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Diffstat (limited to 'sysdeps/unix/sysv/linux/openat.c')
-rw-r--r--sysdeps/unix/sysv/linux/openat.c47
1 files changed, 27 insertions, 20 deletions
diff --git a/sysdeps/unix/sysv/linux/openat.c b/sysdeps/unix/sysv/linux/openat.c
index a89f172b62..d5d976cbc4 100644
--- a/sysdeps/unix/sysv/linux/openat.c
+++ b/sysdeps/unix/sysv/linux/openat.c
@@ -29,6 +29,30 @@
#ifndef OPENAT
# define OPENAT openat
# define MORE_OFLAGS 0
+
+
+void
+attribute_hidden
+__atfct_seterrno (int errval, int fd, const char *buf)
+{
+ if (buf != NULL && errval == ENOTDIR)
+ {
+ /* This can mean either the file descriptor is invalid or
+ /proc is not mounted. */
+ struct stat64 st;
+ if (__fxstat64 (_STAT_VER, fd, &st) != 0)
+ /* errno is already set correctly. */
+ return;
+
+ /* If /proc is not mounted there is nothing we can do. */
+ if (S_ISDIR (st.st_mode)
+ && (__xstat64 (_STAT_VER, "/proc/self/fd", &st) != 0
+ || !S_ISDIR (st.st_mode)))
+ errval = ENOSYS;
+ }
+
+ __set_errno (errval);
+}
#endif
/* Open FILE with access OFLAG. Interpret relative paths relative to
@@ -42,7 +66,7 @@ OPENAT (fd, file, oflag)
{
char *buf = NULL;
- if (file[0] != '/')
+ if (fd != AT_FDCWD && file[0] != '/')
{
size_t filelen = strlen (file);
static const char procfd[] = "/proc/self/fd/%d/%s";
@@ -85,26 +109,9 @@ OPENAT (fd, file, oflag)
if (__builtin_expect (INTERNAL_SYSCALL_ERROR_P (res, err), 0))
{
- int errval = INTERNAL_SYSCALL_ERRNO (res, err);
- if (buf != NULL && errval == ENOTDIR)
- {
- /* This can mean either the file desriptor is invalid or
- /proc is not mounted. */
- struct stat64 st;
- if (__fxstat64 (_STAT_VER, fd, &st) != 0)
- /* errno is already set correctly. */
- goto out;
-
- /* If /proc is not mounted there is nothing we can do. */
- if (S_ISDIR (st.st_mode)
- && (__xstat64 (_STAT_VER, "/proc/self/fd", &st) != 0
- || !S_ISDIR (st.st_mode)))
- errval = ENOSYS;
- }
-
- __set_errno (errval);
+ __atfct_seterrno (INTERNAL_SYSCALL_ERRNO (res, err), fd, buf);
+ res = -1;
}
- out:
return res;
}