+/* vi: set sw=4 ts=4: */
/*
- * Mini chown/chmod/chgrp implementation for busybox
+ * Mini chown implementation for busybox
*
- * Copyright (C) 1998 by Erik Andersen <andersee@debian.org>
+ * Copyright (C) 1999-2003 by Erik Andersen <andersen@codepoet.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
*
*/
-#include <stdio.h>
-#include <grp.h>
-#include <pwd.h>
-#include "internal.h"
+/* BB_AUDIT SUSv3 defects - unsupported options -h, -H, -L, and -P. */
+/* BB_AUDIT GNU defects - unsupported options -h, -c, -f, -v, and long options. */
+/* BB_AUDIT Note: gnu chown does not support -H, -L, or -P. */
+/* http://www.opengroup.org/onlinepubs/007904975/utilities/chown.html */
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+#include "busybox.h"
-static int uid=-1;
-static int gid=0;
-static int whichApp;
-static char* invocationName=NULL;
-static mode_t mode=7777;
+/* Don't use lchown for glibc older then 2.1.x */
+#if (__GLIBC__ <= 2) && (__GLIBC_MINOR__ < 1)
+#define lchown chown
+#endif
+static long uid;
+static long gid;
-#define CHGRP_APP 1
-#define CHOWN_APP 2
-#define CHMOD_APP 3
+static int (*chown_func)(const char *, uid_t, gid_t) = chown;
-static const char chgrp_usage[] = "[OPTION]... GROUP FILE...\n"
- "Change the group membership of each FILE to GROUP.\n"
- "\n\tOptions:\n" "\t-R\tchange files and directories recursively\n";
-static const char chown_usage[] = "[OPTION]... OWNER[.[GROUP] FILE...\n"
- "Change the owner and/or group of each FILE to OWNER and/or GROUP.\n"
- "\n\tOptions:\n" "\t-R\tchange files and directories recursively\n";
-static const char chmod_usage[] = "[-R] MODE[,MODE]... FILE...\n"
-"Each MODE is one or more of the letters ugoa, one of the symbols +-= and\n"
-"one or more of the letters rwxst.\n\n"
- "\t-R\tchange files and directories recursively.\n";
-
-
-
-static int fileAction(const char *fileName)
+static int fileAction(const char *fileName, struct stat *statbuf, void* junk)
{
- struct stat statBuf;
- if (stat(fileName, &statBuf) < 0) {
- switch (whichApp) {
- case CHGRP_APP:
- case CHOWN_APP:
- if (chown(fileName, ((whichApp==CHOWN_APP)? uid: statBuf.st_uid), gid) < 0)
- return( TRUE);
- case CHMOD_APP:
- if (chmod(fileName, mode))
- return( TRUE);
+ if (chown_func(fileName, uid, (gid == -1) ? statbuf->st_gid : gid) == 0) {
+ chmod(fileName, statbuf->st_mode);
+ return (TRUE);
}
- }
- perror(fileName);
- return( FALSE);
+ bb_perror_msg("%s", fileName); /* Avoid multibyte problems. */
+ return (FALSE);
}
-/* [ugoa]{+|-|=}[rwxstl] */
-int parse_mode( const char* s, mode_t* or, mode_t* and, int* group_execute)
-{
- mode_t mode = 0;
- mode_t groups = S_ISVTX;
- char type;
- char c;
+#define FLAG_R 1
+#define FLAG_h 2
- do {
- for ( ; ; ) {
- switch ( c = *s++ ) {
- case '\0':
- return (FALSE);
- case 'u':
- groups |= S_ISUID|S_IRWXU;
- continue;
- case 'g':
- groups |= S_ISGID|S_IRWXG;
- continue;
- case 'o':
- groups |= S_IRWXO;
- continue;
- case 'a':
- groups |= S_ISUID|S_ISGID|S_IRWXU|S_IRWXG|S_IRWXO;
- continue;
- case '+':
- case '=':
- case '-':
- type = c;
- if ( groups == S_ISVTX ) /* The default is "all" */
- groups |= S_ISUID|S_ISGID|S_IRWXU|S_IRWXG|S_IRWXO;
- break;
- default:
- if ( c >= '0' && c <= '7' && mode == 0 && groups == S_ISVTX ) {
- *and = 0;
- *or = strtol(--s, 0, 010);
- return (TRUE);
- }
- else
- return (FALSE);
- }
- break;
- }
+int chown_main(int argc, char **argv)
+{
+ int flags;
+ int retval = EXIT_SUCCESS;
+ char *groupName;
- while ( (c = *s++) != '\0' ) {
- switch ( c ) {
