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authorKentaro Takeda <takedakn@nttdata.co.jp>2009-02-05 17:18:11 +0900
committerJames Morris <jmorris@namei.org>2009-02-12 15:15:03 +1100
commitf9ce1f1cda8b73a36f47e424975a9dfa78b7840c (patch)
tree66138b33dbf627f99f5ec67e0e39ce15ab830080 /fs
parent523979adfa0b79d4e3aa053220c37a9233294206 (diff)
Add in_execve flag into task_struct.
This patch allows LSM modules to determine whether current process is in an execve operation or not so that they can behave differently while an execve operation is in progress. This patch is needed by TOMOYO. Please see another patch titled "LSM adapter functions." for backgrounds. Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: James Morris <jmorris@namei.org>
Diffstat (limited to 'fs')
-rw-r--r--fs/compat.c3
-rw-r--r--fs/exec.c3
2 files changed, 6 insertions, 0 deletions
diff --git a/fs/compat.c b/fs/compat.c
index 65a070e705ab..25589f8322f2 100644
--- a/fs/compat.c
+++ b/fs/compat.c
@@ -1402,6 +1402,7 @@ int compat_do_execve(char * filename,
retval = mutex_lock_interruptible(&current->cred_exec_mutex);
if (retval < 0)
goto out_free;
+ current->in_execve = 1;
retval = -ENOMEM;
bprm->cred = prepare_exec_creds();
@@ -1454,6 +1455,7 @@ int compat_do_execve(char * filename,
goto out;
/* execve succeeded */
+ current->in_execve = 0;
mutex_unlock(&current->cred_exec_mutex);
acct_update_integrals(current);
free_bprm(bprm);
@@ -1470,6 +1472,7 @@ out_file:
}
out_unlock:
+ current->in_execve = 0;
mutex_unlock(&current->cred_exec_mutex);
out_free:
diff --git a/fs/exec.c b/fs/exec.c
index febfd8ed6ad1..9881dc3bb488 100644
--- a/fs/exec.c
+++ b/fs/exec.c
@@ -1278,6 +1278,7 @@ int do_execve(char * filename,
retval = mutex_lock_interruptible(&current->cred_exec_mutex);
if (retval < 0)
goto out_free;
+ current->in_execve = 1;
retval = -ENOMEM;
bprm->cred = prepare_exec_creds();
@@ -1331,6 +1332,7 @@ int do_execve(char * filename,
goto out;
/* execve succeeded */
+ current->in_execve = 0;
mutex_unlock(&current->cred_exec_mutex);
acct_update_integrals(current);
free_bprm(bprm);
@@ -1349,6 +1351,7 @@ out_file:
}
out_unlock:
+ current->in_execve = 0;
mutex_unlock(&current->cred_exec_mutex);
out_free: