Patch from Russell Coker:
I've attached my latest SE Linux patch for busybox against the latest CVS
version of busybox.
This commit is contained in:
Eric Andersen
parent
c48d49ad98
commit
9e48045e45
5
Makefile
5
Makefile
@ -31,6 +31,11 @@ DIRS:=applets archival archival/libunarchive coreutils console-tools \
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networking/libiproute networking/udhcp procps loginutils shell \
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sysklogd util-linux libbb libpwdgrp coreutils/libcoreutils
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ifeq ($(strip $(CONFIG_SELINUX)),y)
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CFLAGS += -I/usr/include/selinux
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LIBRARIES += -lsecure
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endif
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ifeq ($(strip $(HAVE_DOT_CONFIG)),y)
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all: busybox busybox.links #doc
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@ -28,9 +28,13 @@
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#include <getopt.h>
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#include <string.h>
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#include <sys/types.h>
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#ifdef CONFIG_SELINUX
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#include <proc_secure.h>
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#include <flask_util.h>
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#endif
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#define NO_GROUP 1
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#define NO_USER 2
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#define JUST_USER 1
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#define JUST_GROUP 2
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#define PRINT_REAL 4
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#define NAME_NOT_NUMBER 8
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@ -40,10 +44,13 @@ extern int id_main(int argc, char **argv)
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long pwnam, grnam;
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int uid, gid;
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int flags;
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#ifdef CONFIG_SELINUX
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int is_flask_enabled_flag = is_flask_enabled();
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#endif
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flags = bb_getopt_ulflags(argc, argv, "ugrn");
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if (((flags & (NO_USER | NO_GROUP)) == (NO_USER | NO_GROUP))
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if (((flags & (JUST_USER | JUST_GROUP)) == (JUST_USER | JUST_GROUP))
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|| (argc > optind + 1)
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) {
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bb_show_usage();
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@ -67,9 +74,9 @@ extern int id_main(int argc, char **argv)
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pwnam=my_getpwnam(user);
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grnam=my_getgrnam(group);
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if (flags & (NO_GROUP | NO_USER)) {
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if (flags & (JUST_GROUP | JUST_USER)) {
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char *s = group;
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if (flags & NO_GROUP) {
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if (flags & JUST_USER) {
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s = user;
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grnam = pwnam;
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}
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@ -79,7 +86,24 @@ extern int id_main(int argc, char **argv)
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printf("%ld\n", grnam);
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}
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} else {
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#ifdef CONFIG_SELINUX
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printf("uid=%ld(%s) gid=%ld(%s)", pwnam, user, grnam, group);
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if(is_flask_enabled_flag)
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{
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security_id_t mysid = getsecsid();
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char context[80];
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int len = sizeof(context);
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context[0] = '\0';
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if(security_sid_to_context(mysid, context, &len))
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strcpy(context, "unknown");
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printf(" context=%s\n", context);
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}
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else
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printf("\n");
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#else
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printf("uid=%ld(%s) gid=%ld(%s)\n", pwnam, user, grnam, group);
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#endif
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}
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bb_fflush_stdout_and_exit(0);
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@ -62,6 +62,11 @@ enum {
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#include <termios.h>
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#include <sys/ioctl.h>
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#include "busybox.h"
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#ifdef CONFIG_SELINUX
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#include <fs_secure.h>
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#include <flask_util.h>
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#include <ss.h>
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#endif
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#ifdef CONFIG_FEATURE_LS_TIMESTAMPS
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#include <time.h>
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@ -89,14 +94,15 @@ enum {
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#define LIST_NLINKS (1U<<3)
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#define LIST_ID_NAME (1U<<4)
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#define LIST_ID_NUMERIC (1U<<5)
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#define LIST_SIZE (1U<<6)
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#define LIST_DEV (1U<<7)
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#define LIST_DATE_TIME (1U<<8)
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#define LIST_FULLTIME (1U<<9)
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#define LIST_FILENAME (1U<<10)
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#define LIST_SYMLINK (1U<<11)
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#define LIST_FILETYPE (1U<<12)
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#define LIST_EXEC (1U<<13)
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#define LIST_CONTEXT (1U<<6)
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#define LIST_SIZE (1U<<7)
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#define LIST_DEV (1U<<8)
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#define LIST_DATE_TIME (1U<<9)
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#define LIST_FULLTIME (1U<<10)
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#define LIST_FILENAME (1U<<11)
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#define LIST_SYMLINK (1U<<12)
