diff options
Diffstat (limited to 'sysdeps/unix')
-rw-r--r-- | sysdeps/unix/sysv/linux/i386/fchownat.c | 120 | ||||
-rw-r--r-- | sysdeps/unix/sysv/linux/powerpc/fchownat.c | 139 | ||||
-rw-r--r-- | sysdeps/unix/sysv/linux/s390/s390-32/fchownat.c | 160 | ||||
-rw-r--r-- | sysdeps/unix/sysv/linux/sh/fchownat.c | 141 | ||||
-rw-r--r-- | sysdeps/unix/sysv/linux/sparc/sparc32/fchownat.c | 2 |
5 files changed, 33 insertions, 529 deletions
diff --git a/sysdeps/unix/sysv/linux/i386/fchownat.c b/sysdeps/unix/sysv/linux/i386/fchownat.c index db5481705a..34acf10c27 100644 --- a/sysdeps/unix/sysv/linux/i386/fchownat.c +++ b/sysdeps/unix/sysv/linux/i386/fchownat.c @@ -30,33 +30,6 @@ #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) @@ -105,92 +78,33 @@ fchownat (int fd, const char *file, uid_t owner, gid_t group, int flag) file = buf; } +# if __ASSUME_32BITUIDS > 0 + /* This implies __ASSUME_LCHOWN_SYSCALL. */ 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 (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 (!__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))) + if (__builtin_expect (INTERNAL_SYSCALL_ERROR_P (result, err), 0)) { - __set_errno (EINVAL); + __atfct_seterrno (INTERNAL_SYSCALL_ERRNO (result, err), fd, buf); 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); + /* Don't inline the rest to avoid unnecessary code duplication. */ + if (flag & AT_SYMLINK_NOFOLLOW) + result = __lchown (file, owner, group); + else + result = __chown (file, owner, group); + if (result < 0) + __atfct_seterrno (errno, fd, buf); # endif - if (__builtin_expect (INTERNAL_SYSCALL_ERROR_P (result, err), 0)) - goto fail; - return result; - fail: - __atfct_seterrno (INTERNAL_SYSCALL_ERRNO (result, err), fd, buf); - return -1; #endif } diff --git a/sysdeps/unix/sysv/linux/powerpc/fchownat.c b/sysdeps/unix/sysv/linux/powerpc/fchownat.c index f1b9b4db4a..67c570648a 100644 --- a/sysdeps/unix/sysv/linux/powerpc/fchownat.c +++ b/sysdeps/unix/sysv/linux/powerpc/fchownat.c @@ -1,4 +1,4 @@ -/* Copyright (C) 2005 Free Software Foundation, Inc. +/* Copyright (C) 2005, 2006 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 @@ -81,143 +81,30 @@ fchownat (int fd, const char *file, uid_t owner, gid_t group, int flag) file = buf; } +# if __ASSUME_LCHOWN_SYSCALL 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 -1; } +# else + /* Don't inline the rest to avoid unnecessary code duplication. */ + if (flag & AT_SYMLINK_NOFOLLOW) + result = __lchown (file, owner, group); + else + result = __chown (file, owner, group); + if (result < 0) + __atfct_seterrno (errno, fd, buf); +# endif return result; + #endif } diff --git a/sysdeps/unix/sysv/linux/s390/s390-32/fchownat.c b/sysdeps/unix/sysv/linux/s390/s390-32/fchownat.c index abc06b07d9..dfed76aeb4 100644 --- a/sysdeps/unix/sysv/linux/s390/s390-32/fchownat.c +++ b/sysdeps/unix/sysv/linux/s390/s390-32/fchownat.c @@ -1,159 +1 @@ -/* Copyright (C) 2005, 2006 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 <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) -{ - int result; - -#ifdef __NR_fchownat -# ifndef __ASSUME_ATFCTS - if (__have_atfcts >= 0) -# endif - { - result = INLINE_SYSCALL (fchownat, 5, fd, file, owner, group, flag); -# ifndef __ASSUME_ATFCTS - if (result == -1 && errno == ENOSYS) - __have_atfcts = -1; - else -# endif - return result; - } -#endif - -#ifndef __ASSUME_ATFCTS - 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); - -# 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; -#endif -} +#include <sysdeps/unix/sysv/linux/i386/fchownat.c> diff --git a/sysdeps/unix/sysv/linux/sh/fchownat.c b/sysdeps/unix/sysv/linux/sh/fchownat.c index 61df787c2a..dfed76aeb4 100644 --- a/sysdeps/unix/sysv/linux/sh/fchownat.c +++ b/sysdeps/unix/sysv/linux/sh/fchownat.c @@ -1,140 +1 @@ -/* Copyright (C) 2005, 2006 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 <string.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) -{ - int result; - -#ifdef __NR_fchownat -# ifndef __ASSUME_ATFCTS - if (__have_atfcts >= 0) -# endif - { - result = INLINE_SYSCALL (fchownat, 5, fd, file, owner, group, flag); -# ifndef __ASSUME_ATFCTS - if (result == -1 && errno == ENOSYS) - __have_atfcts = -1; - else -# endif - return result; - } -#endif - -#ifndef __ASSUME_ATFCTS - 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); - -# 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; -#endif -} +#include <sysdeps/unix/sysv/linux/i386/fchownat.c> diff --git a/sysdeps/unix/sysv/linux/sparc/sparc32/fchownat.c b/sysdeps/unix/sysv/linux/sparc/sparc32/fchownat.c index 7ba5bf44a1..dfed76aeb4 100644 --- a/sysdeps/unix/sysv/linux/sparc/sparc32/fchownat.c +++ b/sysdeps/unix/sysv/linux/sparc/sparc32/fchownat.c @@ -1 +1 @@ -#include <sysdeps/unix/sysv/linux/sh/fchownat.c> +#include <sysdeps/unix/sysv/linux/i386/fchownat.c> |