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qnx4: convert qnx4 to use the new mount api

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Convert the qnx4 filesystem to use the new mount API.

Tested mount, umount, and remount using a qnx4 boot image.

Signed-off-by: Bill O'Donnell <bodonnel@redhat.com>
Link: https://lore.kernel.org/r/20240229161649.800957-1-bodonnel@redhat.com
Acked-by: Anders Larsen <al@alarsen.net>
Signed-off-by: Christian Brauner <brauner@kernel.org>
This commit is contained in:
Bill O'Donnell 2024-02-29 10:15:38 -06:00 committed by Christian Brauner
parent 24a8b7bfb9
commit 6b91bfa165
No known key found for this signature in database
GPG Key ID: 91C61BC06578DCA2
1 changed files with 30 additions and 17 deletions
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47
fs/qnx4/inode.c
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@ -21,6 +21,7 @@
#include <linux/buffer_head.h>
#include <linux/writeback.h>
#include <linux/statfs.h>
#include <linux/fs_context.h>
#include "qnx4.h"
#define QNX4_VERSION 4
@ -30,28 +31,33 @@ static const struct super_operations qnx4_sops;
static struct inode *qnx4_alloc_inode(struct super_block *sb);
static void qnx4_free_inode(struct inode *inode);
static int qnx4_remount(struct super_block *sb, int *flags, char *data);
static int qnx4_statfs(struct dentry *, struct kstatfs *);
static int qnx4_get_tree(struct fs_context *fc);
static const struct super_operations qnx4_sops =
{
.alloc_inode = qnx4_alloc_inode,
.free_inode = qnx4_free_inode,
.statfs = qnx4_statfs,
.remount_fs = qnx4_remount,
};
static int qnx4_remount(struct super_block *sb, int *flags, char *data)
static int qnx4_reconfigure(struct fs_context *fc)
{
struct super_block *sb = fc->root->d_sb;
struct qnx4_sb_info *qs;
sync_filesystem(sb);
qs = qnx4_sb(sb);
qs->Version = QNX4_VERSION;
*flags |= SB_RDONLY;
fc->sb_flags |= SB_RDONLY;
return 0;
}
static const struct fs_context_operations qnx4_context_opts = {
.get_tree = qnx4_get_tree,
.reconfigure = qnx4_reconfigure,
};
static int qnx4_get_block( struct inode *inode, sector_t iblock, struct buffer_head *bh, int create )
{
unsigned long phys;
@ -183,12 +189,13 @@ static const char *qnx4_checkroot(struct super_block *sb,
return "bitmap file not found.";
}
static int qnx4_fill_super(struct super_block *s, void *data, int silent)
static int qnx4_fill_super(struct super_block *s, struct fs_context *fc)
{
struct buffer_head *bh;
struct inode *root;
const char *errmsg;
struct qnx4_sb_info *qs;
int silent = fc->sb_flags & SB_SILENT;
qs = kzalloc(sizeof(struct qnx4_sb_info), GFP_KERNEL);
if (!qs)
@ -216,7 +223,7 @@ static int qnx4_fill_super(struct super_block *s, void *data, int silent)
errmsg = qnx4_checkroot(s, (struct qnx4_super_block *) bh->b_data);
brelse(bh);
if (errmsg != NULL) {
if (!silent)
if (!silent)
printk(KERN_ERR "qnx4: %s\n", errmsg);
return -EINVAL;
}
@ -235,6 +242,18 @@ static int qnx4_fill_super(struct super_block *s, void *data, int silent)
return 0;
}
static int qnx4_get_tree(struct fs_context *fc)
{
return get_tree_bdev(fc, qnx4_fill_super);
}
static int qnx4_init_fs_context(struct fs_context *fc)
{
fc->ops = &qnx4_context_opts;
return 0;
}
static void qnx4_kill_sb(struct super_block *sb)
{
struct qnx4_sb_info *qs = qnx4_sb(sb);
@ -376,18 +395,12 @@ static void destroy_inodecache(void)
kmem_cache_destroy(qnx4_inode_cachep);
}
static struct dentry *qnx4_mount(struct file_system_type *fs_type,
int flags, const char *dev_name, void *data)
{
return mount_bdev(fs_type, flags, dev_name, data, qnx4_fill_super);
}
static struct file_system_type qnx4_fs_type = {
.owner = THIS_MODULE,
.name = "qnx4",
.mount = qnx4_mount,
.kill_sb = qnx4_kill_sb,
.fs_flags = FS_REQUIRES_DEV,
.owner = THIS_MODULE,
.name = "qnx4",
.kill_sb = qnx4_kill_sb,
.fs_flags = FS_REQUIRES_DEV,
.init_fs_context = qnx4_init_fs_context,
};
MODULE_ALIAS_FS("qnx4");