src/usr.bin/which/which.c - diff

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Up to [local] / src / usr.bin / which

version 1.24, 2016/01/14 22:00:53

version 1.25, 2016/01/14 22:02:13

Line 98

findprog(char *prog, char *path, int progmode, int allmatches)

{

char *p, filename[PATH_MAX];

int proglen, plen, rval = 0;

int len, rval = 0;

struct stat sbuf;

char *pathcpy;

Line 118

err(1, "strdup");

pathcpy = path;

proglen = strlen(prog);

while ((p = strsep(&pathcpy, ":")) != NULL) {

if (*p == '\0')

p = ".";

plen = strlen(p);

len = strlen(p);

while (plen > 0 && p[plen-1] == '/')

while (len > 0 && p[len-1] == '/')

p[--plen] = '\0'; /* strip trailing '/' */

p[--len] = '\0'; /* strip trailing '/' */

if (plen + 1 + proglen >= sizeof(filename)) {

len = snprintf(filename, sizeof(filename), "%s/%s", p, prog);

if (len < 0 || len >= sizeof(filename)) {

warnc(ENAMETOOLONG, "%s/%s", p, prog);

free(path);

return (0);

}

snprintf(filename, sizeof(filename), "%s/%s", p, prog);

if ((stat(filename, &sbuf) == 0) && S_ISREG(sbuf.st_mode) &&

access(filename, X_OK) == 0) {

(void)puts(filename);