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filetypes.c filesize() guard against negative error values

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buffer size is copied to an unsigned int for core_alloc

Change-Id: I7b9ccab79554e55b22d39501ccb779036913258a
This commit is contained in:
William Wilgus 2021-08-02 22:32:15 -04:00
parent 1fc4a17e1c
commit 382b52b120
1 changed files with 12 additions and 4 deletions
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16
apps/filetypes.c
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@ -185,7 +185,8 @@ static int filetype_count = 0;
static unsigned char highest_attr = 0; static unsigned char highest_attr = 0;
static int viewer_count = 0; static int viewer_count = 0;
static int strdup_handle, strdup_bufsize, strdup_cur_idx; static int strdup_handle, strdup_cur_idx;
static size_t strdup_bufsize;
static int move_callback(int handle, void* current, void* new) static int move_callback(int handle, void* current, void* new)
{ {
/*could compare to strdup_handle, but ops is only used once */ /*could compare to strdup_handle, but ops is only used once */
@ -353,13 +354,20 @@ void filetype_init(void)
if (fd < 0) if (fd < 0)
return; return;
strdup_bufsize = filesize(fd); off_t filesz = filesize(fd);
strdup_handle = core_alloc_ex("filetypes", strdup_bufsize, &ops);
if (strdup_handle <= 0) if (filesz > 0)
{
strdup_bufsize = (size_t)filesz;
strdup_handle = core_alloc_ex("filetypes", strdup_bufsize, &ops);
}
if (filesz <= 0 || strdup_handle <= 0)
{ {
close(fd); close(fd);
return; return;
} }
read_builtin_types(); read_builtin_types();
read_config(fd); read_config(fd);
close(fd); close(fd);