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| author |   Al Viro <viro@zeniv.linux.org.uk> | 2009-03-30 07:35:18 -0400 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2009-03-31 23:00:26 -0400 |
| commit | f1191b50ec11c8e2ca766d6d99eb5bb9d2c084a3 (patch) | |
| tree | 7eae2387269bd3d2d4c6f334568f9fea6518c787 | |
| parent | New locking/refcounting for fs_struct (diff) | |
| download | linux-dev-f1191b50ec11c8e2ca766d6d99eb5bb9d2c084a3.tar.xz linux-dev-f1191b50ec11c8e2ca766d6d99eb5bb9d2c084a3.zip | |
check_unsafe_exec() doesn't care about signal handlers sharing
... since we'll unshare sighand anyway
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| -rw-r--r-- | fs/exec.c | 7 |
1 files changed, 2 insertions, 5 deletions
diff --git a/fs/exec.c b/fs/exec.c index 07a059664b73..614991bf0c87 100644 --- a/fs/exec.c +++ b/fs/exec.c @@ -1060,23 +1060,20 @@ int check_unsafe_exec(struct linux_binprm *bprm) { struct task_struct *p = current, *t; unsigned long flags; - unsigned n_fs, n_sighand; + unsigned n_fs; int res = 0; bprm->unsafe = tracehook_unsafe_exec(p); n_fs = 1; - n_sighand = 1; write_lock(&p->fs->lock); lock_task_sighand(p, &flags); for (t = next_thread(p); t != p; t = next_thread(t)) { if (t->fs == p->fs) n_fs++; - n_sighand++; } - if (p->fs->users > n_fs || - atomic_read(&p->sighand->count) > n_sighand) { + if (p->fs->users > n_fs) { bprm->unsafe |= LSM_UNSAFE_SHARE; } else { if (p->fs->in_exec) |