summaryrefslogtreecommitdiff
path: root/libc/unistd/confstr.c
diff options
context:
space:
mode:
Diffstat (limited to 'libc/unistd/confstr.c')
-rw-r--r--libc/unistd/confstr.c59
1 files changed, 59 insertions, 0 deletions
diff --git a/libc/unistd/confstr.c b/libc/unistd/confstr.c
new file mode 100644
index 000000000..017cf1e8e
--- /dev/null
+++ b/libc/unistd/confstr.c
@@ -0,0 +1,59 @@
+/* Copyright (C) 1991, 1996, 1997, 2000 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public License as
+ published by the Free Software Foundation; either version 2 of the
+ License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If not,
+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+#include <stddef.h>
+#include <errno.h>
+#include <unistd.h>
+#include <string.h>
+
+#define CS_PATH "/bin:/usr/bin"
+
+/* If BUF is not NULL and LEN > 0, fill in at most LEN - 1 bytes
+ of BUF with the value corresponding to NAME and zero-terminate BUF.
+ Return the number of bytes required to hold NAME's entire value. */
+size_t confstr ( int name, char *buf, size_t len)
+{
+ const char *string;
+ size_t string_len;
+
+ switch (name)
+ {
+ case _CS_PATH:
+ {
+ static const char cs_path[] = CS_PATH;
+ string = cs_path;
+ string_len = sizeof (cs_path);
+ }
+ break;
+ default:
+ __set_errno (EINVAL);
+ return 0;
+ }
+
+ if (len > 0 && buf != NULL)
+ {
+ if (string_len <= len)
+ memcpy (buf, string, string_len);
+ else
+ {
+ memcpy (buf, string, len - 1);
+ buf[len - 1] = '\0';
+ }
+ }
+ return string_len;
+}