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(__atfct_seterrno): Correcty return EBADF for non-existing file descriptors.

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This commit is contained in:
Ulrich Drepper
2006-01-22 00:05:30 +00:00
parent c545373264
commit b2680b0331
1 changed files with 27 additions and 11 deletions
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20
sysdeps/unix/sysv/linux/openat.c
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@ -35,11 +35,14 @@ void
attribute_hidden attribute_hidden
__atfct_seterrno (int errval, int fd, const char *buf) __atfct_seterrno (int errval, int fd, const char *buf)
{ {
if (buf != NULL && errval == ENOTDIR) if (buf != NULL)
{
struct stat64 st;
if (errval == ENOTDIR)
{ {
/* This can mean either the file descriptor is invalid or /* This can mean either the file descriptor is invalid or
/proc is not mounted. */ /proc is not mounted. */
struct stat64 st;
if (__fxstat64 (_STAT_VER, fd, &st) != 0) if (__fxstat64 (_STAT_VER, fd, &st) != 0)
/* errno is already set correctly. */ /* errno is already set correctly. */
return; return;
@ -50,6 +53,19 @@ __atfct_seterrno (int errval, int fd, const char *buf)
|| !S_ISDIR (st.st_mode))) || !S_ISDIR (st.st_mode)))
errval = ENOSYS; errval = ENOSYS;
} }
else if (errval == ENOENT)
{
/* This could mean the file descriptor is not valid. We
reuse BUF for the stat call. Find the slash after the
file descriptor number. */
*(char *) strchr (buf + sizeof "/proc/self/fd", '/') = '\0';
int e = __xstat64 (_STAT_VER, buf, &st);
if ((e == -1 && errno == ENOENT)
||(e == 0 && !S_ISLNK (st.st_mode)))
errval = EBADF;
}
}
__set_errno (errval); __set_errno (errval);
} }