_chown && (flag & AT_SYMLINK_NOFOLLOW) == 0) + { + result = INTERNAL_SYSCALL (chown, err, 3, CHECK_STRING (file), owner, + group); + + if (!INTERNAL_SYSCALL_ERROR_P (result, err)) + return result; + if (INTERNAL_SYSCALL_ERRNO (result, err) != ENOSYS) + goto fail; + + __libc_old_chown = 1; + } + + result = INTERNAL_SYSCALL (lchown, err, 3, CHECK_STRING (file), owner, + group); +#endif + + if (__builtin_expect (INTERNAL_SYSCALL_ERROR_P (result, err), 0)) + { + fail: + __atfct_seterrno (INTERNAL_SYSCALL_ERRNO (result, err), fd, buf); + result = -1; + } + + return result; +} diff --git a/sysdeps/unix/sysv/linux/s390/s390-32/fxstatat.c b/sysdeps/unix/sysv/linux/s390/s390-32/fxstatat.c new file mode 100644 index 0000000000..0f8b3135d8 --- /dev/null +++ b/sysdeps/unix/sysv/linux/s390/s390-32/fxstatat.c @@ -0,0 +1 @@ +#include <sysdeps/unix/sysv/linux/i386/fxstatat.c> diff --git a/sysdeps/unix/sysv/linux/sh/fchownat.c b/sysdeps/unix/sysv/linux/sh/fchownat.c new file mode 100644 index 0000000000..7acf7918ee --- /dev/null +++ b/sysdeps/unix/sysv/linux/sh/fchownat.c @@ -0,0 +1 @@ +#include <sysdeps/unix/sysv/linux/m68k/fchownat.c> diff --git a/sysdeps/unix/sysv/linux/sh/fxstatat.c b/sysdeps/unix/sysv/linux/sh/fxstatat.c new file mode 100644 index 0000000000..0f8b3135d8 --- /dev/null +++ b/sysdeps/unix/sysv/linux/sh/fxstatat.c @@ -0,0 +1 @@ +#include <sysdeps/unix/sysv/linux/i386/fxstatat.c> diff --git a/sysdeps/unix/sysv/linux/sparc/sparc32/fchownat.c b/sysdeps/unix/sysv/linux/sparc/sparc32/fchownat.c new file mode 100644 index 0000000000..7acf7918ee --- /dev/null +++ b/sysdeps/unix/sysv/linux/sparc/sparc32/fchownat.c @@ -0,0 +1 @@ +#include <sysdeps/unix/sysv/linux/m68k/fchownat.c> diff --git a/sysdeps/unix/sysv/linux/sparc/sparc32/fxstatat.c b/sysdeps/unix/sysv/linux/sparc/sparc32/fxstatat.c new file mode 100644 index 0000000000..0f8b3135d8 --- /dev/null +++ b/sysdeps/unix/sysv/linux/sparc/sparc32/fxstatat.c @@ -0,0 +1 @@ +#include <sysdeps/unix/sysv/linux/i386/fxstatat.c> diff --git a/sysdeps/unix/sysv/linux/sparc/sparc64/fxstatat.c b/sysdeps/unix/sysv/linux/sparc/sparc64/fxstatat.c new file mode 100644 index 0000000000..c2610b2a06 --- /dev/null +++ b/sysdeps/unix/sysv/linux/sparc/sparc64/fxstatat.c @@ -0,0 +1 @@ +#include "../../fxstatat.c" diff --git a/sysdeps/unix/sysv/linux/unlinkat.c b/sysdeps/unix/sysv/linux/unlinkat.c new file mode 100644 index 0000000000..c590e71ada --- /dev/null +++ b/sysdeps/unix/sysv/linux/unlinkat.c @@ -0,0 +1,74 @@ +/* Copyright (C) 2005 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, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#include <errno.h> +#include <fcntl.h> +#include <stddef.h> +#include <stdio.h> +#include <unistd.h> + + +/* Remove the link named NAME. */ +int +unlinkat (fd, file, flag) + int fd; + const char *file; + int flag; +{ + if (flag & ~AT_REMOVEDIR) + { + __set_errno (EINVAL); + return -1; + } + + char *buf = NULL; + + if (fd != AT_FDCWD && file[0] != '/') + { + size_t filelen = strlen (file); + static const char procfd[] = "/proc/self/fd/%d/%s"; + /* Buffer for the path name we are going to