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Re: filenamecat-lgpl: set errno upon failure
From: |
Bruno Haible |
Subject: |
Re: filenamecat-lgpl: set errno upon failure |
Date: |
Sat, 27 Jun 2020 02:46:48 +0200 |
User-agent: |
KMail/5.1.3 (Linux/4.4.0-179-generic; KDE/5.18.0; x86_64; ; ) |
Based on this patch, _gl_register_fd is now guaranteed to set errno upon
failure.
2020-06-26 Bruno Haible <bruno@clisp.org>
fchdir: Improve documentation.
* lib/fchdir.c (get_name, _gl_register_fd): Document the failure return
convention.
diff --git a/lib/fchdir.c b/lib/fchdir.c
index 20ecd3c..1fa9a7e 100644
--- a/lib/fchdir.c
+++ b/lib/fchdir.c
@@ -84,7 +84,8 @@ ensure_dirs_slot (size_t fd)
return true;
}
-/* Return an absolute name of DIR in malloc'd storage. */
+/* Return an absolute name of DIR in malloc'd storage.
+ Upon failure, return NULL with errno set. */
static char *
get_name (char const *dir)
{
@@ -125,8 +126,8 @@ _gl_unregister_fd (int fd)
/* Mark FD as visiting FILENAME. FD must be non-negative, and refer
to an open file descriptor. If REPLACE_OPEN_DIRECTORY is non-zero,
this should only be called if FD is visiting a directory. Close FD
- and return -1 if there is insufficient memory to track the
- directory name; otherwise return FD. */
+ and return -1 with errno set if there is insufficient memory to track
+ the directory name; otherwise return FD. */
int
_gl_register_fd (int fd, const char *filename)
{