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* sysdeps/unix/sysv/linux/renameat.c (__atfct_seterrno_2): Correcty

Browse Source 
return EBADF for non-existing file descriptors.
	* sysdeps/unix/sysv/linux/openat.c (__atfct_seterrno): Likewise.
	* io/tst-openat.c (do_test): Add some more tests.
	* io/tst-faccessat.c (do_test): Likewise.
	* io/tst-renameat.c (do_test): Likewise.
	* io/tst-fstatat.c (do_test): Likewise.
	* io/tst-fchmodat.c (do_test): Likewise.
	* io/tst-fchownat.c (do_test): Likewise.
This commit is contained in:
Ulrich Drepper 2006-01-22 00:57:24 +00:00
parent b2680b0331
commit bdc7e223aa
9 changed files with 378 additions and 25 deletions
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12
ChangeLog
View File

@ -1,3 +1,15 @@
2006-01-21 Ulrich Drepper <drepper@redhat.com>
* sysdeps/unix/sysv/linux/renameat.c (__atfct_seterrno_2): Correcty
return EBADF for non-existing file descriptors.
* sysdeps/unix/sysv/linux/openat.c (__atfct_seterrno): Likewise.
* io/tst-openat.c (do_test): Add some more tests.
* io/tst-faccessat.c (do_test): Likewise.
* io/tst-renameat.c (do_test): Likewise.
* io/tst-fstatat.c (do_test): Likewise.
* io/tst-fchmodat.c (do_test): Likewise.
* io/tst-fchownat.c (do_test): Likewise.
2006-01-21 Roland McGrath <roland@redhat.com>
* sysdeps/unix/sysv/linux/faccessat.c: Move RESULT defn inside block.

59
io/tst-faccessat.c
View File

@ -98,6 +98,20 @@ do_test (void)
write (fd, "hello", 5);
puts ("file created");
/* Before closing the file, try using this file descriptor to open
another file. This must fail. */
if (faccessat (fd, "should-not-work", F_OK, AT_EACCESS) != -1)
{
puts ("faccessat using descriptor for normal file worked");
return 1;
}
if (errno != ENOTDIR)
{
puts ("\
error for faccessat using descriptor for normal file not ENOTDIR ");
return 1;
}
close (fd);
int result = 0;
@ -141,6 +155,39 @@ do_test (void)
result = 1;
}
/* Create a file descriptor which is closed again right away. */
int dir_fd2 = dup (dir_fd);
if (dir_fd2 == -1)
{
puts ("dup failed");
return 1;
}
close (dir_fd2);
/* With the file descriptor closed the next call must fail. */
if (faccessat (dir_fd2, "some-file", F_OK, AT_EACCESS) != -1)
{
puts ("faccessat using closed descriptor succeeded");
return 1;
}
if (errno != EBADF)
{
puts ("faccessat using closed descriptor did not set EBADF");
return 1;
}
/* Same with a non-existing file. */
if (faccessat (dir_fd2, "non-existing-file", F_OK, AT_EACCESS) != -1)
{
puts ("2nd faccessat using closed descriptor succeeded");
return 1;
}
if (errno != EBADF)
{
puts ("2nd faccessat using closed descriptor did not set EBADF");
return 1;
}
if (unlinkat (dir_fd, "some-file", 0) != 0)
{
puts ("unlinkat failed");
@ -149,5 +196,17 @@ do_test (void)
close (dir_fd);
fd = faccessat (-1, "some-file", F_OK, AT_EACCESS);
if (fd != -1)
{
puts ("faccessat using -1 descriptor succeeded");
return 1;
}
if (errno != EBADF)
{
puts ("faccessat using -1 descriptor did not set EBADF");
return 1;
}
return result;
}

45
io/tst-fchmodat.c
View File

@ -107,6 +107,20 @@ do_test (void)
return 1;
}
/* Before closing the file, try using this file descriptor to open
another file. This must fail. */
if (fchmodat (fd, "some-file", 0400, 0) != -1)
{
puts ("fchmodat using descriptor for normal file worked");
return 1;
}
if (errno != ENOTDIR)
{
puts ("\
error for fchmodat using descriptor for normal file not ENOTDIR ");
return 1;
}
close (fd);
if ((st1.st_mode & 0777) != 0644)
@ -140,7 +154,38 @@ do_test (void)
return 1;
}
/* Create a file descriptor which is closed again right away. */
int dir_fd2 = dup (dir_fd);
if (dir_fd2 == -1)
{
puts ("dup failed");
return 1;
}
close (dir_fd2);
if (fchmodat (dir_fd2, "some-file", 0400, 0) != -1)
{
puts ("fchmodat using closed descriptor worked");
return 1;
}
if (errno != EBADF)
{
puts ("error for fchmodat using closed descriptor not EBADF ");
return 1;
}
close (dir_fd);
if (fchmodat (-1, "some-file", 0400, 0) != -1)
{
puts ("fchmodat using invalid descriptor worked");
return 1;
}
if (errno != EBADF)
{
puts ("error for fchmodat using invalid descriptor not EBADF ");
return 1;
}
return 0;
}

