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authorUlrich Drepper <drepper@gmail.com>2011-08-09 09:57:55 -0400
committerUlrich Drepper <drepper@gmail.com>2011-08-09 09:57:55 -0400
commitc55fbd1ea768f9fdef34a01377702c0d72cbc213 (patch)
tree0e67d339ad240756843292384535c40cad03df95 /dirent/scandir.c
parent879165f25a1a6b13995e43c11e88b1a21b6f101e (diff)
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Implement scandirat function
Diffstat (limited to 'dirent/scandir.c')
-rw-r--r--dirent/scandir.c122
1 files changed, 3 insertions, 119 deletions
diff --git a/dirent/scandir.c b/dirent/scandir.c
index e90b942..3f69a8d 100644
--- a/dirent/scandir.c
+++ b/dirent/scandir.c
@@ -18,44 +18,14 @@
02111-1307 USA. */
#include <dirent.h>
-#include <stdlib.h>
-#include <string.h>
-#include <errno.h>
-#include <bits/libc-lock.h>
+#include <fcntl.h>
#ifndef SCANDIR
# define SCANDIR scandir
-# define READDIR __readdir
+# define SCANDIRAT scandirat
# define DIRENT_TYPE struct dirent
#endif
-#ifndef SCANDIR_CANCEL
-# define SCANDIR_CANCEL
-struct scandir_cancel_struct
-{
- DIR *dp;
- void *v;
- size_t cnt;
-};
-
-# ifndef SKIP_SCANDIR_CANCEL
-void
-__scandir_cancel_handler (void *arg)
-{
- struct scandir_cancel_struct *cp = arg;
- size_t i;
- void **v = cp->v;
-
- for (i = 0; i < cp->cnt; ++i)
- free (v[i]);
- free (v);
- (void) __closedir (cp->dp);
-}
-# else
-extern void __scandir_cancel_handler (void *arg);
-# endif
-#endif
-
int
SCANDIR (dir, namelist, select, cmp)
@@ -64,91 +34,5 @@ SCANDIR (dir, namelist, select, cmp)
int (*select) (const DIRENT_TYPE *);
int (*cmp) (const DIRENT_TYPE **, const DIRENT_TYPE **);
{
- DIR *dp = __opendir (dir);
- DIRENT_TYPE **v = NULL;
- size_t vsize = 0;
- struct scandir_cancel_struct c;
- DIRENT_TYPE *d;
- int save;
-
- if (dp == NULL)
- return -1;
-
- save = errno;
- __set_errno (0);
-
- c.dp = dp;
- c.v = NULL;
- c.cnt = 0;
- __libc_cleanup_push (__scandir_cancel_handler, &c);
-
- while ((d = READDIR (dp)) != NULL)
- {
- int use_it = select == NULL;
-
- if (! use_it)
- {
- use_it = select (d);
- /* The select function might have changed errno. It was
- zero before and it need to be again to make the latter
- tests work. */
- __set_errno (0);
- }
-
- if (use_it)
- {
- DIRENT_TYPE *vnew;
- size_t dsize;
-
- /* Ignore errors from select or readdir */
- __set_errno (0);
-
- if (__builtin_expect (c.cnt == vsize, 0))
- {
- DIRENT_TYPE **new;
- if (vsize == 0)
- vsize = 10;
- else
- vsize *= 2;
- new = (DIRENT_TYPE **) realloc (v, vsize * sizeof (*v));
- if (new == NULL)
- break;
- v = new;
- c.v = (void *) v;
- }
-
- dsize = &d->d_name[_D_ALLOC_NAMLEN (d)] - (char *) d;
- vnew = (DIRENT_TYPE *) malloc (dsize);
- if (vnew == NULL)
- break;
-
- v[c.cnt++] = (DIRENT_TYPE *) memcpy (vnew, d, dsize);
- }
- }
-
- if (__builtin_expect (errno, 0) != 0)
- {
- save = errno;
-
- while (c.cnt > 0)
- free (v[--c.cnt]);
- free (v);
- c.cnt = -1;
- }
- else
- {
- /* Sort the list if we have a comparison function to sort with. */
- if (cmp != NULL)
- qsort (v, c.cnt, sizeof (*v),
- (int (*) (const void *, const void *)) cmp);
-
- *namelist = v;
- }
-
- __libc_cleanup_pop (0);
-
- (void) __closedir (dp);
- __set_errno (save);
-
- return c.cnt;
+ return SCANDIRAT (AT_FDCWD, dir, namelist, select, cmp);
}