From: Waldemar Kozaczuk <jwkozac...@gmail.com>
Committer: Waldemar Kozaczuk <jwkozac...@gmail.com>
Branch: master
Tweak open() and sys_open() to return EFAULT error when pathname null
Signed-off-by: Waldemar Kozaczuk <jwkozac...@gmail.com>
---
diff --git a/fs/vfs/main.cc b/fs/vfs/main.cc
--- a/fs/vfs/main.cc
+++ b/fs/vfs/main.cc
@@ -120,6 +120,11 @@ int open(const char *pathname, int flags, ...)
int fd, error;
int acc;
+ if (pathname == nullptr) {
+ error = EFAULT;
+ goto out_errno;
+ }
+
acc = 0;
switch (flags & O_ACCMODE) {
case O_RDONLY:
diff --git a/fs/vfs/vfs_syscalls.cc b/fs/vfs/vfs_syscalls.cc
--- a/fs/vfs/vfs_syscalls.cc
+++ b/fs/vfs/vfs_syscalls.cc
@@ -117,6 +117,10 @@ sys_open(char *path, int flags, mode_t mode, struct
file **fpp)
DPRINTF(VFSDB_SYSCALL, ("sys_open: path=%s flags=%x mode=%x\n",
path, flags, mode));
+ if (path == nullptr) {
+ return (EFAULT);
+ }
+
flags = fflags(flags);
if (flags & O_CREAT) {
error = namei(path, &dp);
--
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