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#define LIST_FILETYPE (1U<<13)
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#define LIST_EXEC (1U<<14)
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#define LIST_MASK ((LIST_EXEC << 1) - 1)
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@ -179,6 +185,9 @@ struct dnode { /* the basic node */
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char *name; /* the dir entry name */
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char *fullname; /* the dir entry name */
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struct stat dstat; /* the file stat info */
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#ifdef CONFIG_SELINUX
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security_id_t sid;
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#endif
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struct dnode *next; /* point at the next node */
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};
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typedef struct dnode dnode_t;
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@ -189,6 +198,10 @@ static int list_single(struct dnode *);
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static unsigned int all_fmt;
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#ifdef CONFIG_SELINUX
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static int is_flask_enabled_flag;
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#endif
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#ifdef CONFIG_FEATURE_AUTOWIDTH
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static unsigned short terminal_width = TERMINAL_WIDTH;
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static unsigned short tabstops = COLUMN_GAP;
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@ -203,26 +216,49 @@ static struct dnode *my_stat(char *fullname, char *name)
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{
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struct stat dstat;
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struct dnode *cur;
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#ifdef CONFIG_SELINUX
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security_id_t sid;
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#endif
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int rc;
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#ifdef CONFIG_FEATURE_LS_FOLLOWLINKS
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if (all_fmt & FOLLOW_LINKS) {
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if (stat(fullname, &dstat)) {
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#ifdef CONFIG_SELINUX
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if(is_flask_enabled_flag)
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rc = stat_secure(fullname, &dstat, &sid);
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else
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#endif
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rc = stat(fullname, &dstat);
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if(rc)
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{
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bb_perror_msg("%s", fullname);
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status = EXIT_FAILURE;
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return 0;
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}
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} else
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#endif
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if (lstat(fullname, &dstat)) {
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bb_perror_msg("%s", fullname);
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status = EXIT_FAILURE;
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return 0;
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{
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#ifdef CONFIG_SELINUX
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if(is_flask_enabled_flag)
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rc = lstat_secure(fullname, &dstat, &sid);
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else
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#endif
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rc = lstat(fullname, &dstat);
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if(rc)
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{
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bb_perror_msg("%s", fullname);
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status = EXIT_FAILURE;
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return 0;
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}
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}
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cur = (struct dnode *) xmalloc(sizeof(struct dnode));
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cur->fullname = fullname;
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cur->name = name;
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cur->dstat = dstat;
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#ifdef CONFIG_SELINUX
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cur->sid = sid;
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#endif
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return cur;
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}
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@ -451,6 +487,9 @@ static void showfiles(struct dnode **dn, int nfiles)
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/* find the longest file name- use that as the column width */
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for (i = 0; i < nfiles; i++) {
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int len = strlen(dn[i]->name) +
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#ifdef CONFIG_SELINUX
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((all_fmt & LIST_CONTEXT) ? 33 : 0) +
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#endif
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((all_fmt & LIST_INO) ? 8 : 0) +
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((all_fmt & LIST_BLOCKS) ? 5 : 0);
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if (column_width < len)
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@ -694,6 +733,21 @@ static int list_single(struct dnode *dn)
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}
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column += 13;
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break;
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#endif
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#ifdef CONFIG_SELINUX
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case LIST_CONTEXT:
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{
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char context[64];
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int len = sizeof(context);
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if(security_sid_to_context(dn->sid, context, &len))
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{
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strcpy(context, "unknown");
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len = 7;
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}
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printf("%-32s ", context);
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column += MAX(33, len);
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}
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break;
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#endif
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case LIST_FILENAME:
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#ifdef CONFIG_FEATURE_LS_COLOR
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@ -774,6 +828,9 @@ static const char ls_opts[] = "1AaCdgilnsx"
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"h"
