Release 4.7 fs/ufs/namei.c
/*
* linux/fs/ufs/namei.c
*
* Migration to usage of "page cache" on May 2006 by
* Evgeniy Dushistov <dushistov@mail.ru> based on ext2 code base.
*
* Copyright (C) 1998
* Daniel Pirkl <daniel.pirkl@email.cz>
* Charles University, Faculty of Mathematics and Physics
*
* from
*
* linux/fs/ext2/namei.c
*
* Copyright (C) 1992, 1993, 1994, 1995
* Remy Card (card@masi.ibp.fr)
* Laboratoire MASI - Institut Blaise Pascal
* Universite Pierre et Marie Curie (Paris VI)
*
* from
*
* linux/fs/minix/namei.c
*
* Copyright (C) 1991, 1992 Linus Torvalds
*
* Big-endian to little-endian byte-swapping/bitmaps by
* David S. Miller (davem@caip.rutgers.edu), 1995
*/
#include <linux/time.h>
#include <linux/fs.h>
#include "ufs_fs.h"
#include "ufs.h"
#include "util.h"
static inline int ufs_add_nondir(struct dentry *dentry, struct inode *inode)
{
int err = ufs_add_link(dentry, inode);
if (!err) {
unlock_new_inode(inode);
d_instantiate(dentry, inode);
return 0;
}
inode_dec_link_count(inode);
unlock_new_inode(inode);
iput(inode);
return err;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| linus torvalds | linus torvalds | 36 | 53.73% | 1 | 25.00% |
| pre-git | pre-git | 20 | 29.85% | 1 | 25.00% |
| al viro | al viro | 10 | 14.93% | 1 | 25.00% |
| alexey dobriyan | alexey dobriyan | 1 | 1.49% | 1 | 25.00% |
| Total | 67 | 100.00% | 4 | 100.00% |
static struct dentry *ufs_lookup(struct inode * dir, struct dentry *dentry, unsigned int flags)
{
struct inode * inode = NULL;
ino_t ino;
if (dentry->d_name.len > UFS_MAXNAMLEN)
return ERR_PTR(-ENAMETOOLONG);
ino = ufs_inode_by_name(dir, &dentry->d_name);
if (ino)
inode = ufs_iget(dir->i_sb, ino);
return d_splice_alias(inode, dentry);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| pre-git | pre-git | 42 | 50.00% | 1 | 14.29% |
| linus torvalds | linus torvalds | 30 | 35.71% | 1 | 14.29% |
| al viro | al viro | 7 | 8.33% | 2 | 28.57% |
| alexey dobriyan | alexey dobriyan | 3 | 3.57% | 1 | 14.29% |
| trond myklebust | trond myklebust | 1 | 1.19% | 1 | 14.29% |
| david howells | david howells | 1 | 1.19% | 1 | 14.29% |
| Total | 84 | 100.00% | 7 | 100.00% |
/*
* By the time this is called, we already have created
* the directory cache entry for the new file, but it
* is so far negative - it has no inode.
*
* If the create succeeds, we fill in the inode information
* with d_instantiate().
