File: findme.c

package info (click to toggle)
samba-doc-ja 2.2.8a%2Bja1.0-0.1
  • links: PTS
  • area: main
  • in suites: sarge
  • size: 34,192 kB
  • ctags: 22,693
  • sloc: ansic: 197,587; sh: 8,073; perl: 5,377; makefile: 1,489; awk: 1,146; exp: 1,143; csh: 216
file content (46 lines) | stat: -rw-r--r-- 1,032 bytes parent folder | download | duplicates (3)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
/* (C) 1998 Red Hat Software, Inc. -- Licensing details are in the COPYING
   file accompanying popt source distributions, available from 
   ftp://ftp.redhat.com/pub/code/popt */

#include "system.h"
#include "findme.h"

const char * findProgramPath(const char * argv0) {
    char * path = getenv("PATH");
    char * pathbuf;
    char * start, * chptr;
    char * buf, *local = NULL;

    /* If there is a / in the argv[0], it has to be an absolute
       path */
    if (strchr(argv0, '/'))
	return xstrdup(argv0);

    if (!path) return NULL;

    local = start = pathbuf = malloc(strlen(path) + 1);
    buf = malloc(strlen(path) + strlen(argv0) + 2);
    strcpy(pathbuf, path);

    chptr = NULL;
    do {
	if ((chptr = strchr(start, ':')))
	    *chptr = '\0';
	sprintf(buf, "%s/%s", start, argv0);

	if (!access(buf, X_OK)) {
		if (local) free(local);
		return buf;
	}

	if (chptr) 
	    start = chptr + 1;
	else
	    start = NULL;
    } while (start && *start);

    free(buf);
    if (local) free(local);

    return NULL;
}