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#endif
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"k"
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#ifdef CONFIG_SELINUX
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"K"
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#endif
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#ifdef CONFIG_FEATURE_AUTOWIDTH
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"T:w:"
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#endif
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@ -834,7 +891,12 @@ static const unsigned opt_flags[] = {
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#ifdef CONFIG_FEATURE_HUMAN_READABLE
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LS_DISP_HR, /* h */
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#endif
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#ifndef CONFIG_SELINUX
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0, /* k - ingored */
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#else
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LIST_CONTEXT, /* k */
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LIST_MODEBITS|LIST_NLINKS|LIST_CONTEXT|LIST_SIZE|LIST_DATE_TIME, /* K */
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#endif
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};
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@ -849,6 +911,9 @@ extern int ls_main(int argc, char **argv)
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int opt;
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int oi, ac;
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char **av;
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#ifdef CONFIG_SELINUX
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is_flask_enabled_flag = is_flask_enabled();
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#endif
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#ifdef CONFIG_FEATURE_AUTOWIDTH
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struct winsize win = { 0, 0, 0, 0 };
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@ -911,6 +976,9 @@ extern int ls_main(int argc, char **argv)
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if (flags & TIME_MASK_TRIGGER) {
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all_fmt &= ~TIME_MASK;
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}
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if (flags & LIST_CONTEXT) {
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all_fmt |= STYLE_SINGLE;
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}
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#ifdef CONFIG_FEATURE_HUMAN_READABLE
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if (opt == 'l') {
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all_fmt &= ~LS_DISP_HR;
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@ -39,6 +39,9 @@
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#include <features.h>
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#include "config.h"
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#ifdef CONFIG_SELINUX
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#include <proc_secure.h>
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#endif
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#include "pwd_.h"
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#include "grp_.h"
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@ -394,7 +397,11 @@ void bb_xasprintf(char **string_ptr, const char *format, ...) __attribute__ ((fo
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#define FAIL_DELAY 3
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extern void change_identity ( const struct passwd *pw );
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extern void run_shell ( const char *shell, int loginshell, const char *command, const char **additional_args );
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extern void run_shell ( const char *shell, int loginshell, const char *command, const char **additional_args
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#ifdef CONFIG_SELINUX
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, security_id_t sid
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#endif
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);
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extern int run_parts(char **args, const unsigned char test_mode);
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extern int restricted_shell ( const char *shell );
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extern void setup_environment ( const char *shell, int loginshell, int changeenv, const struct passwd *pw );
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@ -425,7 +432,11 @@ typedef struct {
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char short_cmd[16];
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} procps_status_t;
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extern procps_status_t * procps_scan(int save_user_arg0);
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extern procps_status_t * procps_scan(int save_user_arg0
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#ifdef CONFIG_SELINUX
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, int use_selinux, security_id_t *sid
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#endif
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);
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extern unsigned short compare_string_array(const char *string_array[], const char *key);
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extern int my_query_module(const char *name, int which, void **buf, size_t *bufsize, size_t *ret);
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@ -882,6 +882,12 @@
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"\t-u\tthe hardware clock is kept in coordinated universal time\n" \
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"\t-l\tthe hardware clock is kept in local time"
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#ifdef CONFIG_SELINUX
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#define USAGE_SELINUX(a, b) a
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#else
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#define USAGE_SELINUX(a, b) b
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#endif
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#define id_trivial_usage \
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"[OPTIONS]... [USERNAME]"
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#define id_full_usage \
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@ -889,6 +895,7 @@
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"Options:\n" \
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"\t-g\tprints only the group ID\n" \
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"\t-u\tprints only the user ID\n" \
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USAGE_SELINUX("\t-c\tprints only the security context\n", "") \
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"\t-n\tprint a name instead of a number (with for -ug)\n" \
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"\t-r\tprints the real user ID instead of the effective ID (with -ug)"
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#define id_example_usage \
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@ -1347,7 +1354,7 @@
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#define USAGE_AUTOWIDTH(a)
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#endif
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#define ls_trivial_usage \
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"[-1Aa" USAGE_LS_TIMESTAMPS("c") "Cd" USAGE_LS_TIMESTAMPS("e") USAGE_LS_FILETYPES("F") "iln" USAGE_LS_FILETYPES("p") USAGE_LS_FOLLOWLINKS("L") USAGE_LS_RECURSIVE("R") USAGE_LS_SORTFILES("rS") "s" USAGE_AUTOWIDTH("T") USAGE_LS_TIMESTAMPS("tu") USAGE_LS_SORTFILES("v") USAGE_AUTOWIDTH("w") "x" USAGE_LS_SORTFILES("X") USAGE_HUMAN_READABLE("h") USAGE_NOT_HUMAN_READABLE("") "k] [filenames...]"
