Commit 78dcf734 authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge branch 'work.mount' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 

Pull ->s_options removal from Al Viro:
 "Preparations for fsmount/fsopen stuff (coming next cycle). Everything
  gets moved to explicit ->show_options(), killing ->s_options off +
  some cosmetic bits around fs/namespace.c and friends. Basically, the
  stuff needed to work with fsmount series with minimum of conflicts
  with other work.

  It's not strictly required for this merge window, but it would reduce
  the PITA during the coming cycle, so it would be nice to have those
  bits and pieces out of the way"

* 'work.mount' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  isofs: Fix isofs_show_options()
  VFS: Kill off s_options and helpers
  orangefs: Implement show_options
  9p: Implement show_options
  isofs: Implement show_options
  afs: Implement show_options
  affs: Implement show_options
  befs: Implement show_options
  spufs: Implement show_options
  bpf: Implement show_options
  ramfs: Implement show_options
  pstore: Implement show_options
  omfs: Implement show_options
  hugetlbfs: Implement show_options
  VFS: Don't use save/replace_mount_options if not using generic_show_options
  VFS: Provide empty name qstr
  VFS: Make get_filesystem() return the affected filesystem
  VFS: Clean up whitespace in fs/namespace.c and fs/super.c
  Provide a function to create a NUL-terminated string from unterminated data
parents 93ff8185 fdb254db

Documentation/filesystems/vfs.txt

+0 −6
Original line number Diff line number Diff line
@@ -1225,12 +1225,6 @@ The underlying reason for the above rules is to make sure, that a 
mount can be accurately replicated (e.g. umounting and mounting again)

based on the information found in /proc/mounts.



A simple method of saving options at mount/remount time and showing

them is provided with the save_mount_options() and

generic_show_options() helper functions.  Please note, that using

these may have drawbacks.  For more info see header comments for these

functions in fs/namespace.c.



Resources

=========

arch/powerpc/platforms/cell/spufs/inode.c

+19 −3
Original line number Diff line number Diff line
@@ -605,6 +605,24 @@ static const match_table_t spufs_tokens = { 
	{ Opt_err,    NULL  },

};



static int spufs_show_options(struct seq_file *m, struct dentry *root)

{

	struct spufs_sb_info *sbi = spufs_get_sb_info(root->d_sb);

	struct inode *inode = root->d_inode;



	if (!uid_eq(inode->i_uid, GLOBAL_ROOT_UID))

		seq_printf(m, ",uid=%u",

			   from_kuid_munged(&init_user_ns, inode->i_uid));

	if (!gid_eq(inode->i_gid, GLOBAL_ROOT_GID))

		seq_printf(m, ",gid=%u",

			   from_kgid_munged(&init_user_ns, inode->i_gid));

	if ((inode->i_mode & S_IALLUGO) != 0775)

		seq_printf(m, ",mode=%o", inode->i_mode);

	if (sbi->debug)

		seq_puts(m, ",debug");

	return 0;

}



static int

spufs_parse_options(struct super_block *sb, char *options, struct inode *root)

{
@@ -724,11 +742,9 @@ spufs_fill_super(struct super_block *sb, void *data, int silent) 
		.destroy_inode = spufs_destroy_inode,

		.statfs = simple_statfs,

		.evict_inode = spufs_evict_inode,

		.show_options = generic_show_options,

		.show_options = spufs_show_options,

	};



	save_mount_options(sb, data);



	info = kzalloc(sizeof(*info), GFP_KERNEL);

	if (!info)

		return -ENOMEM;

fs/9p/v9fs.c

+61 −0
Original line number Diff line number Diff line
@@ -33,6 +33,7 @@ 
#include <linux/parser.h>

#include <linux/idr.h>

#include <linux/slab.h>

#include <linux/seq_file.h>

#include <net/9p/9p.h>

#include <net/9p/client.h>

#include <net/9p/transport.h>
@@ -82,6 +83,13 @@ static const match_table_t tokens = { 
	{Opt_err, NULL}

};



static const char *const v9fs_cache_modes[nr__p9_cache_modes] = {

	[CACHE_NONE]	= "none",

	[CACHE_MMAP]	= "mmap",

	[CACHE_LOOSE]	= "loose",

	[CACHE_FSCACHE]	= "fscache",

};



/* Interpret mount options for cache mode */

static int get_cache_mode(char *s)

{
@@ -104,6 +112,58 @@ static int get_cache_mode(char *s) 
	return version;

}



/*

 * Display the mount options in /proc/mounts.

