You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
104 lines
2.7 KiB
104 lines
2.7 KiB
/*
|
|
* Copyright (C) 2010 Cyril Hrubis chrubis@suse.cz
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms of version 2 of the GNU General Public License as
|
|
* published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope that it would be useful, but
|
|
* WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
|
|
*
|
|
* Further, this software is distributed without any warranty that it is
|
|
* free of the rightful claim of any third person regarding infringement
|
|
* or the like. Any license provided herein, whether implied or
|
|
* otherwise, applies only to this software file. Patent licenses, if
|
|
* any, provided herein do not apply to combinations of this program with
|
|
* other software, or any other product whatsoever.
|
|
*
|
|
* You should have received a copy of the GNU General Public License along
|
|
* with this program; if not, write the Free Software Foundation, Inc.,
|
|
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
|
*/
|
|
|
|
/*
|
|
* Looks for binary prog_name in $PATH.
|
|
*
|
|
* If such file exists and if you are able at least to read it, zero is
|
|
* returned and absolute path to the file is filled into buf. In case buf is
|
|
* too short to hold the absolute path + prog_name for the file we are looking
|
|
* for -1 is returned as well as when there is no such file in all paths in
|
|
* $PATH.
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#include <stdlib.h>
|
|
#include <unistd.h>
|
|
#include <sys/types.h>
|
|
#include <sys/stat.h>
|
|
|
|
#include "test.h"
|
|
|
|
static int file_exist(const char *path)
|
|
{
|
|
struct stat st;
|
|
|
|
if (!access(path, R_OK) && !stat(path, &st) && S_ISREG(st.st_mode))
|
|
return 1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int tst_get_path(const char *prog_name, char *buf, size_t buf_len)
|
|
{
|
|
const char *path = (const char *)getenv("PATH");
|
|
const char *start = path;
|
|
const char *end;
|
|
size_t size, ret;
|
|
|
|
if (path == NULL)
|
|
return -1;
|
|
|
|
do {
|
|
end = strchr(start, ':');
|
|
|
|
if (end != NULL)
|
|
snprintf(buf, MIN(buf_len, (size_t) (end - start + 1)),
|
|
"%s", start);
|
|
else
|
|
snprintf(buf, buf_len, "%s", start);
|
|
|
|
size = strlen(buf);
|
|
|
|
/*
|
|
* "::" inside $PATH, $PATH ending with ':' or $PATH starting
|
|
* with ':' should be expanded into current working directory.
|
|
*/
|
|
if (size == 0) {
|
|
snprintf(buf, buf_len, ".");
|
|
size = strlen(buf);
|
|
}
|
|
|
|
/*
|
|
* If there is no '/' ad the end of path from $PATH add it.
|
|
*/
|
|
if (buf[size - 1] != '/')
|
|
ret =
|
|
snprintf(buf + size, buf_len - size, "/%s",
|
|
prog_name);
|
|
else
|
|
ret =
|
|
snprintf(buf + size, buf_len - size, "%s",
|
|
prog_name);
|
|
|
|
if (buf_len - size > ret && file_exist(buf))
|
|
return 0;
|
|
|
|
start = end + 1;
|
|
|
|
} while (end != NULL);
|
|
|
|
return -1;
|
|
}
|