Make sure that we keep it extensible and well-formed.
Signed-off-by: Christian Brauner <brauner@xxxxxxxxxx>
---
fs/coredump.c | 12 ++++++++++--
1 file changed, 10 insertions(+), 2 deletions(-)
diff --git a/fs/coredump.c b/fs/coredump.c
index 42ceb9db2a5a..70e37435eca9 100644
--- a/fs/coredump.c
+++ b/fs/coredump.c
@@ -1399,9 +1399,17 @@ static inline bool check_coredump_socket(void)
if (current->nsproxy->mnt_ns != init_task.nsproxy->mnt_ns)
return false;
- /* Must be an absolute path or the socket request. */
- if (*(core_pattern + 1) != '/' && *(core_pattern + 1) != '@')
+ /* Must be an absolute path... */
+ if (core_pattern[1] != '/') {
+ /* ... or the socket request protocol... */
+ if (core_pattern[1] != '@')
+ return false;
+ /* ... and if so must be an absolute path. */
+ if (core_pattern[2] != '/')
+ return false;
+ /* Anything else is unsupported. */
return false;
+ }
return true;
}
--
2.47.2
