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authorLinus Torvalds <torvalds@linux-foundation.org>2015-02-18 01:56:45 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2015-02-18 01:56:45 +0300
commit50652963eae6afe13678dc84d789a174306a4df7 (patch)
tree44d6bc6c2cd938cf59db7ba2b7e514d9b3665f40 /fs/proc
parente2b74f232e84dfccd0047eb47545b1d028df8ff1 (diff)
parent87b95ce0964c016ede92763be9c164e49f1019e9 (diff)
downloadlinux-50652963eae6afe13678dc84d789a174306a4df7.tar.xz
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull misc VFS updates from Al Viro: "This cycle a lot of stuff sits on topical branches, so I'll be sending more or less one pull request per branch. This is the first pile; more to follow in a few. In this one are several misc commits from early in the cycle (before I went for separate branches), plus the rework of mntput/dput ordering on umount, switching to use of fs_pin instead of convoluted games in namespace_unlock()" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: switch the IO-triggering parts of umount to fs_pin new fs_pin killing logics allow attaching fs_pin to a group not associated with some superblock get rid of the second argument of acct_kill() take count and rcu_head out of fs_pin dcache: let the dentry count go down to zero without taking d_lock pull bumping refcount into ->kill() kill pin_put() mode_t whack-a-mole: chelsio file->f_path.dentry is pinned down for as long as the file is open... get rid of lustre_dump_dentry() gut proc_register() a bit kill d_validate() ncpfs: get rid of d_validate() nonsense selinuxfs: don't open-code d_genocide()
Diffstat (limited to 'fs/proc')
-rw-r--r--fs/proc/generic.c25
1 files changed, 8 insertions, 17 deletions
diff --git a/fs/proc/generic.c b/fs/proc/generic.c
index de14e46fd807..3309f59d421b 100644
--- a/fs/proc/generic.c
+++ b/fs/proc/generic.c
@@ -350,29 +350,12 @@ static int proc_register(struct proc_dir_entry * dir, struct proc_dir_entry * dp
if (ret)
return ret;
- if (S_ISDIR(dp->mode)) {
- dp->proc_fops = &proc_dir_operations;
- dp->proc_iops = &proc_dir_inode_operations;
- dir->nlink++;
- } else if (S_ISLNK(dp->mode)) {
- dp->proc_iops = &proc_link_inode_operations;
- } else if (S_ISREG(dp->mode)) {
- BUG_ON(dp->proc_fops == NULL);
- dp->proc_iops = &proc_file_inode_operations;
- } else {
- WARN_ON(1);
- proc_free_inum(dp->low_ino);
- return -EINVAL;
- }
-
spin_lock(&proc_subdir_lock);
dp->parent = dir;
if (pde_subdir_insert(dir, dp) == false) {
WARN(1, "proc_dir_entry '%s/%s' already registered\n",
dir->name, dp->name);
spin_unlock(&proc_subdir_lock);
- if (S_ISDIR(dp->mode))
- dir->nlink--;
proc_free_inum(dp->low_ino);
return -EEXIST;
}
@@ -431,6 +414,7 @@ struct proc_dir_entry *proc_symlink(const char *name,
ent->data = kmalloc((ent->size=strlen(dest))+1, GFP_KERNEL);
if (ent->data) {
strcpy((char*)ent->data,dest);
+ ent->proc_iops = &proc_link_inode_operations;
if (proc_register(parent, ent) < 0) {
kfree(ent->data);
kfree(ent);
@@ -456,8 +440,12 @@ struct proc_dir_entry *proc_mkdir_data(const char *name, umode_t mode,
ent = __proc_create(&parent, name, S_IFDIR | mode, 2);
if (ent) {
ent->data = data;
+ ent->proc_fops = &proc_dir_operations;
+ ent->proc_iops = &proc_dir_inode_operations;
+ parent->nlink++;
if (proc_register(parent, ent) < 0) {
kfree(ent);
+ parent->nlink--;
ent = NULL;
}
}
@@ -493,6 +481,8 @@ struct proc_dir_entry *proc_create_data(const char *name, umode_t mode,
return NULL;
}
+ BUG_ON(proc_fops == NULL);
+
if ((mode & S_IALLUGO) == 0)
mode |= S_IRUGO;
pde = __proc_create(&parent, name, mode, 1);
@@ -500,6 +490,7 @@ struct proc_dir_entry *proc_create_data(const char *name, umode_t mode,
goto out;
pde->proc_fops = proc_fops;
pde->data = data;
+ pde->proc_iops = &proc_file_inode_operations;
if (proc_register(parent, pde) < 0)
goto out_free;
return pde;