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SELinux: use define for number of bits in the mnt flags mask 

We had this random hard coded value of '8' in the code (I put it there)
for the number of bits to check for mount options.  This is stupid.  Instead
use the #define we already have which tells us the number of mount
options.

Signed-off-by: Eric Paris <eparis@redhat.com>
This commit is contained in:
Eric Paris 2012-08-24 15:59:00 -04:00
parent d355987f47
commit af8e50cc7d
1 changed files with 4 additions and 1 deletions
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5
security/selinux/hooks.c
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@ -466,9 +466,12 @@ static int selinux_get_mnt_opts(const struct super_block *sb,
if (!ss_initialized)
return -EINVAL;
/* make sure we always check enough bits to cover the mask */
BUILD_BUG_ON(SE_MNTMASK >= (1 << NUM_SEL_MNT_OPTS));
tmp = sbsec->flags & SE_MNTMASK;
/* count the number of mount options for this sb */
for (i = 0; i < 8; i++) {
for (i = 0; i < NUM_SEL_MNT_OPTS; i++) {
if (tmp & 0x01)
opts->num_mnt_opts++;
tmp >>= 1;