45
io/tst-fchownat.c
View File

@ -112,6 +112,20 @@ do_test (void)
return 1;
}
/* Before closing the file, try using this file descriptor to open
another file. This must fail. */
if (fchownat (fd, "some-file", 1, 1, 0) != -1)
{
puts ("fchownat using descriptor for normal file worked");
return 1;
}
if (errno != ENOTDIR)
{
puts ("\
error for fchownat using descriptor for normal file not ENOTDIR ");
return 1;
}
close (fd);
if (fchownat (dir_fd, "some-file", st1.st_uid + 1, st1.st_gid + 1, 0) != 0)
@ -139,7 +153,38 @@ do_test (void)
return 1;
}
/* Create a file descriptor which is closed again right away. */
int dir_fd2 = dup (dir_fd);
if (dir_fd2 == -1)
{
puts ("dup failed");
return 1;
}
close (dir_fd2);
if (fchownat (dir_fd2, "some-file", 1, 1, 0) != -1)
{
puts ("fchownat using closed descriptor worked");
return 1;
}
if (errno != EBADF)
{
puts ("error for fchownat using closed descriptor not EBADF ");
return 1;
}
close (dir_fd);
if (fchownat (-1, "some-file", 1, 1, 0) != -1)
{
puts ("fchownat using invalid descriptor worked");
return 1;
}
if (errno != EBADF)
{
puts ("error for fchownat using invalid descriptor not EBADF ");
return 1;
}
return 0;
}

45
io/tst-fstatat.c
View File

@ -97,6 +97,20 @@ do_test (void)
puts ("file created");
struct stat64 st1;
/* Before closing the file, try using this file descriptor to open
another file. This must fail. */
if (fstatat64 (fd, "some-file", &st1, 0) != -1)
{
puts ("fstatatat using descriptor for normal file worked");
return 1;
}
if (errno != ENOTDIR)
{
puts ("error for fstatat using descriptor for normal file not ENOTDIR ");
return 1;
}
if (fstat64 (fd, &st1) != 0)
{
puts ("fstat64 failed");
@ -137,7 +151,38 @@ do_test (void)
return 1;
}
/* Create a file descriptor which is closed again right away. */
int dir_fd2 = dup (dir_fd);
if (dir_fd2 == -1)
{
puts ("dup failed");
return 1;
}
close (dir_fd2);
if (fstatat64 (dir_fd2, "some-file", &st1, 0) != -1)
{
puts ("fstatat64 using closed descriptor worked");
return 1;
}
if (errno != EBADF)
{
puts ("error for fstatat using closed descriptor not EBADF ");
return 1;
}
close (dir_fd);
if (fstatat64 (-1, "some-file", &st1, 0) != -1)
{
puts ("fstatat64 using invalid descriptor worked");
return 1;
}
if (errno != EBADF)
{
puts ("error for fstatat using invalid descriptor not EBADF ");
return 1;
}
return 0;
}

40
io/tst-openat.c
View File

@ -94,6 +94,21 @@ do_test (void)
return 1;
}
write (fd, "hello", 5);
/* Before closing the file, try using this file descriptor to open
another file. This must fail. */
int fd2 = openat (fd, "should-not-work", O_CREAT|O_RDWR, 0666);
if (fd2 != -1)
{
puts ("openat using descriptor for normal file worked");
return 1;
}
if (errno != ENOTDIR)
{
puts ("error for openat using descriptor for normal file not ENOTDIR ");
return 1;
}
close (fd);
puts ("file created");
@ -165,5 +180,30 @@ do_test (void)
close (dir_fd);
close (cwdfd);
/* With the file descriptor closed the next call must fail. */
fd = openat (dir_fd, "some-file", O_CREAT|O_RDWR|O_EXCL, 0666);
if (fd != -1)
{
puts ("openat using closed descriptor succeeded");
return 1;
}
if (errno != EBADF)
{
puts ("openat using closed descriptor did not set EBADF");
return 1;
}
fd = openat (-1, "some-file", O_CREAT|O_RDWR|O_EXCL, 0666);
if (fd != -1)
{
puts ("openat using -1 descriptor succeeded");
return 1;
}
if (errno != EBADF)
{
puts ("openat using -1 descriptor did not set EBADF");
return 1;
}
return 0;
}

