File 0617-erts-Cap-file-times-to-9999-12-31-23-59-59... of Package erlang

Overview Repositories Revisions Requests Users Attributes Meta

File 0617-erts-Cap-file-times-to-9999-12-31-23-59-59.patch of Package erlang (Revision 2b7f631fe5821f577e2de7203216335f)

Currently displaying revision 2b7f631fe5821f577e2de7203216335f , Show latest

From 039e5a7bb81b62f1900a2662a69060286db274f1 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?John=20H=C3=B6gberg?= <john@erlang.org>
Date: Thu, 1 Dec 2022 14:11:00 +0100
Subject: [PATCH 2/2] erts: Cap file times to {{9999,12,31},{23,59,59}}

This ensures that we don't crash hard when given garbage file times
on Windows.
---
 erts/emulator/nifs/common/prim_file_nif.c | 9 ++++++---
 erts/emulator/nifs/common/prim_file_nif.h | 7 ++++++-
 2 files changed, 12 insertions(+), 4 deletions(-)

diff --git a/erts/emulator/nifs/common/prim_file_nif.c b/erts/emulator/nifs/common/prim_file_nif.c
index 48b5329773..4bf3959ce7 100644
--- a/erts/emulator/nifs/common/prim_file_nif.c
+++ b/erts/emulator/nifs/common/prim_file_nif.c
@@ -997,9 +997,12 @@ static ERL_NIF_TERM build_file_info(ErlNifEnv *env, efile_fileinfo_t *info) {
         enif_make_uint64(env, info->size),
         efile_filetype_to_atom(info->type),
         efile_access_to_atom(info->access),
-        enif_make_int64(env, MAX(EFILE_MIN_FILETIME, info->a_time)),
-        enif_make_int64(env, MAX(EFILE_MIN_FILETIME, info->m_time)),
-        enif_make_int64(env, MAX(EFILE_MIN_FILETIME, info->c_time)),
+        enif_make_int64(env,
+            MIN(EFILE_MAX_FILETIME, MAX(EFILE_MIN_FILETIME, info->a_time))),
+        enif_make_int64(env,
+            MIN(EFILE_MAX_FILETIME, MAX(EFILE_MIN_FILETIME, info->m_time))),
+        enif_make_int64(env,
+            MIN(EFILE_MAX_FILETIME, MAX(EFILE_MIN_FILETIME, info->c_time))),
         enif_make_uint(env, info->mode),
         enif_make_uint(env, info->links),
         enif_make_uint(env, info->major_device),
diff --git a/erts/emulator/nifs/common/prim_file_nif.h b/erts/emulator/nifs/common/prim_file_nif.h
index 452d6c0658..488bf2feb2 100644
--- a/erts/emulator/nifs/common/prim_file_nif.h
+++ b/erts/emulator/nifs/common/prim_file_nif.h
@@ -94,7 +94,12 @@ typedef struct {
 /* The smallest value that can be converted freely between universal, local,
  * and POSIX time, as required by read_file_info/2. Corresponds to
  * {{1902,1,1},{0,0,0}} */
-#define EFILE_MIN_FILETIME -2145916800
+#define EFILE_MIN_FILETIME (-2145916800LL)
+
+/* The largest value that can be converted freely between universal, local,
+ * and POSIX time, as required by read_file_info/2. Corresponds to
+ * {{9999,12,31},{23,59,59}} */
+#define EFILE_MAX_FILETIME (253402300799LL)
 
 /* Initializes an efile_data_t; must be used in efile_open on success. */
 #define EFILE_INIT_RESOURCE(__d, __modes) do { \
-- 
2.35.3

Places

File 0617-erts-Cap-file-times-to-9999-12-31-23-59-59.patch of Package erlang (Revision 2b7f631fe5821f577e2de7203216335f)

Places