From 68483ca35c0dbd347744327b1020b2e4215454f1 Mon Sep 17 00:00:00 2001 From: Bruno Haible Date: Thu, 26 Jun 2003 11:03:35 +0000 Subject: [PATCH] Provide the correct errno. --- lib/readlink.c | 16 ++++++++++++++-- 1 file changed, 14 insertions(+), 2 deletions(-) diff --git a/lib/readlink.c b/lib/readlink.c index 72d0e04475..c264efd8c8 100644 --- a/lib/readlink.c +++ b/lib/readlink.c @@ -20,16 +20,28 @@ #endif #include +#include +#include #if !HAVE_READLINK /* readlink() substitute for systems that don't have a readlink() function, such as DJGPP 2.03 and mingw32. */ +/* The official POSIX return type of readlink() is ssize_t, but since here + we have no declaration in a public header file, we use 'int' as return + type. */ + int -readlink (const char *filename, char *buffer, size_t bufsize) +readlink (const char *path, char *buf, size_t bufsize) { - errno = EINVAL; + struct stat statbuf; + + /* In general we should use lstat() here, not stat(). But on platforms + without symbolic links lstat() - if it exists - would be equivalent to + stat(), therefore we can use stat(). This saves us a configure check. */ + if (stat (path, &statbuf) >= 0) + errno = EINVAL; return -1; } -- 2.30.2