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authorEric Andersen <andersen@codepoet.org>2001-03-19 22:49:36 +0000
committerEric Andersen <andersen@codepoet.org>2001-03-19 22:49:36 +0000
commit8bdc62b0890760ebe6ddd70f2841b5136fbf7cb0 (patch)
tree4c1d6888d0bc4b3e1ce914faccd5063c77b41a1d /libc/misc/dirent/readdir.c
parent025490cb327377cf26993dfd839fcd0c81f5ce7e (diff)
Move the dirent stuff. I suppose it is system dependant, but then
it really should be grouped together too. And it needed to be grouped more then it needed to be in sysdeps/linux/common
Diffstat (limited to 'libc/misc/dirent/readdir.c')
-rw-r--r--libc/misc/dirent/readdir.c69
1 files changed, 69 insertions, 0 deletions
diff --git a/libc/misc/dirent/readdir.c b/libc/misc/dirent/readdir.c
new file mode 100644
index 000000000..a755ed24d
--- /dev/null
+++ b/libc/misc/dirent/readdir.c
@@ -0,0 +1,69 @@
+#include <errno.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <dirent.h>
+#include "dirstream.h"
+
+extern int getdents __P ((unsigned int fd, struct dirent *dirp, unsigned int count));
+
+
+struct dirent *readdir(DIR * dir)
+{
+ int result;
+ struct dirent *de;
+
+ if (!dir) {
+ errno = EBADF;
+ return NULL;
+ }
+
+ /* Are we running an old kernel? */
+ if (dir->dd_getdents == no_getdents) {
+ abort();
+ }
+
+ if (dir->dd_size <= dir->dd_nextloc) {
+ /* read dir->dd_max bytes of directory entries. */
+ result = getdents(dir->dd_fd, dir->dd_buf, dir->dd_max);
+
+ /* We assume we have getdents (). */
+ dir->dd_getdents = have_getdents;
+ if (result <= 0) {
+ result = -result;
+ if (result > 0) {
+ /* Are we right? */
+ if (result == ENOSYS) {
+ dir->dd_getdents = no_getdents;
+ abort();
+ }
+ errno = result;
+ }
+
+ return NULL;
+ }
+
+ dir->dd_size = result;
+ dir->dd_nextloc = 0;
+ }
+
+ de = (struct dirent *) (((char *) dir->dd_buf) + dir->dd_nextloc);
+
+ /* Am I right? H.J. */
+ dir->dd_nextloc += de->d_reclen;
+
+ /* We have to save the next offset here. */
+ dir->dd_nextoff = de->d_off;
+
+ /* convert */
+ dir->dd_buf->d_ino = de->d_ino;
+ dir->dd_buf->d_off = de->d_off;
+ dir->dd_buf->d_reclen = de->d_reclen;
+ dir->dd_buf->d_type = 0;
+ if (strlen((char *) &de->d_type) > 10)
+ de->d_name[10] = 0;
+ strcpy(dir->dd_buf->d_name, (char *) &de->d_name);
+ errno = 0;
+
+ return dir->dd_buf;
+}