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Diffstat (limited to 'fs/sdcardfs/main.c')
-rw-r--r--fs/sdcardfs/main.c95
1 files changed, 52 insertions, 43 deletions
diff --git a/fs/sdcardfs/main.c b/fs/sdcardfs/main.c
index 7a8eae29e44d..953d2156d2e9 100644
--- a/fs/sdcardfs/main.c
+++ b/fs/sdcardfs/main.c
@@ -29,7 +29,7 @@ enum {
Opt_gid,
Opt_debug,
Opt_mask,
- Opt_multiuser, // May need?
+ Opt_multiuser,
Opt_userid,
Opt_reserved_mb,
Opt_err,
@@ -72,6 +72,7 @@ static int parse_options(struct super_block *sb, char *options, int silent,
while ((p = strsep(&options, ",")) != NULL) {
int token;
+
if (!*p)
continue;
@@ -116,19 +117,17 @@ static int parse_options(struct super_block *sb, char *options, int silent,
break;
/* unknown option */
default:
- if (!silent) {
- printk( KERN_ERR "Unrecognized mount option \"%s\" "
- "or missing value", p);
- }
+ if (!silent)
+ pr_err("Unrecognized mount option \"%s\" or missing value", p);
return -EINVAL;
}
}
if (*debug) {
- printk( KERN_INFO "sdcardfs : options - debug:%d\n", *debug);
- printk( KERN_INFO "sdcardfs : options - uid:%d\n",
+ pr_info("sdcardfs : options - debug:%d\n", *debug);
+ pr_info("sdcardfs : options - uid:%d\n",
opts->fs_low_uid);
- printk( KERN_INFO "sdcardfs : options - gid:%d\n",
+ pr_info("sdcardfs : options - gid:%d\n",
opts->fs_low_gid);
}
@@ -148,6 +147,7 @@ int parse_options_remount(struct super_block *sb, char *options, int silent,
while ((p = strsep(&options, ",")) != NULL) {
int token;
+
if (!*p)
continue;
@@ -173,22 +173,20 @@ int parse_options_remount(struct super_block *sb, char *options, int silent,
case Opt_fsuid:
case Opt_fsgid:
case Opt_reserved_mb:
- printk( KERN_WARNING "Option \"%s\" can't be changed during remount\n", p);
+ pr_warn("Option \"%s\" can't be changed during remount\n", p);
break;
/* unknown option */
default:
- if (!silent) {
- printk( KERN_ERR "Unrecognized mount option \"%s\" "
- "or missing value", p);
- }
+ if (!silent)
+ pr_err("Unrecognized mount option \"%s\" or missing value", p);
return -EINVAL;
}
}
if (debug) {
- printk( KERN_INFO "sdcardfs : options - debug:%d\n", debug);
- printk( KERN_INFO "sdcardfs : options - gid:%d\n", vfsopts->gid);
- printk( KERN_INFO "sdcardfs : options - mask:%d\n", vfsopts->mask);
+ pr_info("sdcardfs : options - debug:%d\n", debug);
+ pr_info("sdcardfs : options - gid:%d\n", vfsopts->gid);
+ pr_info("sdcardfs : options - mask:%d\n", vfsopts->mask);
}
return 0;
@@ -223,8 +221,8 @@ static struct dentry *sdcardfs_d_alloc_root(struct super_block *sb)
#endif
DEFINE_MUTEX(sdcardfs_super_list_lock);
-LIST_HEAD(sdcardfs_super_list);
EXPORT_SYMBOL_GPL(sdcardfs_super_list_lock);
+LIST_HEAD(sdcardfs_super_list);
EXPORT_SYMBOL_GPL(sdcardfs_super_list);
/*
@@ -242,31 +240,30 @@ static int sdcardfs_read_super(struct vfsmount *mnt, struct super_block *sb,
struct sdcardfs_vfsmount_options *mnt_opt = mnt->data;
struct inode *inode;
- printk(KERN_INFO "sdcardfs version 2.0\n");
+ pr_info("sdcardfs version 2.0\n");
if (!dev_name) {
- printk(KERN_ERR
- "sdcardfs: read_super: missing dev_name argument\n");
+ pr_err("sdcardfs: read_super: missing dev_name argument\n");
err = -EINVAL;
goto out;
}
- printk(KERN_INFO "sdcardfs: dev_name -> %s\n", dev_name);
- printk(KERN_INFO "sdcardfs: options -> %s\n", (char *)raw_data);
- printk(KERN_INFO "sdcardfs: mnt -> %p\n", mnt);
+ pr_info("sdcardfs: dev_name -> %s\n", dev_name);
+ pr_info("sdcardfs: options -> %s\n", (char *)raw_data);
+ pr_info("sdcardfs: mnt -> %p\n", mnt);
/* parse lower path */
err = kern_path(dev_name, LOOKUP_FOLLOW | LOOKUP_DIRECTORY,
&lower_path);
if (err) {
- printk(KERN_ERR "sdcardfs: error accessing lower directory '%s'\n", dev_name);
+ pr_err("sdcardfs: error accessing lower directory '%s'\n", dev_name);
goto out;
}
/* allocate superblock private data */
sb->s_fs_info = kzalloc(sizeof(struct sdcardfs_sb_info), GFP_KERNEL);
if (!SDCARDFS_SB(sb)) {
- printk(KERN_CRIT "sdcardfs: read_super: out of memory\n");
+ pr_crit("sdcardfs: read_super: out of memory\n");
err = -ENOMEM;
goto out_free;
}
@@ -275,7 +272,7 @@ static int sdcardfs_read_super(struct vfsmount *mnt, struct super_block *sb,
