test/rpc: test passing mapfiles via RPC [WIP

Signed-off-by: Michał Mirosław <emmir@google.com>
osctobe · Jan 9, 2024 · 1a27d9e · 1a27d9e
1 parent a699099
commit 1a27d9e
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Showing 2 changed files with 9 additions and 3 deletions.
diff --git a/criu/include/fault-injection.h b/criu/include/fault-injection.h
@@ -19,6 +19,7 @@ enum faults {
 	FI_HUGE_ANON_SHMEM_ID = 132,
 	FI_CANNOT_MAP_VDSO = 133,
 	FI_CORRUPT_EXTREGS = 134,
+	FI_EPERM_MAPFILES = 135,
 	FI_MAX,
 };
 

diff --git a/criu/proc_parse.c b/criu/proc_parse.c
@@ -398,9 +398,14 @@ static int vma_open_mapfile(pid_t pid, int dir, const char *fname, struct vma_ar
 		 */
 		flags = O_RDONLY;
 
-	*vm_file_fd = openat(dir, path, flags);
-	if (*vm_file_fd >= 0)
-		return 0;
+	if (!fault_injected(FI_EPERM_MAPFILES)) {
+		*vm_file_fd = openat(dir, path, flags);
+		if (*vm_file_fd >= 0)
+			return 0;
+	} else {
+		*vm_file_fd = -1;
+		errno = EPERM;
+	}
 
 	if (errno == ENOENT)
 		/* Just mapping w/o map_files link */