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Diffstat (limited to 'sysdeps/unix/sysv/linux/powerpc/chown.c')
-rw-r--r--sysdeps/unix/sysv/linux/powerpc/chown.c90
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)