diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/powerpc/chown.c')
-rw-r--r-- | sysdeps/unix/sysv/linux/powerpc/chown.c | 90 |
1 files changed, 1 insertions, 89 deletions
diff --git a/sysdeps/unix/sysv/linux/powerpc/chown.c b/sysdeps/unix/sysv/linux/powerpc/chown.c index 33bb4921c6..be6a828f9b 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, 2005 Free Software Foundation, Inc. + Copyright (C) 1998-2012 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 @@ -35,95 +35,7 @@ int __chown (const char *file, uid_t owner, gid_t group) { -#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. */ - - 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); - } - - err = __readlink (path, link, PATH_MAX + 1); - - if (err == -1) - { - __set_errno (old_errno); - return __lchown (path, owner, group); - } - } - __set_errno (ELOOP); - return -1; -#endif } libc_hidden_def (__chown) |