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"[-1Aa" USAGE_LS_TIMESTAMPS("c") "Cd" USAGE_LS_TIMESTAMPS("e") USAGE_LS_FILETYPES("F") "iln" USAGE_LS_FILETYPES("p") USAGE_LS_FOLLOWLINKS("L") USAGE_LS_RECURSIVE("R") USAGE_LS_SORTFILES("rS") "s" USAGE_AUTOWIDTH("T") USAGE_LS_TIMESTAMPS("tu") USAGE_LS_SORTFILES("v") USAGE_AUTOWIDTH("w") "x" USAGE_LS_SORTFILES("X") USAGE_HUMAN_READABLE("h") USAGE_NOT_HUMAN_READABLE("") "k" USAGE_SELINUX("K", "") "] [filenames...]"
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#define ls_full_usage \
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"List directory contents\n\n" \
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"Options:\n" \
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@ -1377,8 +1384,7 @@
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USAGE_LS_SORTFILES("\t-X\tsort the listing by extension\n") \
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USAGE_HUMAN_READABLE( \
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"\t-h\tprint sizes in human readable format (e.g., 1K 243M 2G )\n" \
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"\t-k\tprint sizes in kilobytes(default)") USAGE_NOT_HUMAN_READABLE( \
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"\t-k\tprint sizes in kilobytes(compatibility)")
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USAGE_SELINUX("\t-k\tprint security context\n\t-K\tprint security context in long format\n", "")
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#define lsmod_trivial_usage \
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""
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@ -1786,7 +1792,8 @@
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""
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#define ps_full_usage \
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"Report process status\n" \
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"\nThis version of ps accepts no options."
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USAGE_SELINUX("\nOptions:\n\t-c\tshow SE Linux context", "\nThis version of ps accepts no options.")
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#define ps_example_usage \
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"$ ps\n" \
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" PID Uid Gid State Command\n" \
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@ -41,7 +41,11 @@ extern long* find_pid_by_name( const char* pidName)
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procps_status_t * p;
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pidList = xmalloc(sizeof(long));
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#ifdef CONFIG_SELINUX
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while ((p = procps_scan(0, 0, NULL)) != 0) {
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#else
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while ((p = procps_scan(0)) != 0) {
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#endif
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if (strcmp(p->short_cmd, pidName) == 0) {
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pidList=xrealloc( pidList, sizeof(long) * (i+2));
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pidList[i++]=p->pid;
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@ -16,7 +16,11 @@
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#include "libbb.h"
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extern procps_status_t * procps_scan(int save_user_arg0)
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extern procps_status_t * procps_scan(int save_user_arg0
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#ifdef CONFIG_SELINUX
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, int use_selinux , security_id_t *sid
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#endif
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)
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{
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static DIR *dir;
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struct dirent *entry;
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@ -53,6 +57,14 @@ extern procps_status_t * procps_scan(int save_user_arg0)
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sprintf(status, "/proc/%d/stat", pid);
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if((fp = fopen(status, "r")) == NULL)
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continue;
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#ifdef CONFIG_SELINUX
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if(use_selinux)
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{
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if(fstat_secure(fileno(fp), &sb, sid))
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continue;
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}
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else
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#endif
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if(fstat(fileno(fp), &sb))
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continue;
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my_getpwuid(curstatus.user, sb.st_uid);
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@ -36,14 +36,20 @@
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#include <syslog.h>
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#include <ctype.h>
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#include "libbb.h"
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#ifdef CONFIG_SELINUX
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#include <proc_secure.h>
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#endif
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/* Run SHELL, or DEFAULT_SHELL if SHELL is empty.
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If COMMAND is nonzero, pass it to the shell with the -c option.
