aboutsummaryrefslogtreecommitdiffstats
path: root/security/selinux/ss/ebitmap.c
diff options
context:
space:
mode:
authorPaul Moore <paul.moore@hp.com>2006-10-11 19:10:48 -0400
committerDavid S. Miller <davem@sunset.davemloft.net>2006-10-15 23:14:15 -0700
commitbf0edf39296097f20c5fcc4919ed7d339194bd75 (patch)
tree0cde65c275cd7bab51c306cde3bf80487655f6ba /security/selinux/ss/ebitmap.c
parentNetLabel: only deref the CIPSOv4 standard map fields when using standard mapping (diff)
downloadlinux-dev-bf0edf39296097f20c5fcc4919ed7d339194bd75.tar.xz
linux-dev-bf0edf39296097f20c5fcc4919ed7d339194bd75.zip
NetLabel: better error handling involving mls_export_cat()
Upon inspection it looked like the error handling for mls_export_cat() was rather poor. This patch addresses this by NULL'ing out kfree()'d pointers before returning and checking the return value of the function everywhere it is called. Signed-off-by: Paul Moore <paul.moore@hp.com> Signed-off-by: James Morris <jmorris@namei.org>
Diffstat (limited to 'security/selinux/ss/ebitmap.c')
-rw-r--r--security/selinux/ss/ebitmap.c8
1 files changed, 6 insertions, 2 deletions
diff --git a/security/selinux/ss/ebitmap.c b/security/selinux/ss/ebitmap.c
index cfed1d30fa6a..d539346ab3a2 100644
--- a/security/selinux/ss/ebitmap.c
+++ b/security/selinux/ss/ebitmap.c
@@ -93,11 +93,15 @@ int ebitmap_export(const struct ebitmap *src,
size_t bitmap_byte;
unsigned char bitmask;
+ if (src->highbit == 0) {
+ *dst = NULL;
+ *dst_len = 0;
+ return 0;
+ }
+
bitmap_len = src->highbit / 8;
if (src->highbit % 7)
bitmap_len += 1;
- if (bitmap_len == 0)
- return -EINVAL;
bitmap = kzalloc((bitmap_len & ~(sizeof(MAPTYPE) - 1)) +
sizeof(MAPTYPE),