/* parse options */
err = parse_options(sb, raw_data, silent, &debug, mnt_opt, &sb_info->options);
if (err) {
- printk(KERN_ERR "sdcardfs: invalid options\n");
+ pr_err("sdcardfs: invalid options\n");
goto out_freesbi;
}
@@ -328,14 +325,15 @@ static int sdcardfs_read_super(struct vfsmount *mnt, struct super_block *sb,
/* setup permission policy */
sb_info->obbpath_s = kzalloc(PATH_MAX, GFP_KERNEL);
mutex_lock(&sdcardfs_super_list_lock);
- if(sb_info->options.multiuser) {
- setup_derived_state(d_inode(sb->s_root), PERM_PRE_ROOT, sb_info->options.fs_user_id, AID_ROOT, false, d_inode(sb->s_root));
+ if (sb_info->options.multiuser) {
+ setup_derived_state(d_inode(sb->s_root), PERM_PRE_ROOT,
+ sb_info->options.fs_user_id, AID_ROOT,
+ false, d_inode(sb->s_root));
snprintf(sb_info->obbpath_s, PATH_MAX, "%s/obb", dev_name);
- /*err = prepare_dir(sb_info->obbpath_s,
- sb_info->options.fs_low_uid,
- sb_info->options.fs_low_gid, 00755);*/
} else {
- setup_derived_state(d_inode(sb->s_root), PERM_ROOT, sb_info->options.fs_user_id, AID_ROOT, false, d_inode(sb->s_root));
+ setup_derived_state(d_inode(sb->s_root), PERM_ROOT,
+ sb_info->options.fs_user_id, AID_ROOT,
+ false, d_inode(sb->s_root));
snprintf(sb_info->obbpath_s, PATH_MAX, "%s/Android/obb", dev_name);
}
fixup_tmp_permissions(d_inode(sb->s_root));
@@ -344,7 +342,7 @@ static int sdcardfs_read_super(struct vfsmount *mnt, struct super_block *sb,
mutex_unlock(&sdcardfs_super_list_lock);
if (!silent)
- printk(KERN_INFO "sdcardfs: mounted on top of %s type %s\n",
+ pr_info("sdcardfs: mounted on top of %s type %s\n",
dev_name, lower_sb->s_type->name);
goto out; /* all is well */
@@ -368,8 +366,10 @@ out:
/* A feature which supports mount_nodev() with options */
static struct dentry *mount_nodev_with_options(struct vfsmount *mnt,
- struct file_system_type *fs_type, int flags, const char *dev_name, void *data,
- int (*fill_super)(struct vfsmount *, struct super_block *, const char *, void *, int))
+ struct file_system_type *fs_type, int flags,
+ const char *dev_name, void *data,
+ int (*fill_super)(struct vfsmount *, struct super_block *,
+ const char *, void *, int))
{
int error;
@@ -401,19 +401,22 @@ static struct dentry *sdcardfs_mount(struct vfsmount *mnt,
raw_data, sdcardfs_read_super);
}
-static struct dentry *sdcardfs_mount_wrn(struct file_system_type *fs_type, int flags,
- const char *dev_name, void *raw_data)
+static struct dentry *sdcardfs_mount_wrn(struct file_system_type *fs_type,
+ int flags, const char *dev_name, void *raw_data)
{
WARN(1, "sdcardfs does not support mount. Use mount2.\n");
return ERR_PTR(-EINVAL);
}
-void *sdcardfs_alloc_mnt_data(void) {
+void *sdcardfs_alloc_mnt_data(void)
+{
return kmalloc(sizeof(struct sdcardfs_vfsmount_options), GFP_KERNEL);
}
-void sdcardfs_kill_sb(struct super_block *sb) {
+void sdcardfs_kill_sb(struct super_block *sb)
+{
struct sdcardfs_sb_info *sbi;
+
if (sb->s_magic == SDCARDFS_SUPER_MAGIC) {
sbi = SDCARDFS_SB(sb);
mutex_lock(&sdcardfs_super_list_lock);
@@ -432,6 +435,7 @@ static struct file_system_type sdcardfs_fs_type = {
.kill_sb = sdcardfs_kill_sb,
.fs_flags = 0,
};
+MODULE_ALIAS_FS(SDCARDFS_NAME);
static int __init init_sdcardfs_fs(void)
{
@@ -467,10 +471,15 @@ static void __exit exit_sdcardfs_fs(void)
pr_info("Completed sdcardfs module unload\n");
}
-MODULE_AUTHOR("Erez Zadok, Filesystems and Storage Lab, Stony Brook University"
- " (http://www.fsl.cs.sunysb.edu/)");
-MODULE_DESCRIPTION("Wrapfs " SDCARDFS_VERSION
- " (http://wrapfs.filesystems.org/)");
+/* Original wrapfs authors */
+MODULE_AUTHOR("Erez Zadok, Filesystems and Storage Lab, Stony Brook University (http://www.fsl.cs.sunysb.edu/)");
+
+/* Original sdcardfs authors */
+MODULE_AUTHOR("Woojoong Lee, Daeho Jeong, Kitae Lee, Yeongjin Gil System Memory Lab., Samsung Electronics");
+
+/* Current maintainer */
+MODULE_AUTHOR("Daniel Rosenberg, Google");
+MODULE_DESCRIPTION("Sdcardfs " SDCARDFS_VERSION);
MODULE_LICENSE("GPL");
module_init(init_sdcardfs_fs);
generated by cgit v1.2.3 (git 2.25.1) at 2025-10-22 23:33:18 +0000