Previously all error conditions were ignored. Be nice, and set errno
when we should.
Signed-off-by: Erik Faye-Lund <kusmabite@xxxxxxxxx>
---
compat/mingw.c | 2 +-
compat/msvc.c | 28 +++++++++++++++++++++++++++-
2 files changed, 28 insertions(+), 2 deletions(-)
diff --git a/compat/mingw.c b/compat/mingw.c
index fdbf093..d8fd5d8 100644
--- a/compat/mingw.c
+++ b/compat/mingw.c
@@ -1584,7 +1584,7 @@ struct dirent *mingw_readdir(DIR *dir)
HANDLE handle;
struct mingw_DIR *mdir = (struct mingw_DIR*)dir;
- if (!dir->dd_handle) {
+ if (!dir || !dir->dd_handle) {
errno = EBADF; /* No set_errno for mingw */
return NULL;
}
diff --git a/compat/msvc.c b/compat/msvc.c
index 88c6093..199eb22 100644
--- a/compat/msvc.c
+++ b/compat/msvc.c
@@ -5,8 +5,29 @@
DIR *opendir(const char *name)
{
- int len = strlen(name);
+ DWORD attrs = GetFileAttributes(name);
+ int len;
DIR *p;
+
+ /* check for valid path */
+ if (attrs == INVALID_FILE_ATTRIBUTES) {
+ errno = ENOENT;
+ return NULL;
+ }
+
+ /* check if it's a directory */
+ if (!(attrs & FILE_ATTRIBUTE_DIRECTORY)) {
+ errno = ENOTDIR;
+ return NULL;
+ }
+
+ /* check that the pattern won't be too long for FindFirstFileA */
+ len = strlen(name);
+ if (len + 2 >= MAX_PATH) {
+ errno = ENAMETOOLONG;
+ return NULL;
+ }
+
p = malloc(sizeof(DIR) + len + 2);
if (!p)
return NULL;
@@ -21,6 +42,11 @@ DIR *opendir(const char *name)
}
int closedir(DIR *dir)
{
+ if (!dir) {
+ errno = EBADF;
+ return -1;
+ }
+
if (dir->dd_handle != (long)INVALID_HANDLE_VALUE)
FindClose((HANDLE)dir->dd_handle);
free(dir);
--
1.7.3.2.493.gc8738
--
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