1 files changed, 81 insertions, 13 deletions

diff --git a/coreutils/ls.c b/coreutils/ls.c
index 4a4956611..6245361e9 100644
--- a/coreutils/ls.c
+++ b/coreutils/ls.c
@@ -62,6 +62,11 @@ enum {
 #include <termios.h>
 #include <sys/ioctl.h>
 #include "busybox.h"
+#ifdef CONFIG_SELINUX
+#include <fs_secure.h>
+#include <flask_util.h>
+#include <ss.h>
+#endif
 
 #ifdef CONFIG_FEATURE_LS_TIMESTAMPS
 #include <time.h>
@@ -89,14 +94,15 @@ enum {
 #define LIST_NLINKS             (1U<<3)
 #define LIST_ID_NAME    (1U<<4)
 #define LIST_ID_NUMERIC (1U<<5)
-#define LIST_SIZE               (1U<<6)
-#define LIST_DEV                (1U<<7)
-#define LIST_DATE_TIME  (1U<<8)
-#define LIST_FULLTIME   (1U<<9)
-#define LIST_FILENAME   (1U<<10)
-#define LIST_SYMLINK    (1U<<11)
-#define LIST_FILETYPE   (1U<<12)
-#define LIST_EXEC               (1U<<13)
+#define LIST_CONTEXT    (1U<<6)
+#define LIST_SIZE               (1U<<7)
+#define LIST_DEV                (1U<<8)
+#define LIST_DATE_TIME  (1U<<9)
+#define LIST_FULLTIME   (1U<<10)
+#define LIST_FILENAME   (1U<<11)
+#define LIST_SYMLINK    (1U<<12)
+#define LIST_FILETYPE   (1U<<13)
+#define LIST_EXEC       (1U<<14)
 
 #define LIST_MASK       ((LIST_EXEC << 1) - 1)
 
@@ -179,6 +185,9 @@ struct dnode {			/* the basic node */
         char *name;                     /* the dir entry name */
         char *fullname;         /* the dir entry name */
         struct stat dstat;      /* the file stat info */
+#ifdef CONFIG_SELINUX
+        security_id_t sid;
+#endif
         struct dnode *next;     /* point at the next node */
 };
 typedef struct dnode dnode_t;
@@ -189,6 +198,10 @@ static int list_single(struct dnode *);
 
 static unsigned int all_fmt;
 
+#ifdef CONFIG_SELINUX
+static int is_flask_enabled_flag;
+#endif
+
 #ifdef CONFIG_FEATURE_AUTOWIDTH
 static unsigned short terminal_width = TERMINAL_WIDTH;
 static unsigned short tabstops = COLUMN_GAP;
@@ -203,26 +216,49 @@ static struct dnode *my_stat(char *fullname, char *name)
 {
         struct stat dstat;
         struct dnode *cur;
+#ifdef CONFIG_SELINUX
+        security_id_t sid;
+#endif
+        int rc;
 
 #ifdef CONFIG_FEATURE_LS_FOLLOWLINKS
         if (all_fmt & FOLLOW_LINKS) {
-                if (stat(fullname, &dstat)) {
+#ifdef CONFIG_SELINUX
+                if(is_flask_enabled_flag)
+                        rc = stat_secure(fullname, &dstat, &sid);
+                else
+#endif
+                        rc = stat(fullname, &dstat);
+                if(rc)
+                {
                         bb_perror_msg("%s", fullname);
                         status = EXIT_FAILURE;
                         return 0;
                 }
         } else
 #endif
-        if (lstat(fullname, &dstat)) {
-                bb_perror_msg("%s", fullname);
-                status = EXIT_FAILURE;
-        return 0;
+        {
+#ifdef CONFIG_SELINUX
+                if(is_flask_enabled_flag)
+                        rc = lstat_secure(fullname, &dstat, &sid);
+                else
+#endif
+                        rc = lstat(fullname, &dstat);
+                if(rc)
+                {
+                        bb_perror_msg("%s", fullname);
+                        status = EXIT_FAILURE;
+                        return 0;
+                }
         }
 
         cur = (struct dnode *) xmalloc(sizeof(struct dnode));
         cur->fullname = fullname;
         cur->name = name;
         cur->dstat = dstat;
+#ifdef CONFIG_SELINUX
+        cur->sid = sid;
+#endif
         return cur;
 }
 
@@ -451,6 +487,9 @@ static void showfiles(struct dnode **dn, int nfiles)
                 /* find the longest file name-  use that as the column width */
                 for (i = 0; i < nfiles; i++) {
                         int len = strlen(dn[i]->name) +
+#ifdef CONFIG_SELINUX
+                        ((all_fmt & LIST_CONTEXT) ? 33 : 0) +
+#endif
                         ((all_fmt & LIST_INO) ? 8 : 0) +
                         ((all_fmt & LIST_BLOCKS) ? 5 : 0);
                         if (column_width < len)
@@ -695,6 +734,21 @@ static int list_single(struct dnode *dn)
                         column += 13;
                         break;
 #endif
+#ifdef CONFIG_SELINUX
+                case LIST_CONTEXT:
+                        {
+                                char context[64];
+                                int len = sizeof(context);
+                                if(security_sid_to_context(dn->sid, context, &len))
+                                {
+                                        strcpy(context, "unknown");
+                                        len = 7;
+                                }
+                                printf("%-32s ", context);
+                                column += MAX(33, len);
+                        }
+                        break;
+#endif
                 case LIST_FILENAME:
 #ifdef CONFIG_FEATURE_LS_COLOR
                         errno = 0;
@@ -774,6 +828,9 @@ static const char ls_opts[] = "1AaCdgilnsx"
                                                  "h"
 #endif
                                                  "k"
+#ifdef CONFIG_SELINUX
+                                                "K"
+#endif
 #ifdef CONFIG_FEATURE_AUTOWIDTH
                                                  "T:w:"
 #endif
@@ -834,7 +891,12 @@ static const unsigned opt_flags[] = {
 #ifdef CONFIG_FEATURE_HUMAN_READABLE
 LS_DISP_HR,                                             /* h */
 #endif
+#ifndef CONFIG_SELINUX
         0,                                                      /* k - ingored */
+#else
+        LIST_CONTEXT,                           /* k */
+        LIST_MODEBITS|LIST_NLINKS|LIST_CONTEXT|LIST_SIZE|LIST_DATE_TIME, /* K */
+#endif
 };
 
 
@@ -849,6 +911,9 @@ extern int ls_main(int argc, char **argv)
         int opt;
         int oi, ac;
         char **av;
+#ifdef CONFIG_SELINUX
+        is_flask_enabled_flag = is_flask_enabled();
+#endif
 
 #ifdef CONFIG_FEATURE_AUTOWIDTH
         struct winsize win = { 0, 0, 0, 0 };
@@ -911,6 +976,9 @@ extern int ls_main(int argc, char **argv)
                         if (flags & TIME_MASK_TRIGGER) {
                                 all_fmt &= ~TIME_MASK;
                         }
+                        if (flags & LIST_CONTEXT) {
+                                all_fmt |= STYLE_SINGLE;
+                        }
 #ifdef CONFIG_FEATURE_HUMAN_READABLE
                         if (opt == 'l') {
                                 all_fmt &= ~LS_DISP_HR;