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
|
#include <errno.h>
#include <pwd.h>
#include <stdio.h>
#include <string.h>
#include <sys/types.h>
#include <unistd.h>
/* TODO: use strtok() to get the group */
int
main(int argc, char *argv[])
{
if(argc == 1) {
fprintf(stderr, "usage: chown owner file...\n");
return 1;
}
const char *user = argv[1];
errno = 0;
struct passwd *data = getpwnam(user);
if(data == NULL) {
fprintf(stderr,
"chown: %s: %s\n",
user,
errno == 0 ? "user not found" : strerror(errno));
return 1;
}
uid_t uid = data->pw_gid;
gid_t gid = data->pw_gid; /* Change this with the strtok() thing */
for(int i = 2; i <= argc; i++) {
if(chown(argv[i], uid, gid) == -1) {
fprintf(stderr, "chown: %s: %s\n", argv[i], strerror(errno));
return 1;
}
}
return 0;
}
|
