aboutsummaryrefslogtreecommitdiffstats
path: root/readlinkat.c
diff options
context:
space:
mode:
authorMattias Andrée <maandree@kth.se>2024-08-18 10:07:51 +0200
committerMattias Andrée <maandree@kth.se>2024-08-18 10:07:51 +0200
commit2de8dae44c40d97e3947070353c1db709a35f92c (patch)
tree13a9827273a54b2a9235135c84eae735ced05009 /readlinkat.c
parentAdd @since for definitions added in version 1.5 (diff)
parentAdd missing .c files (diff)
downloadlibsimple-2de8dae44c40d97e3947070353c1db709a35f92c.tar.gz
libsimple-2de8dae44c40d97e3947070353c1db709a35f92c.tar.bz2
libsimple-2de8dae44c40d97e3947070353c1db709a35f92c.tar.xz
Merge tag '1.6' into since
Version 1.6
Diffstat (limited to 'readlinkat.c')
-rw-r--r--readlinkat.c41
1 files changed, 41 insertions, 0 deletions
diff --git a/readlinkat.c b/readlinkat.c
new file mode 100644
index 0000000..2ec5e88
--- /dev/null
+++ b/readlinkat.c
@@ -0,0 +1,41 @@
+/* See LICENSE file for copyright and license details. */
+#include "common.h"
+#ifndef TEST
+
+
+char *
+libsimple_readlinkat(int dirfd, const char *path)
+{
+ char *ret = NULL, *new;
+ size_t size = 0;
+ ssize_t r;
+
+ do {
+ new = realloc(ret, size += 128);
+ if (!new) {
+ errno = ENOMEM;
+ fail:
+ free(ret);
+ return NULL;
+ }
+ ret = new;
+ r = readlinkat(dirfd, path, ret, size - 1U);
+ if (r < 0)
+ goto fail;
+ } while ((size_t)r >= size - 2U);
+
+ ret[r] = '\0';
+ return ret;
+}
+
+
+#else
+#include "test.h"
+
+int
+main(void) /* TODO test */
+{
+ return 0;
+}
+
+#endif