- case ',':
- break;
- case 'r':
- mode |= S_IRUSR|S_IRGRP|S_IROTH;
- continue;
- case 'w':
- mode |= S_IWUSR|S_IWGRP|S_IWOTH;
- continue;
- case 'x':
- mode |= S_IXUSR|S_IXGRP|S_IXOTH;
- continue;
- case 's':
- if ( group_execute != 0 && (groups & S_IRWXG) ) {
- if ( *group_execute < 0 )
- return (FALSE);
- if ( type != '-' ) {
- mode |= S_IXGRP;
- *group_execute = 1;
- }
- }
- mode |= S_ISUID|S_ISGID;
- continue;
- case 'l':
- if ( *group_execute > 0 )
- return (FALSE);
- if ( type != '-' ) {
- *and &= ~S_IXGRP;
- *group_execute = -1;
- }
- mode |= S_ISGID;
- groups |= S_ISGID;
- continue;
- case 't':
- mode |= S_ISVTX;
- continue;
- default:
- return (FALSE);
- }
- break;
- }
- switch ( type ) {
- case '=':
- *and &= ~(groups);
- /* fall through */
- case '+':
- *or |= mode & groups;
- break;
- case '-':
- *and &= ~(mode & groups);
- *or &= *and;
- break;
- }
- } while ( c == ',' );
- return (TRUE);
-}
+ flags = bb_getopt_ulflags(argc, argv, "Rh");
+ if (flags & FLAG_h) chown_func = lchown;
-int chmod_chown_chgrp_main(int argc, char **argv)
-{
- struct group *grp;
- struct passwd *pwd;
- int recursiveFlag=FALSE;
- char *groupName;
-
-
- whichApp = (strcmp(*argv, "chown")==0)? CHOWN_APP : (strcmp(*argv, "chmod")==0)? CHMOD_APP : CHGRP_APP;
-
- if (argc < 2) {
- fprintf(stderr, "Usage: %s %s", *argv,
- (whichApp==TRUE)? chown_usage : chgrp_usage);
- exit( FALSE);
- }
- invocationName=*argv;
- argc--;
- argv++;
-
- /* Parse options */
- while (**argv == '-') {
- while (*++(*argv)) switch (**argv) {
- case 'R':
- recursiveFlag = TRUE;
- break;
- default:
- fprintf(stderr, "Unknown option: %c\n", **argv);
- exit( FALSE);
+ if (argc - optind < 2) {
+ bb_show_usage();
}
- argc--;
- argv++;
- }
-
- if ( whichApp == CHMOD_APP ) {
- /* Find the specified modes */
- if ( parse_mode(*argv, &orWithMode, &andWithMode, 0) == FALSE ) {
- fprintf(stderr, "%s: Unknown mode: %s\n", invocationName, *argv);
- exit( FALSE);
- }
- mode &= andWithMode;
- mode |= orWithMode;
- } else {
-
- /* Find the selected group */
- groupName = strchr(*argv, '.');
- if ( whichApp==TRUE && groupName )
- *groupName++ = '\0';
- else
- groupName = *argv;
- grp = getgrnam(groupName);
- if (grp == NULL) {
- fprintf(stderr, "%s: Unknown group name: %s\n", invocationName, groupName);
- exit( FALSE);
+
+ argv += optind;
+
+ /* First, check if there is a group name here */
+ if ((groupName = strchr(*argv, '.')) == NULL) {
+ groupName = strchr(*argv, ':');
}
- gid = grp->gr_gid;
-
- /* Find the selected user (if appropriate) */
- if (whichApp==TRUE) {
- pwd = getpwnam(*argv);
- if (pwd == NULL) {
- fprintf(stderr, "%s: Unknown user name: %s\n", invocationName, *argv);
- exit( FALSE);
- }
- uid = pwd->pw_uid;
+
+ gid = -1;
+ if (groupName) {
+ *groupName++ = '\0';
+ gid = get_ug_id(groupName, my_getgrnam);
}
- }
-
- /* Ok, ready to do the deed now */
- if (argc <= 1) {
- fprintf(stderr, "%s: too few arguments", invocationName);
- exit( FALSE);
- }
- while (argc-- > 1) {
- argv++;
- recursiveAction( *argv, recursiveFlag, TRUE, fileAction, fileAction);
- }
- exit(TRUE);
+
+ /* Now check for the username */
+ uid = get_ug_id(*argv, my_getpwnam);
+
+ ++argv;
+
+ /* Ok, ready to do the deed now */
+ do {
+ if (! recursive_action (*argv, (flags & FLAG_R), FALSE, FALSE,
+ fileAction, fileAction, NULL)) {
+ retval = EXIT_FAILURE;
+ }
+ } while (*++argv);
+
+ return retval;
}
+/*
+Local Variables:
+c-file-style: "linux"
+c-basic-offset: 4
+tab-width: 4
+End:
+*/
projects / oweals / busybox.git / blobdiff