use. It consists of + - the string /proc/self/fd/ + - the file descriptor number + - the file name provided. + The final NUL is included in the sizeof. A bit of overhead + due to the format elements compensates for possible negative + numbers. */ + size_t buflen = sizeof (procfd) + sizeof (int) * 3 + filelen; + buf = alloca (buflen); + + __snprintf (buf, buflen, procfd, fd, file); + file = buf; + } + + int result; + INTERNAL_SYSCALL_DECL (err); + + if (flag & AT_REMOVEDIR) + result = INTERNAL_SYSCALL (rmdir, err, 1, file); + else + result = INTERNAL_SYSCALL (unlink, err, 1, file); + + if (__builtin_expect (INTERNAL_SYSCALL_ERROR_P (result, err), 0)) + { + __atfct_seterrno (INTERNAL_SYSCALL_ERRNO (result, err), fd, buf); + result = -1; + } + + return result; +} diff --git a/sysdeps/unix/sysv/linux/wordsize-64/fxstatat.c b/sysdeps/unix/sysv/linux/wordsize-64/fxstatat.c new file mode 100644 index 0000000000..70e73571f7 --- /dev/null +++ b/sysdeps/unix/sysv/linux/wordsize-64/fxstatat.c @@ -0,0 +1,78 @@ +/* Copyright (C) 2005 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, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +/* Ho hum, since fxstatat == fxstatat64 we must get rid of the + prototype or gcc will complain since they don't strictly match. */ +#define __fxstatat64 __fxstatat64_disable + +#include <errno.h> +#include <fcntl.h> +#include <stddef.h> +#include <stdio.h> +#include <sys/stat.h> + +#include <sysdep.h> +#include <sys/syscall.h> +#include <bp-checks.h> + +/* Get information about the file NAME relative to FD in ST. */ +int +__fxstatat (int vers, int fd, const char *file, struct stat *st, int flag) +{ + if ((vers != _STAT_VER_KERNEL && vers != _STAT_VER_LINUX) + || (flag & ~AT_SYMLINK_NOFOLLOW) != 0) + { + __set_errno (EINVAL); + return -1; + } + + char *buf = NULL; + + if (fd != AT_FDCWD && file[0] != '/') + { + size_t filelen = strlen (file); + static const char procfd[] = "/proc/self/fd/%d/%s"; + /* Buffer for the path name we are going to use. It consists of + - the string /proc/self/fd/ + - the file descriptor number + - the file name provided. + The final NUL is included in the sizeof. A bit of overhead + due to the format elements compensates for possible negative + numbers. */ + size_t buflen = sizeof (procfd) + sizeof (int) * 3 + filelen; + buf = alloca (buflen); + + __snprintf (buf, buflen, procfd, fd, file); + file = buf; + } + + INTERNAL_SYSCALL_DECL (err); + int res; + + if (flag & AT_SYMLINK_NOFOLLOW) + res = INTERNAL_SYSCALL (lstat, err, 2, file, CHECK_1 (st)); + else + res = INTERNAL_SYSCALL (stat, err, 2, file, CHECK_1 (st)); + + if (__builtin_expect (INTERNAL_SYSCALL_ERROR_P (res, err), 0)) + __atfct_seterrno (INTERNAL_SYSCALL_ERRNO (res, err), fd, buf); + + return res; +} +#undef __fxstatat64 +strong_alias (__fxstatat, __fxstatat64); diff --git a/sysdeps/unix/sysv/linux/wordsize-64/fxstatat64.c b/sysdeps/unix/sysv/linux/wordsize-64/fxstatat64.c new file mode 100644 index 0000000000..05e7f413bb --- /dev/null +++ b/sysdeps/unix/sysv/linux/wordsize-64/fxstatat64.c @@ -0,0 +1 @@ +/* fxstatat64 is in fxstatat.c */ |