*/
static int ufs_create (struct inode * dir, struct dentry * dentry, umode_t mode,
bool excl)
{
struct inode *inode;
inode = ufs_new_inode(dir, mode);
if (IS_ERR(inode))
return PTR_ERR(inode);
inode->i_op = &ufs_file_inode_operations;
inode->i_fop = &ufs_file_operations;
inode->i_mapping->a_ops = &ufs_aops;
mark_inode_dirty(inode);
return ufs_add_nondir(dentry, inode);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| pre-git | pre-git | 42 | 49.41% | 2 | 25.00% |
| linus torvalds | linus torvalds | 28 | 32.94% | 1 | 12.50% |
| al viro | al viro | 10 | 11.76% | 3 | 37.50% |
| evgeniy dushistov | evgeniy dushistov | 4 | 4.71% | 1 | 12.50% |
| trond myklebust | trond myklebust | 1 | 1.18% | 1 | 12.50% |
| Total | 85 | 100.00% | 8 | 100.00% |
static int ufs_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t rdev)
{
struct inode *inode;
int err;
if (!old_valid_dev(rdev))
return -EINVAL;
inode = ufs_new_inode(dir, mode);
err = PTR_ERR(inode);
if (!IS_ERR(inode)) {
init_special_inode(inode, mode, rdev);
ufs_set_inode_dev(inode->i_sb, UFS_I(inode), rdev);
mark_inode_dirty(inode);
err = ufs_add_nondir(dentry, inode);
}
return err;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| linus torvalds | linus torvalds | 51 | 47.22% | 1 | 11.11% |
| al viro | al viro | 26 | 24.07% | 3 | 33.33% |
| pre-git | pre-git | 20 | 18.52% | 2 | 22.22% |
| andries brouwer | andries brouwer | 6 | 5.56% | 2 | 22.22% |
| alex kiernan | alex kiernan | 5 | 4.63% | 1 | 11.11% |
| Total | 108 | 100.00% | 9 | 100.00% |
static int ufs_symlink (struct inode * dir, struct dentry * dentry,
const char * symname)
{
struct super_block * sb = dir->i_sb;
int err;
unsigned l = strlen(symname)+1;
struct inode * inode;
if (l > sb->s_blocksize)
return -ENAMETOOLONG;
inode = ufs_new_inode(dir, S_IFLNK | S_IRWXUGO);
err = PTR_ERR(inode);
if (IS_ERR(inode))
return err;
if (l > UFS_SB(sb)->s_uspi->s_maxsymlinklen) {
/* slow symlink */
inode->i_op = &page_symlink_inode_operations;
inode_nohighmem(inode);
inode->i_mapping->a_ops = &ufs_aops;
err = page_symlink(inode, symname, l);
if (err)
goto out_fail;
} else {
/* fast symlink */
inode->i_op = &simple_symlink_inode_operations;
inode->i_link = (char *)UFS_I(inode)->i_u1.i_symlink;
memcpy(inode->i_link, symname, l);
inode->i_size = l-1;
}
mark_inode_dirty(inode);
return ufs_add_nondir(dentry, inode);
out_fail:
inode_dec_link_count(inode);
unlock_new_inode(inode);
iput(inode);
return err;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| linus torvalds | linus torvalds | 99 | 44.39% | 2 | 15.38% |
| pre-git | pre-git | 81 | 36.32% | 2 | 15.38% |
| al viro | al viro | 37 | 16.59% | 5 | 38.46% |
| dave jones | dave jones | 3 | 1.35% | 1 | 7.69% |
| andrew morton | andrew morton | 1 | 0.45% | 1 | 7.69% |
| alexey dobriyan | alexey dobriyan | 1 | 0.45% | 1 | 7.69% |
| duane griffin | duane griffin | 1 | 0.45% | 1 | 7.69% |
| Total | 223 | 100.00% | 13 | 100.00% |
static int ufs_link (struct dentry * old_dentry, struct inode * dir,
struct dentry *dentry)
{
struct inode *inode = d_inode(old_dentry);
int error;
inode->i_ctime = CURRENT_TIME_SEC;
inode_inc_link_count(inode);
ihold(inode);
error = ufs_add_link(dentry, inode);
if (error) {
inode_dec_link_count(inode);
iput(inode);
} else
d_instantiate(dentry, inode);
return error;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| linus torvalds | linus torvalds | 39 | 45.35% | 1 | 11.11% |
| jan kara | jan kara | 18 | 20.93% | 1 | 11.11% |
| pre-git | pre-git | 12 | 13.95% | 1 | 11.11% |
| al viro | al viro | 10 | 11.63% | 2 | 22.22% |
| david howells | david howells | 3 | 3.49% | 1 | 11.11% |
| arnd bergmann | arnd bergmann | 2 | 2.33% | 1 | 11.11% |
| andi kleen | andi kleen | 1 | 1.16% | 1 | 11.11% |
| alexey dobriyan | alexey dobriyan | 1 | 1.16% | 1 | 11.11% |
| Total | 86 | 100.00% | 9 | 100.00% |
