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tarfs: throw EROFS on create

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K. Lange 2021-11-17 19:18:56 +09:00
parent 4c816c1433
commit fb30aae90d
1 changed files with 7 additions and 0 deletions
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7
kernel/vfs/tarfs.c
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@ -7,6 +7,7 @@
* of the NCSA / University of Illinois License - see LICENSE.md
* Copyright (C) 2018 K. Lange
*/
#include <errno.h>
#include <kernel/types.h>
#include <kernel/vfs.h>
#include <kernel/printf.h>
@ -358,6 +359,10 @@ static ssize_t readlink_tarfs(fs_node_t * node, char * buf, size_t size) {
}
static int create_ret_rofs(fs_node_t *parent, char *name, mode_t permission) {
return -EROFS;
}
static fs_node_t * file_from_ustar(struct tarfs * self, struct ustar * file, unsigned int offset) {
fs_node_t * fs = malloc(sizeof(fs_node_t));
memset(fs, 0, sizeof(fs_node_t));
@ -377,6 +382,7 @@ static fs_node_t * file_from_ustar(struct tarfs * self, struct ustar * file, uns
fs->flags = FS_DIRECTORY;
fs->readdir = readdir_tarfs;
fs->finddir = finddir_tarfs;
fs->create = create_ret_rofs;
} else if (file->type[0] == '1') {
//debug_print(ERROR, "Hardlink detected");
/* go through file and find target, reassign inode to point to that */
@ -479,6 +485,7 @@ static fs_node_t * tar_mount(const char * device, const char * mount_path) {
root->mask = 0555;
root->readdir = readdir_tar_root;
root->finddir = finddir_tar_root;
root->create = create_ret_rofs;
root->flags = FS_DIRECTORY;
root->device = self;