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Even more strict ext2fs write disabling

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This commit is contained in:
Kevin Lange 2013-06-12 22:24:02 -07:00
parent d213172368
commit 4c2801beeb
1 changed files with 12 additions and 0 deletions
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12
kernel/fs/ext2_disk.c
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@ -361,6 +361,10 @@ void ext2_create(fs_node_t *parent, char *name, uint16_t permission) {
* Message will be displayed in the terminal for success or failure. * Message will be displayed in the terminal for success or failure.
*/ */
void ext2_mkdir(fs_node_t *parent, char *name, uint16_t permission) { void ext2_mkdir(fs_node_t *parent, char *name, uint16_t permission) {
#if DISABLE_EXT2_WRITES
debug_print(WARNING, "Attempt to write to EXT2 device blocked.");
return;
#endif
uint16_t mode = permission | EXT2_S_IFDIR; uint16_t mode = permission | EXT2_S_IFDIR;
ext2_inodetable_t *parent_inode = ext2_disk_inode(parent->inode); ext2_inodetable_t *parent_inode = ext2_disk_inode(parent->inode);
@ -438,6 +442,10 @@ ext2_inodetable_t *ext2_disk_alloc_inode
uint16_t mode, uint16_t mode,
uint32_t *inode_no uint32_t *inode_no
) { ) {
#if DISABLE_EXT2_WRITES
debug_print(WARNING, "Attempt to write to EXT2 device blocked.");
return 0;
#endif
if ((parent->mode & EXT2_S_IFDIR) == 0 || name == NULL) { if ((parent->mode & EXT2_S_IFDIR) == 0 || name == NULL) {
kprintf("[kernel/ext2] No name or bad parent.\n"); kprintf("[kernel/ext2] No name or bad parent.\n");
return NULL; return NULL;
@ -580,6 +588,10 @@ ext2_inodetable_t *ext2_disk_inode(uint32_t inode) {
* Write the 'inode' into the inode table at position 'index'. * Write the 'inode' into the inode table at position 'index'.
*/ */
void ext2_disk_write_inode(ext2_inodetable_t *inode, uint32_t index) { void ext2_disk_write_inode(ext2_inodetable_t *inode, uint32_t index) {
#if DISABLE_EXT2_WRITES
debug_print(WARNING, "Attempt to write to EXT2 device blocked.");
return;
#endif
uint32_t group = index / ext2_disk_inodes_per_group; uint32_t group = index / ext2_disk_inodes_per_group;
if (group > BGDS) { if (group > BGDS) {
return; return;