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-rw-r--r--coreutils/chmod.c161
-rw-r--r--coreutils/chown.c191
2 files changed, 258 insertions, 94 deletions
diff --git a/coreutils/chmod.c b/coreutils/chmod.c
index 225c92d10..9f84d0d37 100644
--- a/coreutils/chmod.c
+++ b/coreutils/chmod.c
@@ -1,41 +1,54 @@
-#include <stdlib.h>
+/*
+ * Mini chmod implementation for busybox
+ *
+ * Copyright (C) 1998 by Erik Andersen <andersee@debian.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
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
#include <stdio.h>
-#include <unistd.h>
-#include <sys/stat.h>
+#include <grp.h>
+#include <pwd.h>
#include "internal.h"
-const char chmod_usage[] = "chmod [-R] mode file [file ...]\n"
-"\nmode may be an octal integer representing the bit pattern for the\n"
-"\tnew mode, or a symbolic value matching the pattern\n"
-"\t[ugoa]{+|-|=}[rwxst] .\n"
-"\t\tu:\tUser\n"
-"\t\tg:\tGroup\n"
-"\t\to:\tOthers\n"
-"\t\ta:\tAll\n"
-"\n"
-"\n+:\tAdd privilege\n"
-"\n-:\tRemove privilege\n"
-"\n=:\tSet privilege\n"
-"\n"
-"\t\tr:\tRead\n"
-"\t\tw:\tWrite\n"
-"\t\tx:\tExecute\n"
-"\t\ts:\tSet User ID\n"
-"\t\tt:\t\"Sticky\" Text\n"
-"\n"
-"\tModes may be concatenated, as in \"u=rwx,g=rx,o=rx,-t,-s\n"
-"\n"
-"\t-R:\tRecursively change the mode of all files and directories\n"
-"\t\tunder the argument directory.";
-
-int
-parse_mode(
- const char * s
-,mode_t * or
-,mode_t * and
-,int * group_execute)
+
+static mode_t mode=7777;
+
+
+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)
+{
+ struct stat statBuf;
+ if ((stat(fileName, &statBuf) < 0) ||
+ (chmod(fileName, mode)) < 0) {
+ perror(fileName);
+ return( FALSE);
+ }
+ return( TRUE);
+}
+
+/* [ugoa]{+|-|=}[rwxstl] */
+int parse_mode( const char* s, mode_t* or, mode_t* and, int* group_execute)
{
- /* [ugoa]{+|-|=}[rwxstl] */
mode_t mode = 0;
mode_t groups = S_ISVTX;
char type;
@@ -45,7 +58,7 @@ parse_mode(
for ( ; ; ) {
switch ( c = *s++ ) {
case '\0':
- return -1;
+ return (FALSE);
case 'u':
groups |= S_ISUID|S_IRWXU;
continue;
@@ -69,10 +82,10 @@ parse_mode(
if ( c >= '0' && c <= '7' && mode == 0 && groups == S_ISVTX ) {
*and = 0;
*or = strtol(--s, 0, 010);
- return 0;
+ return (TRUE);
}
else
- return -1;
+ return (FALSE);
}
break;
}
@@ -93,7 +106,7 @@ parse_mode(
case 's':
if ( group_execute != 0 && (groups & S_IRWXG) ) {
if ( *group_execute < 0 )
- return -1;
+ return (FALSE);
if ( type != '-' ) {
mode |= S_IXGRP;
*group_execute = 1;
@@ -103,7 +116,7 @@ parse_mode(
continue;
case 'l':
if ( *group_execute > 0 )
- return -1;
+ return (FALSE);
if ( type != '-' ) {
*and &= ~S_IXGRP;
*group_execute = -1;
@@ -115,7 +128,7 @@ parse_mode(
mode |= S_ISVTX;
continue;
default:
- return -1;
+ return (FALSE);
}
break;
}
@@ -132,32 +145,54 @@ parse_mode(
break;
}
} while ( c == ',' );
- return 0;
+ return (TRUE);
}
-extern int
-chmod_main(struct FileInfo * i, int argc, char * * argv)
+
+int chmod_main(int argc, char **argv)
{
- i->andWithMode = S_ISVTX|S_ISUID|S_ISGID|S_IRWXU|S_IRWXG|S_IRWXO;
- i->orWithMode = 0;
-
- while ( argc >= 3 ) {
- if ( parse_mode(argv[1], &i->orWithMode, &i->andWithMode, 0)
- == 0 ) {
- argc--;
- argv++;
- }
- else if ( strcmp(argv[1], "-R") == 0 ) {
- i->recursive = 1;
- argc--;
- argv++;
- }
- else