static int ufs_mkdir(struct inode * dir, struct dentry * dentry, umode_t mode)
{
struct inode * inode;
int err;
inode_inc_link_count(dir);
inode = ufs_new_inode(dir, S_IFDIR|mode);
err = PTR_ERR(inode);
if (IS_ERR(inode))
goto out_dir;
inode->i_op = &ufs_dir_inode_operations;
inode->i_fop = &ufs_dir_operations;
inode->i_mapping->a_ops = &ufs_aops;
inode_inc_link_count(inode);
err = ufs_make_empty(inode, dir);
if (err)
goto out_fail;
err = ufs_add_link(dentry, inode);
if (err)
goto out_fail;
unlock_new_inode(inode);
d_instantiate(dentry, inode);
return 0;
out_fail:
inode_dec_link_count(inode);
inode_dec_link_count(inode);
unlock_new_inode(inode);
iput (inode);
out_dir:
inode_dec_link_count(dir);
return err;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| pre-git | pre-git | 87 | 52.10% | 4 | 28.57% |
| linus torvalds | linus torvalds | 35 | 20.96% | 1 | 7.14% |
| fabian frederick | fabian frederick | 17 | 10.18% | 1 | 7.14% |
| al viro | al viro | 11 | 6.59% | 4 | 28.57% |
| evgeniy dushistov | evgeniy dushistov | 9 | 5.39% | 1 | 7.14% |
| alexey dobriyan | alexey dobriyan | 4 | 2.40% | 1 | 7.14% |
| arnd bergmann | arnd bergmann | 2 | 1.20% | 1 | 7.14% |
| jan kara | jan kara | 2 | 1.20% | 1 | 7.14% |
| Total | 167 | 100.00% | 14 | 100.00% |
static int ufs_unlink(struct inode *dir, struct dentry *dentry)
{
struct inode * inode = d_inode(dentry);
struct ufs_dir_entry *de;
struct page *page;
int err = -ENOENT;
de = ufs_find_entry(dir, &dentry->d_name, &page);
if (!de)
goto out;
err = ufs_delete_entry(dir, de, page);
if (err)
goto out;
inode->i_ctime = dir->i_ctime;
inode_dec_link_count(inode);
err = 0;
out:
return err;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| linus torvalds | linus torvalds | 49 | 46.67% | 1 | 11.11% |
| pre-git | pre-git | 41 | 39.05% | 4 | 44.44% |
| evgeniy dushistov | evgeniy dushistov | 8 | 7.62% | 1 | 11.11% |
| alexey dobriyan | alexey dobriyan | 4 | 3.81% | 2 | 22.22% |
| david howells | david howells | 3 | 2.86% | 1 | 11.11% |
| Total | 105 | 100.00% | 9 | 100.00% |
static int ufs_rmdir (struct inode * dir, struct dentry *dentry)
{
struct inode * inode = d_inode(dentry);
int err= -ENOTEMPTY;
if (ufs_empty_dir (inode)) {
err = ufs_unlink(dir, dentry);
if (!err) {
inode->i_size = 0;
inode_dec_link_count(inode);
inode_dec_link_count(dir);
}
}
return err;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| linus torvalds | linus torvalds | 41 | 53.95% | 1 | 16.67% |
| pre-git | pre-git | 30 | 39.47% | 3 | 50.00% |
| david howells | david howells | 3 | 3.95% | 1 | 16.67% |
| alexey dobriyan | alexey dobriyan | 2 | 2.63% | 1 | 16.67% |
| Total | 76 | 100.00% | 6 | 100.00% |
static int ufs_rename(struct inode *old_dir, struct dentry *old_dentry,
struct inode *new_dir, struct dentry *new_dentry)
{
struct inode *old_inode = d_inode(old_dentry);
struct inode *new_inode = d_inode(new_dentry);
struct page *dir_page = NULL;
struct ufs_dir_entry * dir_de = NULL;
struct page *old_page;
struct ufs_dir_entry *old_de;
int err = -ENOENT;
old_de = ufs_find_entry(old_dir, &old_dentry->d_name, &old_page);
if (!old_de)
goto out;
if (S_ISDIR(old_inode->i_mode)) {
err = -EIO;
dir_de = ufs_dotdot(old_inode, &dir_page);
if (!dir_de)
goto out_old;
}
if (new_inode) {
struct page *new_page;
struct ufs_dir_entry *new_de;
err = -ENOTEMPTY;
if (dir_de && !ufs_empty_dir(new_inode))
goto out_dir;
err = -ENOENT;
new_de = ufs_find_entry(new_dir, &new_dentry->d_name, &new_page);
if (!new_de)
goto out_dir;
ufs_set_link(new_dir, new_de, new_page, old_inode, 1);
new_inode->i_ctime = CURRENT_TIME_SEC;
if (dir_de)
drop_nlink(new_inode);
inode_dec_link_count(new_inode);
} else {
err = ufs_add_link(new_dentry, old_inode);
if (err)
goto out_dir;
if (dir_de)
inode_inc_link_count(new_dir);
}
/*
* Like most other Unix systems, set the ctime for inodes on a
* rename.
