81 lines
1.6 KiB
C
81 lines
1.6 KiB
C
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#include <assert.h>
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#include <errno.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/stat.h>
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#include <unistd.h>
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char *cmnd;
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void usage(void) {
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fprintf(stderr, "Usage: %s -F protofile file ...\n", cmnd);
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exit(1);
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}
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typedef struct {
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uid_t user;
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gid_t group;
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mode_t mode;
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} perm_t;
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int getperm(const char *filename, perm_t *permp) {
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struct stat sb;
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if (stat(filename, &sb) == -1) return -1;
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permp->user = sb.st_uid;
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permp->group = sb.st_gid;
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permp->mode = sb.st_mode;
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return 0;
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}
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int setperm(const char *filename, perm_t perm) {
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int rc = 0;
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if (chown(filename, perm.user, perm.group) == -1) {
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fprintf (stderr, "%s: cannot change owner of `%s' to %ld:%ld: %s\n",
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cmnd, filename, (long)perm.user, (long)perm.group, strerror(errno));
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rc = 1;
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}
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if (chmod(filename, perm.mode) == -1) {
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fprintf (stderr, "%s: cannot change mode of %s to %lo: %s\n",
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cmnd, filename, (unsigned long)perm.mode, strerror(errno));
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rc = 1;
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}
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return rc;
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}
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int main (int argc, char **argv) {
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int c;
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perm_t perm;
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int i;
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cmnd = argv[0];
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while ((c = getopt(argc, argv, "o:g:m:F:R")) != EOF) {
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switch (c) {
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case 'o':
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case 'p':
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case 'm':
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case 'R':
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fprintf (stderr, "%s: option `%c' not yet implemented. Sorry\n", cmnd, c);
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exit(1);
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case 'F':
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if (getperm (optarg, &perm) == -1) {
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fprintf (stderr, "%s: cannot get permissions from %s: %s\n",
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cmnd, optarg, strerror(errno));
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exit(1);
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}
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break;
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case '?':
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usage ();
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default:
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assert(0);
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}
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}
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for (i = optind; i < argc; i ++) {
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setperm(argv[i], perm);
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}
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return 0;
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}
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