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procfs: avoid crashes on empty module, filesystem tables

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This commit is contained in:
K. Lange 2022-02-07 12:47:58 +09:00
parent 1ed8ba466c
commit 2c5a6db126
1 changed files with 2 additions and 0 deletions
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kernel/vfs/procfs.c
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@ -502,6 +502,7 @@ static ssize_t mounts_func(fs_node_t *node, off_t offset, size_t size, uint8_t *
static ssize_t modules_func(fs_node_t *node, off_t offset, size_t size, uint8_t *buffer) {
list_t * hash_keys = hashmap_keys(modules_get_list());
if (!hash_keys || !hash_keys->length) return 0;
char * buf = malloc(hash_keys->length * 512);
unsigned int soffset = 0;
foreach(_key, hash_keys) {
@ -531,6 +532,7 @@ extern hashmap_t * fs_types; /* from kernel/fs/vfs.c */
static ssize_t filesystems_func(fs_node_t *node, off_t offset, size_t size, uint8_t *buffer) {
list_t * hash_keys = hashmap_keys(fs_types);
if (!hash_keys || !hash_keys->length) return 0;
char * buf = malloc(hash_keys->length * 512);
unsigned int soffset = 0;
foreach(_key, hash_keys) {