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If ADDITIONAL_ARGS is nonzero, pass it to the shell as more
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arguments. */
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void run_shell ( const char *shell, int loginshell, const char *command, const char **additional_args )
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void run_shell ( const char *shell, int loginshell, const char *command, const char **additional_args
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#ifdef CONFIG_SELINUX
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, security_id_t sid
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#endif
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)
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{
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const char **args;
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int argno = 1;
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@ -71,6 +77,11 @@ void run_shell ( const char *shell, int loginshell, const char *command, const c
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args [argno++] = *additional_args;
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}
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args [argno] = 0;
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#ifdef CONFIG_SELINUX
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if(sid)
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execve_secure(shell, (char **) args, environ, sid);
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else
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#endif
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execv ( shell, (char **) args );
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bb_perror_msg_and_die ( "cannot run %s", shell );
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}
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@ -16,7 +16,12 @@
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#include <time.h>
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#include "busybox.h"
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|
||||
#ifdef CONFIG_SELINUX
|
||||
#include <flask_util.h>
|
||||
#include <get_sid_list.h>
|
||||
#include <proc_secure.h>
|
||||
#include <fs_secure.h>
|
||||
#endif
|
||||
|
||||
#ifdef CONFIG_FEATURE_U_W_TMP
|
||||
// import from utmp.c
|
||||
@ -73,6 +78,10 @@ extern int login_main(int argc, char **argv)
|
||||
int opt_fflag = 0;
|
||||
char *opt_host = 0;
|
||||
int alarmstarted = 0;
|
||||
#ifdef CONFIG_SELINUX
|
||||
int flask_enabled = is_flask_enabled();
|
||||
security_id_t sid = 0, old_tty_sid, new_tty_sid;
|
||||
#endif
|
||||
|
||||
username[0]=0;
|
||||
amroot = ( getuid ( ) == 0 );
|
||||
@ -217,6 +226,36 @@ auth_ok:
|
||||
#ifdef CONFIG_FEATURE_U_W_TMP
|
||||
setutmp ( username, tty );
|
||||
#endif
|
||||
#ifdef CONFIG_SELINUX
|
||||
if (flask_enabled)
|
||||
{
|
||||
struct stat st;
|
||||
|
||||
if (get_default_sid(username, 0, &sid))
|
||||
{
|
||||
fprintf(stderr, "Unable to get SID for %s\n", username);
|
||||
exit(1);
|
||||
}
|
||||
if (stat_secure(tty, &st, &old_tty_sid))
|
||||
{
|
||||
fprintf(stderr, "stat_secure(%.100s) failed: %.100s\n", tty, strerror(errno));
|
||||
return EXIT_FAILURE;
|
||||
}
|
||||
if (security_change_sid (sid, old_tty_sid, SECCLASS_CHR_FILE, &new_tty_sid) != 0)
|
||||
{
|
||||
fprintf(stderr, "security_change_sid(%.100s) failed: %.100s\n", tty, strerror(errno));
|
||||
return EXIT_FAILURE;
|
||||
}
|
||||
if(chsid(tty, new_tty_sid) != 0)
|
||||
{
|
||||
fprintf(stderr, "chsid(%.100s, %d) failed: %.100s\n", tty, new_tty_sid, strerror(errno));
|
