aboutsummaryrefslogtreecommitdiff
path: root/security/tomoyo/audit.c
diff options
context:
space:
mode:
authorTetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>2011-07-08 13:23:44 +0900
committerJames Morris <jmorris@namei.org>2011-07-11 11:05:33 +1000
commit2ca9bf453bdd478bcb6c01aa2d0bd4c2f4350563 (patch)
treeb9f6051059a2a90547a4501bf296b0cf3c9dbc76 /security/tomoyo/audit.c
parent8761afd49ebff8ae04c1a7888af090177441d07d (diff)
downloadlinux-linaro-stable-2ca9bf453bdd478bcb6c01aa2d0bd4c2f4350563.tar.gz
TOMOYO: Allow using executable's realpath and symlink's target as conditions.
This patch adds support for permission checks using executable file's realpath upon execve() and symlink's target upon symlink(). Hooks are in the last patch of this pathset. Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Signed-off-by: James Morris <jmorris@namei.org>
Diffstat (limited to 'security/tomoyo/audit.c')
-rw-r--r--security/tomoyo/audit.c21
1 files changed, 21 insertions, 0 deletions
diff --git a/security/tomoyo/audit.c b/security/tomoyo/audit.c
index 4973edd40718..b33a20accbef 100644
--- a/security/tomoyo/audit.c
+++ b/security/tomoyo/audit.c
@@ -140,6 +140,8 @@ char *tomoyo_init_log(struct tomoyo_request_info *r, int len, const char *fmt,
{
char *buf = NULL;
const char *header = NULL;
+ char *realpath = NULL;
+ const char *symlink = NULL;
int pos;
const char *domainname = r->domain->domainname->name;
header = tomoyo_print_header(r);
@@ -147,15 +149,34 @@ char *tomoyo_init_log(struct tomoyo_request_info *r, int len, const char *fmt,
return NULL;
/* +10 is for '\n' etc. and '\0'. */
len += strlen(domainname) + strlen(header) + 10;
+ if (r->ee) {
+ struct file *file = r->ee->bprm->file;
+ realpath = tomoyo_realpath_from_path(&file->f_path);
+ if (!realpath)
+ goto out;
+ /* +80 is for " exec={ realpath=\"%s\" }" */
+ len += strlen(realpath) + 80;
+ } else if (r->obj && r->obj->symlink_target) {
+ symlink = r->obj->symlink_target->name;
+ /* +18 is for " symlink.target=\"%s\"" */
+ len += 18 + strlen(symlink);
+ }
len = tomoyo_round2(len);
buf = kzalloc(len, GFP_NOFS);
if (!buf)
goto out;
len--;
pos = snprintf(buf, len, "%s", header);
+ if (realpath) {
+ pos += snprintf(buf + pos, len - pos,
+ " exec={ realpath=\"%s\" }", realpath);
+ } else if (symlink)
+ pos += snprintf(buf + pos, len - pos, " symlink.target=\"%s\"",
+ symlink);
pos += snprintf(buf + pos, len - pos, "\n%s\n", domainname);
vsnprintf(buf + pos, len - pos, fmt, args);
out:
+ kfree(realpath);
kfree(header);
return buf;
}