From b550a5ba0261f3b6aba8988e37f1005102544568 Mon Sep 17 00:00:00 2001 From: Mattias Andrée Date: Mon, 1 Jul 2024 20:11:29 +0200 Subject: Add readlink and readmagiclink functions MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: Mattias Andrée --- readlinkat.c | 41 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 41 insertions(+) create mode 100644 readlinkat.c (limited to 'readlinkat.c') 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 -- cgit v1.2.3-70-g09d2