diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/i386/chown.c')
| -rw-r--r-- | sysdeps/unix/sysv/linux/i386/chown.c | 46 |
1 files changed, 45 insertions, 1 deletions
diff --git a/sysdeps/unix/sysv/linux/i386/chown.c b/sysdeps/unix/sysv/linux/i386/chown.c index 9ab03e3a7c..9addfd0598 100644 --- a/sysdeps/unix/sysv/linux/i386/chown.c +++ b/sysdeps/unix/sysv/linux/i386/chown.c @@ -1,4 +1,4 @@ -/* Copyright (C) 1998, 1999 Free Software Foundation, Inc. +/* Copyright (C) 1998, 1999, 2000 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 @@ -23,6 +23,9 @@ #include <sys/syscall.h> #include <kernel-features.h> +#include <linux/posix_types.h> + + /* In Linux 2.1.x the chown functions have been changed. A new function lchown @@ -39,6 +42,15 @@ extern int __syscall_chown (const char *__file, #if defined __NR_lchown || __ASSUME_LCHOWN_SYSCALL > 0 /* Running under Linux > 2.1.80. */ +# ifdef __NR_chown32 +extern int __syscall_chown32 (const char *__file, + __kernel_uid32_t owner, __kernel_gid32_t group); +# 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 __real_chown (const char *file, uid_t owner, gid_t group) @@ -50,6 +62,20 @@ __real_chown (const char *file, uid_t owner, gid_t group) if (!__libc_old_chown) { int saved_errno = errno; +# ifdef __NR_chown32 + if (!__libc_missing_32bit_uids) + { + int result; + int saved_errno = errno; + + result = INLINE_SYSCALL (chown32, 3, file, owner, group); + if (result == 0 || errno != ENOSYS) + return result; + + __set_errno (saved_errno); + __libc_missing_32bit_uids = 1; + } +# endif /* __NR_chown32 */ result = INLINE_SYSCALL (chown, 3, file, owner, group); if (result >= 0 || errno != ENOSYS) @@ -60,7 +86,25 @@ __real_chown (const char *file, uid_t owner, gid_t group) } return __lchown (file, owner, group); +# elif __ASSUME_32BITUIDS + /* This implies __ASSUME_LCHOWN_SYSCALL. */ + return INLINE_SYSCALL (chown32, 3, file, owner, group); # else + /* !__ASSUME_32BITUIDS && ASSUME_LCHOWN_SYSCALL */ +# ifdef __NR_chown32 + if (!__libc_missing_32bit_uids) + { + int result; + int saved_errno = errno; + + result = INLINE_SYSCALL (chown32, 3, file, owner, group); + if (result == 0 || errno != ENOSYS) + return result; + + __set_errno (saved_errno); + __libc_missing_32bit_uids = 1; + } +# endif /* __NR_chown32 */ return INLINE_SYSCALL (chown, 3, file, owner, group); # endif } |