home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
Atari Mega Archive 2
/
Atari Mega Archive CD - Volume 2.iso
/
minix
/
up1510b.tgz
/
up1510b
/
src
/
commands
/
chown.c
< prev
next >
Wrap
C/C++ Source or Header
|
1990-07-23
|
3KB
|
106 lines
/*
* chown- Change the owner and/or group ID of a file.
*
* Author: Bert Reuling (bert@kyber.UUCP)
*
* Revision History:
* 1.1 89/09/25 bert@kyber.UUCP Initial revision
* 89/10/04 waltje@kyber.UUCP Adapted to MINIX Style Sheet
*/
#include <sys/types.h>
#include <ctype.h>
#include <grp.h>
#include <pwd.h>
#include <string.h>
#include <sys/stat.h>
#include <stdio.h>
#ifndef TRUE
# define TRUE 1
# define FALSE 0
#endif
static char rcsid[] = "$Header: chown.c,v 1.1 89/10/04 20:45:00 bert Exp $";
main(argc, argv)
int argc;
char *argv[];
{
int i, uid, gid, Chown, status = 0;
char *pgmname, *uids, *gids;
struct passwd *pwd;
struct group *grp;
struct stat st;
if ((pgmname = strrchr(argv[0], '/')) != NULL) pgmname++;
else pgmname = argv[0];
if (strcmp(pgmname, "chown") == 0) Chown = TRUE;
else if (strcmp(pgmname, "chgrp") == 0) Chown = FALSE;
else {
(void) fprintf(stderr, "%s: should be named \"chown\" or \"chgrp\"\n", argv[0]);
(void) exit(-1);
}
if (argc < 3) {
(void) fprintf(stderr,"Usage: %s %s file ...\n", pgmname, (Chown) ? "owner" : "group");
(void) exit(1);
}
if ((gids = strchr(argv[1], '.')) != NULL) {
*gids++ = '\0';
uids = argv[1];
} else {
if (Chown) {
uids = argv[1];
gids = NULL;
} else {
uids = NULL;
gids = argv[1];
}
}
if (uids == NULL) pwd = NULL;
else {
if (isdigit(*uids)) pwd = getpwuid(atoi(uids));
else pwd = getpwnam(uids);
if (pwd == NULL) {
(void) fprintf(stderr, "%s: unknown user id %s\n", pgmname, uids);
(void) exit(-1);
}
}
if (gids == NULL) grp = NULL;
else {
if (isdigit(*gids)) grp = getgrgid(atoi(gids));
else grp = getgrnam(gids);
if (grp == NULL) {
(void) fprintf(stderr, "%s: unknown group: %s\n", pgmname, gids);
(void) exit(-1);
}
}
for (i = 2; i < argc; i++) {
if (stat(argv[i], &st) != -1) {
uid = (pwd == NULL) ? st.st_uid : pwd->pw_uid;
gid = (grp == NULL) ? st.st_gid : grp->gr_gid;
if (chown(argv[i], uid, gid) == -1) {
(void) fprintf(stderr,"%s: not changed\n", argv[i]);
status++;
}
#ifdef _MINIX
/*
* chown(2) should do this ...
*/
if (getuid() != 0) {
st.st_mode &= ~S_ISUID;
st.st_mode &= ~S_ISGID;
if (chmod(argv[i], st.st_mode) == -1) {
(void) fprintf(stderr, "%s: mode not changed\n", argv[i]);
status++;
}
}
#endif
} else {
(void) perror(argv[i]);
status++;
}
}
(void) exit(status);
}