132 lines
2.1 KiB
C
132 lines
2.1 KiB
C
#include <pwd.h>
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#include <grp.h>
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#include <stdio.h>
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#include <errno.h>
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#include <dirent.h>
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#include <string.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include "make_path.h"
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#include "get_stat.h"
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#include "recurse.h"
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#include "unused.h"
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unsigned int r_flag;
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char *f_flag = "chown";
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unsigned int H_flag;
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unsigned int v_flag;
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int (*chown_func)(const char *pathname, uid_t owner, gid_t group);
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long gid;
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long uid;
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int change(const char *path, void *p) {
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char *name = (char *)p;
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if (chown_func(path, uid, gid)) {
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if (f_flag)
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fprintf(stderr, "chown: unable to chown %s: %s\n", path, strerror(errno));
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return 1;
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}
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if (v_flag)
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printf("chown: %s: changed to %s\n", path, name);
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return 0;
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}
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void get_owner(const char *arg) {
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char *group = strchr(arg, ':');
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unsigned int g_flag = 1;
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unsigned int u_flag = 1;
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if (group == arg)
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u_flag = 0;
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else if (!group)
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g_flag = 0;
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if (g_flag) {
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group[0] = '\0';
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group++;
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struct group *grp = getgrnam(group);
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if (!grp) {
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if (f_flag)
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fprintf(stderr, "chown: invalid group: %s\n", group);
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exit(1);
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}
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gid = grp->gr_gid;
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}
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if (u_flag) {
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struct passwd *pwd = getpwnam(arg);
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if (!pwd) {
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if (f_flag)
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fprintf(stderr, "chown: invalid user: %s\n", arg);
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exit(1);
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}
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uid = pwd->pw_gid;
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}
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}
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int main(int argc, char **argv) {
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chown_func = lchown;
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int opt;
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while ((opt = getopt(argc, argv, "RfHv")) != -1) {
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switch (opt) {
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case 'R':
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r_flag = 1;
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break;
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case 'f':
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f_flag = NULL;
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break;
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case 'H':
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H_flag = 1;
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chown_func = chown;
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break;
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case 'v':
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v_flag = 1;
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break;
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default:
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printf("chown USER[:[GRP]] [file1 file2...]\n\t[-H Symbolic link]\n\t[-R Recursive] [-f Silent]\n\t[-v Verbose]\n");
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return 0;
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}
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}
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argv += optind;
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argc -= optind;
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if (argc == 0) {
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fprintf(stderr, "chown: missing operand\n");
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return 1;
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}
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gid = -1;
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uid = -1;
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get_owner(argv[0]);
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int ret = 0;
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for (int i = 1; i < argc; i++) {
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if (r_flag) {
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if (mu_recurse(f_flag, H_flag, argv[i], argv[0], change, change))
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ret = 1;
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}
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else
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ret = change(argv[i], argv[0]);
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}
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return ret;
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}
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