76
io/tst-renameat.c
View File

@ -103,6 +103,29 @@ do_test (void)
return 1;
}
/* Using a descriptor for a normal file must fail. */
if (renameat (fd, "some-file", dir_fd, "another-file") == 0)
{
puts ("renameat with normal file descriptor succeeded");
return 1;
}
if (errno != ENOTDIR)
{
puts ("error for renameat with normal file descriptor not ENOTDIR");
return 1;
}
if (renameat (dir_fd, "some-file", fd, "another-file") == 0)
{
puts ("2nd renameat with normal file descriptor succeeded");
return 1;
}
if (errno != ENOTDIR)
{
puts ("error for 2nd renameat with normal file descriptor not ENOTDIR");
return 1;
}
close (fd);
if (renameat (dir_fd, "some-file", dir_fd, "another-file") != 0)
@ -137,12 +160,65 @@ do_test (void)
return 1;
}
/* Create a file descriptor which is closed again right away. */
int dir_fd2 = dup (dir_fd);
if (dir_fd2 == -1)
{
puts ("dup failed");
return 1;
}
close (dir_fd2);
if (renameat (dir_fd2, "another-file", dir_fd, "some-file") == 0)
{
puts ("renameat with closed file descriptor succeeded");
return 1;
}
if (errno != EBADF)
{
puts ("error for renameat with closed file descriptor not EBADF");
return 1;
}
if (renameat (dir_fd, "another-file", dir_fd2, "some-file") == 0)
{
puts ("2nd renameat with closed file descriptor succeeded");
return 1;
}
if (errno != EBADF)
{
puts ("error for 2nd renameat with closed file descriptor not EBADF");
return 1;
}
if (unlinkat (dir_fd, "another-file", 0) != 0)
{
puts ("unlinkat failed");
return 1;
}
if (renameat (-1, "another-file", dir_fd, "some-file") == 0)
{
puts ("renameat with invalid file descriptor succeeded");
return 1;
}
if (errno != EBADF)
{
puts ("error for renameat with invalid file descriptor not EBADF");
return 1;
}
if (renameat (dir_fd, "another-file", -1, "some-file") == 0)
{
puts ("2nd renameat with invalid file descriptor succeeded");
return 1;
}
if (errno != EBADF)
{
puts ("error for 2nd renameat with invalid file descriptor not EBADF");
return 1;
}
close (dir_fd);
return 0;

2
sysdeps/unix/sysv/linux/openat.c
View File

@ -60,7 +60,7 @@ __atfct_seterrno (int errval, int fd, const char *buf)
file descriptor number. */
*(char *) strchr (buf + sizeof "/proc/self/fd", '/') = '\0';
int e = __xstat64 (_STAT_VER, buf, &st);
int e = __lxstat64 (_STAT_VER, buf, &st);
if ((e == -1 && errno == ENOENT)
||(e == 0 && !S_ISLNK (st.st_mode)))
errval = EBADF;

79
sysdeps/unix/sysv/linux/renameat.c
View File

@ -30,39 +30,70 @@ attribute_hidden
__atfct_seterrno_2 (int errval, int fd1, const char *buf1, int fd2,
const char *buf2)
{
if (errval == ENOTDIR && (buf1 != NULL || buf2 != NULL))
if (buf1 != NULL || buf2 != NULL)
{
/* This can mean either the file descriptor is invalid or
/proc is not mounted. */
struct stat64 st;
if (buf1 != NULL)
if (errval == ENOTDIR)
{
if (__fxstat64 (_STAT_VER, fd1, &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)))
/* This can mean either the file descriptor is invalid or
/proc is not mounted. */
if (buf1 != NULL)
{
errval = ENOSYS;
goto out;
if (__fxstat64 (_STAT_VER, fd1, &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;
goto out;
}
}
if (buf2 != NULL)
{
if (__fxstat64 (_STAT_VER, fd2, &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;
}
}
if (buf2 != NULL)
else if (errval == ENOENT)
{
if (__fxstat64 (_STAT_VER, fd2, &st) != 0)
/* errno is already set correctly. */
return;
/* This could mean the file descriptor is not valid. We
reuse BUF for the stat call. Find the slash after the
file descriptor number. */
if (buf1 != NULL)
{
*(char *) strchr (buf1 + sizeof "/proc/self/fd", '/') = '\0';
/* 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;
int e = __lxstat64 (_STAT_VER, buf1, &st);
if ((e == -1 && errno == ENOENT)
||(e == 0 && !S_ISLNK (st.st_mode)))
{
errval = EBADF;
goto out;
}
}
if (buf2 != NULL)
{
*(char *) strchr (buf2 + sizeof "/proc/self/fd", '/') = '\0';
int e = __lxstat64 (_STAT_VER, buf2, &st);
if ((e == -1 && errno == ENOENT)
||(e == 0 && !S_ISLNK (st.st_mode)))
errval = EBADF;
}
}
}