 */

int v9fs_show_options(struct seq_file *m, struct dentry *root)

{

	struct v9fs_session_info *v9ses = root->d_sb->s_fs_info;



	if (v9ses->debug)

		seq_printf(m, ",debug=%x", v9ses->debug);

	if (!uid_eq(v9ses->dfltuid, V9FS_DEFUID))

		seq_printf(m, ",dfltuid=%u",

			   from_kuid_munged(&init_user_ns, v9ses->dfltuid));

	if (!gid_eq(v9ses->dfltgid, V9FS_DEFGID))

		seq_printf(m, ",dfltgid=%u",

			   from_kgid_munged(&init_user_ns, v9ses->dfltgid));

	if (v9ses->afid != ~0)

		seq_printf(m, ",afid=%u", v9ses->afid);

	if (strcmp(v9ses->uname, V9FS_DEFUSER) != 0)

		seq_printf(m, ",uname=%s", v9ses->uname);

	if (strcmp(v9ses->aname, V9FS_DEFANAME) != 0)

		seq_printf(m, ",aname=%s", v9ses->aname);

	if (v9ses->nodev)

		seq_puts(m, ",nodevmap");

	if (v9ses->cache)

		seq_printf(m, ",%s", v9fs_cache_modes[v9ses->cache]);

#ifdef CONFIG_9P_FSCACHE

	if (v9ses->cachetag && v9ses->cache == CACHE_FSCACHE)

		seq_printf(m, ",cachetag=%s", v9ses->cachetag);

#endif



	switch (v9ses->flags & V9FS_ACCESS_MASK) {

	case V9FS_ACCESS_USER:

		seq_puts(m, ",access=user");

		break;

	case V9FS_ACCESS_ANY:

		seq_puts(m, ",access=any");

		break;

	case V9FS_ACCESS_CLIENT:

		seq_puts(m, ",access=client");

		break;

	case V9FS_ACCESS_SINGLE:

		seq_printf(m, ",access=%u",

			   from_kuid_munged(&init_user_ns, v9ses->uid));

		break;

	}



	if (v9ses->flags & V9FS_POSIX_ACL)

		seq_puts(m, ",posixacl");



	return p9_show_client_options(m, v9ses->clnt);

}



/**

 * v9fs_parse_options - parse mount options into session structure

 * @v9ses: existing v9fs session information
@@ -230,6 +290,7 @@ static int v9fs_parse_options(struct v9fs_session_info *v9ses, char *opts) 
			break;

		case Opt_cachetag:

#ifdef CONFIG_9P_FSCACHE

			kfree(v9ses->cachetag);

			v9ses->cachetag = match_strdup(&args[0]);

#endif

			break;

fs/9p/v9fs.h

+3 −0
Original line number Diff line number Diff line
@@ -67,6 +67,7 @@ enum p9_cache_modes { 
	CACHE_MMAP,

	CACHE_LOOSE,

	CACHE_FSCACHE,

	nr__p9_cache_modes

};



/**
@@ -137,6 +138,8 @@ static inline struct v9fs_inode *V9FS_I(const struct inode *inode) 
	return container_of(inode, struct v9fs_inode, vfs_inode);

}



extern int v9fs_show_options(struct seq_file *m, struct dentry *root);



struct p9_fid *v9fs_session_init(struct v9fs_session_info *, const char *,

									char *);

extern void v9fs_session_close(struct v9fs_session_info *v9ses);

fs/9p/vfs_super.c

+2 −4
Original line number Diff line number Diff line
@@ -33,7 +33,6 @@ 
#include <linux/string.h>

#include <linux/inet.h>

#include <linux/pagemap.h>

#include <linux/seq_file.h>

#include <linux/mount.h>

#include <linux/idr.h>

#include <linux/sched.h>
@@ -104,7 +103,6 @@ v9fs_fill_super(struct super_block *sb, struct v9fs_session_info *v9ses, 
		sb->s_flags |= MS_POSIXACL;

#endif



	save_mount_options(sb, data);

	return 0;

}
@@ -349,7 +347,7 @@ static const struct super_operations v9fs_super_ops = { 
	.destroy_inode = v9fs_destroy_inode,

	.statfs = simple_statfs,

	.evict_inode = v9fs_evict_inode,

	.show_options = generic_show_options,

	.show_options = v9fs_show_options,

	.umount_begin = v9fs_umount_begin,

	.write_inode = v9fs_write_inode,

};
@@ -360,7 +358,7 @@ static const struct super_operations v9fs_super_ops_dotl = { 
	.statfs = v9fs_statfs,

	.drop_inode = v9fs_drop_inode,

	.evict_inode = v9fs_evict_inode,

	.show_options = generic_show_options,

	.show_options = v9fs_show_options,

	.umount_begin = v9fs_umount_begin,

	.write_inode = v9fs_write_inode_dotl,

};

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