sbase/chmod.c

61 lines
1.3 KiB
C

/* See LICENSE file for copyright and license details. */
#include <stdbool.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/stat.h>
#include "util.h"
static void chmodr(const char *);
static bool rflag = false;
static mode_t mode = 0;
int
main(int argc, char *argv[])
{
char c, *end;
int octal;
while((c = getopt(argc, argv, "Rr")) != -1)
switch(c) {
case 'R':
case 'r':
rflag = true;
break;
default:
exit(EXIT_FAILURE);
}
if(optind == argc)
eprintf("usage: %s [-Rr] mode [file...]\n", argv[0]);
octal = strtol(argv[optind++], &end, 8);
if(*end != '\0')
eprintf("%s: not an octal number\n", argv[optind-1]);
/* posix doesn't specify modal bits */
if(octal & 04000) mode |= S_ISUID;
if(octal & 02000) mode |= S_ISGID;
if(octal & 00400) mode |= S_IRUSR;
if(octal & 00200) mode |= S_IWUSR;
if(octal & 00100) mode |= S_IXUSR;
if(octal & 00040) mode |= S_IRGRP;
if(octal & 00020) mode |= S_IWGRP;
if(octal & 00010) mode |= S_IXGRP;
if(octal & 00004) mode |= S_IROTH;
if(octal & 00002) mode |= S_IWOTH;
if(octal & 00001) mode |= S_IXOTH;
for(; optind < argc; optind++)
chmodr(argv[optind]);
return EXIT_SUCCESS;
}
void
chmodr(const char *path)
{
if(chmod(path, mode) == -1)
eprintf("chmod %s:", path);
if(rflag)
recurse(path, chmodr);
}