- break;
- }
+ int recursiveFlag=FALSE;
+ mode_t andWithMode = S_ISVTX|S_ISUID|S_ISGID|S_IRWXU|S_IRWXG|S_IRWXO;
+ mode_t orWithMode = 0;
+ char *invocationName=*argv;
- i->changeMode = 1;
- i->complainInPostProcess = 1;
+ if (argc < 3) {
+ fprintf(stderr, "Usage: %s %s", invocationName, chmod_usage);
+ exit( FALSE);
+ }
+ 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);
+ }
+ argc--;
+ argv++;
+ }
+
+ /* Find the selected group */
+ if ( parse_mode(*argv, &orWithMode, &andWithMode, 0) == FALSE ) {
+ fprintf(stderr, "%s: Unknown mode: %s\n", invocationName, *argv);
+ exit( FALSE);
+ }
+ mode &= andWithMode;
+ mode |= orWithMode;
- return monadic_main(i, argc, argv);
+ /* 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);
}
diff --git a/coreutils/chown.c b/coreutils/chown.c
index 8d6cffa14..76f3333e3 100644
--- a/coreutils/chown.c
+++ b/coreutils/chown.c
@@ -1,5 +1,5 @@
/*
- * Mini chown/chgrp implementation for busybox
+ * Mini chown/chmod/chgrp implementation for busybox
*
* Copyright (C) 1998 by Erik Andersen <andersee@debian.org>
*
@@ -27,33 +27,150 @@
static int uid=-1;
static int gid=0;
-static int chownApp;
+static int whichApp;
static char* invocationName=NULL;
+static mode_t mode=7777;
+#define CHGRP_APP 1
+#define CHOWN_APP 2
+#define CHMOD_APP 3
+
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)
{
struct stat statBuf;
- if ((stat(fileName, &statBuf) < 0) ||
- (chown(fileName,
- ((chownApp==TRUE)? uid: statBuf.st_uid),
- gid) < 0)) {
- perror(fileName);
- return( FALSE);
+ 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);
+ }
}
- return( TRUE);
+ perror(fileName);
+ return( FALSE);
}
-int chown_main(int argc, char **argv)
+/* [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;
+
+ 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;
+ }
+
+ 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);
+}
+
+
+int chmod_chown_chgrp_main(int argc, char **argv)
{
struct group *grp;
struct passwd *pwd;
@@ -61,11 +178,11 @@ int chown_main(int argc, char **argv)
char *groupName;
- chownApp = (strcmp(*argv, "chown")==0)? TRUE : FALSE;
+ whichApp = (strcmp(*argv, "chown")==0)? CHOWN_APP : (strcmp(*argv, "chmod")==0)? CHMOD_APP : CHGRP_APP;
if (argc < 2) {
fprintf(stderr, "Usage: %s %s", *argv,
- (chownApp==TRUE)? chown_usage : chgrp_usage);
+ (whichApp==TRUE)? chown_usage : chgrp_usage);
exit( FALSE);
}
invocationName=*argv;
@@ -86,29 +203,40 @@ int chown_main(int argc, char **argv)
argv++;
}
- /* Find the selected group */
- groupName = strchr(*argv, '.');
- if ( chownApp==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);
- }
- gid = grp->gr_gid;
+ 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 user (if appropriate) */
- if (chownApp==TRUE) {
- pwd = getpwnam(*argv);
- if (pwd == NULL) {
- fprintf(stderr, "%s: Unknown user name: %s\n", invocationName, *argv);
+ /* 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);
}
- uid = pwd->pw_uid;
- }
+ 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;
+ }
+ }
+
/* Ok, ready to do the deed now */
if (argc <= 1) {
fprintf(stderr, "%s: too few arguments", invocationName);
@@ -120,3 +248,4 @@ int chown_main(int argc, char **argv)
}
exit(TRUE);
}
+
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-01 17:57:29 +0000