73 lines
1.0 KiB
C
73 lines
1.0 KiB
C
#include <stdio.h>
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#include <string.h>
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#include <unistd.h>
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#include <ftw.h>
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#include <errno.h>
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#include <grp.h>
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#include <sys/types.h>
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#include "util.h"
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static int gid;
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static int failures = 0;
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static void
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usage(void)
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{
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eprintf("usage: chgrp [-R] groupname file...\n");
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}
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static int
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chgrp(const char *path, const struct stat *st, int f)
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{
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(void)f;
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if(chown(path, st->st_uid, gid) == -1) {
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fprintf(stderr, "chgrp: '%s': %s\n", path, strerror(errno));
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failures++;
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}
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return 0;
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}
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int
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main(int argc, char **argv)
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{
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int rflag = 0;
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struct group *gr;
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struct stat st;
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ARGBEGIN {
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case 'R':
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rflag = 1;
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break;
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default:
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usage();
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} ARGEND;
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if(argc<2)
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usage();
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gr = getgrnam(argv[0]);
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if(!gr)
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eprintf("chgrp: '%s': No such group\n", argv[0]);
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gid = gr->gr_gid;
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if(rflag) {
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while(*++argv)
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ftw(*argv, chgrp, FOPEN_MAX);
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return 0;
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}
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while(*++argv) {
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if(stat(*argv, &st) == -1) {
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fprintf(stderr, "chgrp: '%s': %s\n", *argv,
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strerror(errno));
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failures++;
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continue;
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}
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chgrp(*argv, &st, 0);
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}
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return failures;
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}
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