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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/telldir.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/telldir.c')
-rw-r--r--libc/misc/dirent/telldir.c35
1 files changed, 35 insertions, 0 deletions
diff --git a/libc/misc/dirent/telldir.c b/libc/misc/dirent/telldir.c
new file mode 100644
index 000000000..33e163aba
--- /dev/null
+++ b/libc/misc/dirent/telldir.c
@@ -0,0 +1,35 @@
+#include <errno.h>
+#include <unistd.h>
+#include "dirstream.h"
+
+
+off_t telldir(DIR * dir)
+{
+ off_t offset;
+
+ if (!dir) {
+ errno = EBADF;
+ return -1;
+ }
+
+ switch (dir->dd_getdents) {
+ case no_getdents:
+ /* We are running the old kernel. This is the starting offset
+ of the next readdir(). */
+ offset = lseek(dir->dd_fd, 0, SEEK_CUR);
+ break;
+
+ case unknown:
+ /* readdir () is not called yet. but seekdir () may be called. */
+ case have_getdents:
+ /* The next entry. */
+ offset = dir->dd_nextoff;
+ break;
+
+ default:
+ errno = EBADF;
+ offset = -1;
+ }
+
+ return offset;
+}