uselib: add missing MNT_NOEXEC check

[sfrench/cifs-2.6.git] / fs / exec.c

diff --git a/fs/exec.c b/fs/exec.c
index 955a8eb66d7061af552121766f9b1edc241d2ca6..f20561ff4528f21ad7a36d35d56513346c5f740b 100644 (file)
--- a/fs/exec.c
+++ b/fs/exec.c
@@ -60,7 +60,7 @@
 #endif
 
 int core_uses_pid;
-char core_pattern[128] = "core";
+char core_pattern[CORENAME_MAX_SIZE] = "core";
 int suid_dumpable = 0;
 
 EXPORT_SYMBOL(suid_dumpable);
@@ -134,6 +134,9 @@ asmlinkage long sys_uselib(const char __user * library)
        if (error)
                goto out;
 
+       error = -EACCES;
+       if (nd.mnt->mnt_flags & MNT_NOEXEC)
+               goto exit;
        error = -EINVAL;
        if (!S_ISREG(nd.dentry->d_inode->i_mode))
                goto exit;
@@ -1264,8 +1267,6 @@ int set_binfmt(struct linux_binfmt *new)
 
 EXPORT_SYMBOL(set_binfmt);
 
-#define CORENAME_MAX_SIZE 64
-
 /* format_corename will inspect the pattern parameter, and output a
  * name into corename, which must have space for at least
  * CORENAME_MAX_SIZE bytes plus one byte for the zero terminator.
@@ -1495,6 +1496,8 @@ int do_coredump(long signr, int exit_code, struct pt_regs * regs)
        int flag = 0;
        int ispipe = 0;
 
+       audit_core_dumps(signr);
+
        binfmt = current->binfmt;
        if (!binfmt || !binfmt->core_dump)
                goto fail;