||||
return EXIT_FAILURE;
|
||||
}
|
||||
}
|
||||
else
|
||||
sid = 0;
|
||||
#endif
|
||||
|
||||
if ( *tty != '/' )
|
||||
snprintf ( full_tty, sizeof( full_tty ) - 1, "/dev/%s", tty);
|
||||
else
|
||||
@ -239,7 +278,11 @@ auth_ok:
|
||||
if ( pw-> pw_uid == 0 )
|
||||
syslog ( LOG_INFO, "root login %s\n", fromhost );
|
||||
|
||||
run_shell ( pw-> pw_shell, 1, 0, 0 ); /* exec the shell finally. */
|
||||
run_shell ( pw-> pw_shell, 1, 0, 0
|
||||
#ifdef CONFIG_SELINUX
|
||||
, sid
|
||||
#endif
|
||||
); /* exec the shell finally. */
|
||||
|
||||
return EXIT_FAILURE;
|
||||
}
|
||||
|
||||
@ -156,7 +156,11 @@ int su_main ( int argc, char **argv )
|
||||
|
||||
change_identity ( pw );
|
||||
setup_environment ( opt_shell, opt_loginshell, !opt_preserve, pw );
|
||||
run_shell ( opt_shell, opt_loginshell, opt_command, (const char**)opt_args );
|
||||
run_shell ( opt_shell, opt_loginshell, opt_command, (const char**)opt_args
|
||||
#ifdef CONFIG_SELINUX
|
||||
, 0
|
||||
#endif
|
||||
);
|
||||
|
||||
return EXIT_FAILURE;
|
||||
}
|
||||
|
||||
33
procps/ps.c
33
procps/ps.c
@ -31,6 +31,11 @@
|
||||
#include <termios.h>
|
||||
#include <sys/ioctl.h>
|
||||
#include "busybox.h"
|
||||
#ifdef CONFIG_SELINUX
|
||||
#include <fs_secure.h>
|
||||
#include <ss.h>
|
||||
#include <flask_util.h> /* for is_flask_enabled() */
|
||||
#endif
|
||||
|
||||
static const int TERMINAL_WIDTH = 79; /* not 80 in case terminal has linefold bug */
|
||||
|
||||
@ -47,6 +52,13 @@ extern int ps_main(int argc, char **argv)
|
||||
#define terminal_width TERMINAL_WIDTH
|
||||
#endif
|
||||
|
||||
#ifdef CONFIG_SELINUX
|
||||
int use_selinux = 0;
|
||||
security_id_t sid;
|
||||
if(is_flask_enabled() && argv[1] && !strcmp(argv[1], "-c") )
|
||||
use_selinux = 1;
|
||||
#endif
|
||||
|
||||
|
||||
#ifdef CONFIG_FEATURE_AUTOWIDTH
|
||||
ioctl(fileno(stdout), TIOCGWINSZ, &win);
|
||||
@ -54,10 +66,31 @@ extern int ps_main(int argc, char **argv)
|
||||
terminal_width = win.ws_col - 1;
|
||||
#endif
|
||||
|
||||
#ifdef CONFIG_SELINUX
|
||||
if(use_selinux)
|
||||
printf(" PID Context Stat Command\n");
|
||||
else
|
||||
#endif
|
||||
printf(" PID Uid VmSize Stat Command\n");
|
||||
#ifdef CONFIG_SELINUX
|
||||
while ((p = procps_scan(1, use_selinux, &sid)) != 0) {
|
||||
#else
|
||||
while ((p = procps_scan(1)) != 0) {
|
||||
#endif
|
||||
char *namecmd = p->cmd;
|
||||
|
||||
#ifdef CONFIG_SELINUX
|
||||
if(use_selinux)
|
||||
{
|
||||
char sbuf[128];
|
||||
len = sizeof(sbuf);
|
||||
if(security_sid_to_context(sid, (security_context_t)&sbuf, &len))
|
||||
strcpy(sbuf, "unknown");
|
||||
|
||||
len = printf("%5d %-32s %s ", p->pid, sbuf, p->state);
|
||||
}
|
||||
else
|
||||
#endif
|
||||
if(p->rss == 0)
|
||||
len = printf("%5d %-8s %s ", p->pid, p->user, p->state);
|
||||
else
|
||||
|
||||
@ -501,7 +501,11 @@ int top_main(int argc, char **argv)
|
||||
/* read process IDs & status for all the processes */
|
||||
procps_status_t * p;
|
||||
|
||||
#ifdef CONFIG_SELINUX
|
||||
while ((p = procps_scan(0, 0, NULL) ) != 0) {
|
||||
#else
|
||||
while ((p = procps_scan(0)) != 0) {
|
||||
#endif
|
||||
int n = ntop;
|
||||
|
||||
top = xrealloc(top, (++ntop)*sizeof(procps_status_t));
|
||||
|
||||
@ -106,6 +106,13 @@ config CONFIG_FEATURE_SUID_CONFIG_QUIET
|
||||
help
|
||||
Please submit a patch to add help text for this item.
|
||||
|
||||
config CONFIG_SELINUX
|
||||
bool "Support NSA Security Enhanced Linux"
|
||||
default n
|
||||
help
|
||||
Enable support for SE Linux in applets ls, ps, and id. Also provide
|
||||
the option of compiling in SE Linux applets.
|
||||
|
||||
endmenu
|
||||
|
||||
menu 'Build Options'
|
||||
|
||||
Loading…
Reference in New Issue
Block a user