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Diffstat (limited to 'fs/namei.c')
-rw-r--r--fs/namei.c41
1 files changed, 18 insertions, 23 deletions
diff --git a/fs/namei.c b/fs/namei.c
index a856e7f7b6e3..aa30d19e9edd 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -1797,8 +1797,6 @@ static int path_init(int dfd, const char *name, unsigned int flags,
1797 struct nameidata *nd, struct file **fp) 1797 struct nameidata *nd, struct file **fp)
1798{ 1798{
1799 int retval = 0; 1799 int retval = 0;
1800 int fput_needed;
1801 struct file *file;
1802 1800
1803 nd->last_type = LAST_ROOT; /* if there are only slashes... */ 1801 nd->last_type = LAST_ROOT; /* if there are only slashes... */
1804 nd->flags = flags | LOOKUP_JUMPED; 1802 nd->flags = flags | LOOKUP_JUMPED;
@@ -1850,44 +1848,41 @@ static int path_init(int dfd, const char *name, unsigned int flags,
1850 get_fs_pwd(current->fs, &nd->path); 1848 get_fs_pwd(current->fs, &nd->path);
1851 } 1849 }
1852 } else { 1850 } else {
1851 struct fd f = fdget_raw(dfd);
1853 struct dentry *dentry; 1852 struct dentry *dentry;
1854 1853
1855 file = fget_raw_light(dfd, &fput_needed); 1854 if (!f.file)
1856 retval = -EBADF; 1855 return -EBADF;
1857 if (!file)
1858 goto out_fail;
1859 1856
1860 dentry = file->f_path.dentry; 1857 dentry = f.file->f_path.dentry;
1861 1858
1862 if (*name) { 1859 if (*name) {
1863 retval = -ENOTDIR; 1860 if (!S_ISDIR(dentry->d_inode->i_mode)) {
1864 if (!S_ISDIR(dentry->d_inode->i_mode)) 1861 fdput(f);
1865 goto fput_fail; 1862 return -ENOTDIR;
1863 }
1866 1864
1867 retval = inode_permission(dentry->d_inode, MAY_EXEC); 1865 retval = inode_permission(dentry->d_inode, MAY_EXEC);
1868 if (retval) 1866 if (retval) {
1869 goto fput_fail; 1867 fdput(f);
1868 return retval;
1869 }
1870 } 1870 }
1871 1871
1872 nd->path = file->f_path; 1872 nd->path = f.file->f_path;
1873 if (flags & LOOKUP_RCU) { 1873 if (flags & LOOKUP_RCU) {
1874 if (fput_needed) 1874 if (f.need_put)
1875 *fp = file; 1875 *fp = f.file;
1876 nd->seq = __read_seqcount_begin(&nd->path.dentry->d_seq); 1876 nd->seq = __read_seqcount_begin(&nd->path.dentry->d_seq);
1877 lock_rcu_walk(); 1877 lock_rcu_walk();
1878 } else { 1878 } else {
1879 path_get(&file->f_path); 1879 path_get(&nd->path);
1880 fput_light(file, fput_needed); 1880 fdput(f);
1881 } 1881 }
1882 } 1882 }
1883 1883
1884 nd->inode = nd->path.dentry->d_inode; 1884 nd->inode = nd->path.dentry->d_inode;
1885 return 0; 1885 return 0;
1886
1887fput_fail:
1888 fput_light(file, fput_needed);
1889out_fail:
1890 return retval;
1891} 1886}
1892 1887
1893static inline int lookup_last(struct nameidata *nd, struct path *path) 1888static inline int lookup_last(struct nameidata *nd, struct path *path)
@@ -3971,7 +3966,7 @@ EXPORT_SYMBOL(user_path_at);
3971EXPORT_SYMBOL(follow_down_one); 3966EXPORT_SYMBOL(follow_down_one);
3972EXPORT_SYMBOL(follow_down); 3967EXPORT_SYMBOL(follow_down);
3973EXPORT_SYMBOL(follow_up); 3968EXPORT_SYMBOL(follow_up);
3974EXPORT_SYMBOL(get_write_access); /* binfmt_aout */ 3969EXPORT_SYMBOL(get_write_access); /* nfsd */
3975EXPORT_SYMBOL(getname); 3970EXPORT_SYMBOL(getname);
3976EXPORT_SYMBOL(lock_rename); 3971EXPORT_SYMBOL(lock_rename);
3977EXPORT_SYMBOL(lookup_one_len); 3972EXPORT_SYMBOL(lookup_one_len);