Patch from Claus Klein to increase, and make more apparent

the hard coded limit on the number of mounts

1 files changed, 4 insertions, 2 deletions

diff --git a/libbb/mtab.c b/libbb/mtab.c
index 528422567..b1f74c476 100644
--- a/libbb/mtab.c
+++ b/libbb/mtab.c
@@ -27,11 +27,12 @@
 #include <mntent.h>
 #include "libbb.h"
 
+#define MTAB_MAX_ENTRIES 40
 static const int MS_RDONLY = 1; /* Mount read-only.  */
 
 void erase_mtab(const char *name)
 {
-        struct mntent entries[20];
+        struct mntent entries[MTAB_MAX_ENTRIES];
         int count = 0;
         FILE *mountTable = setmntent(bb_path_mtab_file, "r");
         struct mntent *m;
@@ -44,7 +45,8 @@ void erase_mtab(const char *name)
                 return;
         }
 
-        while ((m = getmntent(mountTable)) != 0) {
+        while (((m = getmntent(mountTable)) != 0) && (count < MTAB_MAX_ENTRIES))
+        {
                 entries[count].mnt_fsname = strdup(m->mnt_fsname);
                 entries[count].mnt_dir = strdup(m->mnt_dir);
                 entries[count].mnt_type = strdup(m->mnt_type);