Merge 4.4.187 into android-4.4

[sagit-ice-cold/kernel_xiaomi_msm8998.git] / fs / open.c

diff --git a/fs/open.c b/fs/open.c
index 5ba3fca..b7e2889 100644 (file)
--- a/fs/open.c
+++ b/fs/open.c
@@ -34,8 +34,8 @@
 
 #include "internal.h"
 
-int do_truncate(struct dentry *dentry, loff_t length, unsigned int time_attrs,
-       struct file *filp)
+int do_truncate2(struct vfsmount *mnt, struct dentry *dentry, loff_t length,
+               unsigned int time_attrs, struct file *filp)
 {
        int ret;
        struct iattr newattrs;
@@ -60,17 +60,24 @@ int do_truncate(struct dentry *dentry, loff_t length, unsigned int time_attrs,
 
        mutex_lock(&dentry->d_inode->i_mutex);
        /* Note any delegations or leases have already been broken: */
-       ret = notify_change(dentry, &newattrs, NULL);
+       ret = notify_change2(mnt, dentry, &newattrs, NULL);
        mutex_unlock(&dentry->d_inode->i_mutex);
        return ret;
 }
+int do_truncate(struct dentry *dentry, loff_t length, unsigned int time_attrs,
+       struct file *filp)
+{
+       return do_truncate2(NULL, dentry, length, time_attrs, filp);
+}
 
 long vfs_truncate(struct path *path, loff_t length)
 {
        struct inode *inode;
+       struct vfsmount *mnt;
        long error;
 
        inode = path->dentry->d_inode;
+       mnt = path->mnt;
 
        /* For directories it's -EISDIR, for other non-regulars - -EINVAL */
        if (S_ISDIR(inode->i_mode))
@@ -82,7 +89,7 @@ long vfs_truncate(struct path *path, loff_t length)
        if (error)
                goto out;
 
-       error = inode_permission(inode, MAY_WRITE);
+       error = inode_permission2(mnt, inode, MAY_WRITE);
        if (error)
                goto mnt_drop_write_and_out;
 
@@ -106,7 +113,7 @@ long vfs_truncate(struct path *path, loff_t length)
        if (!error)
                error = security_path_truncate(path);
        if (!error)
-               error = do_truncate(path->dentry, length, 0, NULL);
+               error = do_truncate2(mnt, path->dentry, length, 0, NULL);
 
 put_write_and_out:
        put_write_access(inode);
@@ -155,6 +162,7 @@ static long do_sys_ftruncate(unsigned int fd, loff_t length, int small)
 {
        struct inode *inode;
        struct dentry *dentry;
+       struct vfsmount *mnt;
        struct fd f;
        int error;
 
@@ -171,6 +179,7 @@ static long do_sys_ftruncate(unsigned int fd, loff_t length, int small)
                small = 0;
 
        dentry = f.file->f_path.dentry;
+       mnt = f.file->f_path.mnt;
        inode = dentry->d_inode;
        error = -EINVAL;
        if (!S_ISREG(inode->i_mode) || !(f.file->f_mode & FMODE_WRITE))
@@ -190,7 +199,7 @@ static long do_sys_ftruncate(unsigned int fd, loff_t length, int small)
        if (!error)
                error = security_path_truncate(&f.file->f_path);
        if (!error)
-               error = do_truncate(dentry, length, ATTR_MTIME|ATTR_CTIME, f.file);
+               error = do_truncate2(mnt, dentry, length, ATTR_MTIME|ATTR_CTIME, f.file);
        sb_end_write(inode->i_sb);
 out_putf:
        fdput(f);
@@ -340,6 +349,7 @@ SYSCALL_DEFINE3(faccessat, int, dfd, const char __user *, filename, int, mode)
        struct cred *override_cred;
        struct path path;
        struct inode *inode;
+       struct vfsmount *mnt;
        int res;
        unsigned int lookup_flags = LOOKUP_FOLLOW;
 
@@ -389,6 +399,7 @@ retry:
                goto out;
 
        inode = d_backing_inode(path.dentry);
+       mnt = path.mnt;
 
        if ((mode & MAY_EXEC) && S_ISREG(inode->i_mode)) {
                /*
@@ -400,7 +411,7 @@ retry:
                        goto out_path_release;
        }
 
-       res = inode_permission(inode, mode | MAY_ACCESS);
+       res = inode_permission2(mnt, inode, mode | MAY_ACCESS);
        /* SuS v2 requires we report a read only fs too */
        if (res || !(mode & S_IWOTH) || special_file(inode->i_mode))
                goto out_path_release;
@@ -444,7 +455,7 @@ retry:
        if (error)
                goto out;
 
-       error = inode_permission(path.dentry->d_inode, MAY_EXEC | MAY_CHDIR);
+       error = inode_permission2(path.mnt, path.dentry->d_inode, MAY_EXEC | MAY_CHDIR);
        if (error)
                goto dput_and_out;
 
@@ -464,6 +475,7 @@ SYSCALL_DEFINE1(fchdir, unsigned int, fd)
 {
        struct fd f = fdget_raw(fd);
        struct inode *inode;
+       struct vfsmount *mnt;
        int error = -EBADF;
 
        error = -EBADF;
@@ -471,12 +483,13 @@ SYSCALL_DEFINE1(fchdir, unsigned int, fd)
                goto out;
 
        inode = file_inode(f.file);
+       mnt = f.file->f_path.mnt;
 
        error = -ENOTDIR;
        if (!S_ISDIR(inode->i_mode))
                goto out_putf;
 
-       error = inode_permission(inode, MAY_EXEC | MAY_CHDIR);
+       error = inode_permission2(mnt, inode, MAY_EXEC | MAY_CHDIR);
        if (!error)
                set_fs_pwd(current->fs, &f.file->f_path);
 out_putf:
@@ -495,7 +508,7 @@ retry:
        if (error)
                goto out;
 
-       error = inode_permission(path.dentry->d_inode, MAY_EXEC | MAY_CHDIR);
+       error = inode_permission2(path.mnt, path.dentry->d_inode, MAY_EXEC | MAY_CHDIR);
        if (error)
                goto dput_and_out;
 
@@ -535,7 +548,7 @@ retry_deleg:
                goto out_unlock;
        newattrs.ia_mode = (mode & S_IALLUGO) | (inode->i_mode & ~S_IALLUGO);
        newattrs.ia_valid = ATTR_MODE | ATTR_CTIME;
-       error = notify_change(path->dentry, &newattrs, &delegated_inode);
+       error = notify_change2(path->mnt, path->dentry, &newattrs, &delegated_inode);
 out_unlock:
        mutex_unlock(&inode->i_mutex);
        if (delegated_inode) {
@@ -615,7 +628,7 @@ retry_deleg:
        mutex_lock(&inode->i_mutex);
        error = security_path_chown(path, uid, gid);
        if (!error)
-               error = notify_change(path->dentry, &newattrs, &delegated_inode);
+               error = notify_change2(path->mnt, path->dentry, &newattrs, &delegated_inode);
        mutex_unlock(&inode->i_mutex);
        if (delegated_inode) {
                error = break_deleg_wait(&delegated_inode);