*/
old_inode->i_ctime = CURRENT_TIME_SEC;
ufs_delete_entry(old_dir, old_de, old_page);
mark_inode_dirty(old_inode);
if (dir_de) {
if (old_dir != new_dir)
ufs_set_link(old_inode, dir_de, dir_page, new_dir, 0);
else {
kunmap(dir_page);
put_page(dir_page);
}
inode_dec_link_count(old_dir);
}
return 0;
out_dir:
if (dir_de) {
kunmap(dir_page);
put_page(dir_page);
}
out_old:
kunmap(old_page);
put_page(old_page);
out:
return err;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| pre-git | pre-git | 174 | 48.60% | 4 | 28.57% |
| linus torvalds | linus torvalds | 102 | 28.49% | 1 | 7.14% |
| evgeniy dushistov | evgeniy dushistov | 36 | 10.06% | 1 | 7.14% |
| al viro | al viro | 24 | 6.70% | 2 | 14.29% |
| alexey dobriyan | alexey dobriyan | 9 | 2.51% | 2 | 14.29% |
| david howells | david howells | 6 | 1.68% | 1 | 7.14% |
| kirill a. shutemov | kirill a. shutemov | 3 | 0.84% | 1 | 7.14% |
| dave hansen | dave hansen | 3 | 0.84% | 1 | 7.14% |
| andi kleen | andi kleen | 1 | 0.28% | 1 | 7.14% |
| Total | 358 | 100.00% | 14 | 100.00% |
const struct inode_operations ufs_dir_inode_operations = {
.create = ufs_create,
.lookup = ufs_lookup,
.link = ufs_link,
.unlink = ufs_unlink,
.symlink = ufs_symlink,
.mkdir = ufs_mkdir,
.rmdir = ufs_rmdir,
.mknod = ufs_mknod,
.rename = ufs_rename,
};
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| pre-git | pre-git | 589 | 41.25% | 8 | 14.29% |
| linus torvalds | linus torvalds | 511 | 35.78% | 2 | 3.57% |
| al viro | al viro | 135 | 9.45% | 18 | 32.14% |
| evgeniy dushistov | evgeniy dushistov | 58 | 4.06% | 3 | 5.36% |
| alexey dobriyan | alexey dobriyan | 25 | 1.75% | 2 | 3.57% |
| jan kara | jan kara | 20 | 1.40% | 2 | 3.57% |
| art haas | art haas | 18 | 1.26% | 1 | 1.79% |
| fabian frederick | fabian frederick | 17 | 1.19% | 1 | 1.79% |
| david howells | david howells | 16 | 1.12% | 2 | 3.57% |
| alex kiernan | alex kiernan | 8 | 0.56% | 1 | 1.79% |
| andries brouwer | andries brouwer | 6 | 0.42% | 2 | 3.57% |
| arnd bergmann | arnd bergmann | 4 | 0.28% | 1 | 1.79% |
| dave jones | dave jones | 4 | 0.28% | 2 | 3.57% |
| christoph hellwig | christoph hellwig | 3 | 0.21% | 2 | 3.57% |
| kirill a. shutemov | kirill a. shutemov | 3 | 0.21% | 1 | 1.79% |
| dave hansen | dave hansen | 3 | 0.21% | 1 | 1.79% |
| andi kleen | andi kleen | 2 | 0.14% | 1 | 1.79% |
| trond myklebust | trond myklebust | 2 | 0.14% | 2 | 3.57% |
| andrew morton | andrew morton | 1 | 0.07% | 1 | 1.79% |
| arjan van de ven | arjan van de ven | 1 | 0.07% | 1 | 1.79% |
| duane griffin | duane griffin | 1 | 0.07% | 1 | 1.79% |
| mike frysinger | mike frysinger | 1 | 0.07% | 1 | 1.79% |
| Total | 1428 | 100.00% | 56 | 100.00% |
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