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| author | Paul Moore <paul.moore@hp.com> | 2006-10-11 19:10:48 -0400 |
|---|---|---|
| committer | David S. Miller <davem@sunset.davemloft.net> | 2006-10-15 23:14:15 -0700 |
| commit | bf0edf39296097f20c5fcc4919ed7d339194bd75 (patch) | |
| tree | 0cde65c275cd7bab51c306cde3bf80487655f6ba /security/selinux/ss/ebitmap.c | |
| parent | 044a68ed8a692f643cf3c0a54c380a922584f34f (diff) | |
| download | kernel_samsung_smdk4412-bf0edf39296097f20c5fcc4919ed7d339194bd75.zip kernel_samsung_smdk4412-bf0edf39296097f20c5fcc4919ed7d339194bd75.tar.gz kernel_samsung_smdk4412-bf0edf39296097f20c5fcc4919ed7d339194bd75.tar.bz2 | |
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.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/security/selinux/ss/ebitmap.c b/security/selinux/ss/ebitmap.c index cfed1d3..d539346 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), |