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Diffstat (limited to 'sysdeps/unix/sysv/linux/powerpc/fchownat.c')
-rw-r--r--sysdeps/unix/sysv/linux/powerpc/fchownat.c139
1 files changed, 13 insertions, 126 deletions
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
}