sfakeroot

manipulate files faking root privileges
git clone git://git.vx21.xyz/sfakeroot
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chown.c (1191B)

      1 #include <stdio.h>
      2 #include <stdlib.h>
      3 #include <string.h>
      4 #include <sys/stat.h>
      5 #include <unistd.h>
      6 #include <fcntl.h>
      7 #include <errno.h>
      8 
      9 int main(void)
     10 {
     11     char *template = "/tmp/sfakeroot.test.XXXXXX";
     12     char path[strlen(template) + 1];
     13     struct stat st_before;
     14     struct stat st_after;
     15 
     16     strcpy(path, template);
     17     printf("test making path %s\n", mktemp(path));
     18 
     19     if (creat(path, 777) == -1) {
     20         fprintf(stderr, "creat '%s' failed: %s\n", path, strerror(errno));
     21     }
     22 
     23     if (stat(path, &st_before) == -1)
     24     {
     25         fprintf(stderr, "stat failed\n");
     26         return 1;
     27     }
     28     if (st_before.st_uid != 0 || st_before.st_gid != 0) {
     29         fprintf(stderr, "uid/gid not 0\n");
     30         return 1;
     31     }
     32 
     33     if (chown(path, 42, 43) == -1) {
     34         fprintf(stderr, "chown '%s' failed: %s\n", path, strerror(errno));
     35         return 1;
     36     }
     37 
     38     if (stat(path, &st_after) == -1)
     39     {
     40         fprintf(stderr, "stat failed\n");
     41         return 1;
     42     }
     43     if (st_after.st_uid != 42) {
     44         fprintf(stderr, "uid not 42\n");
     45         return 1;
     46     }
     47     if (st_after.st_gid != 43) {
     48         fprintf(stderr, "gid not 43\n");
     49         return 1;
     50     }
     51 
     52     return 0;
     53 }