Contributors: 19
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Al Viro |
250 |
44.64% |
18 |
42.86% |
| Christoph Hellwig |
115 |
20.54% |
2 |
4.76% |
| Duane Griffin |
35 |
6.25% |
1 |
2.38% |
| Jeff Layton |
32 |
5.71% |
2 |
4.76% |
| David Howells |
27 |
4.82% |
3 |
7.14% |
| Harvey Harrison |
22 |
3.93% |
1 |
2.38% |
| Neil Brown |
17 |
3.04% |
1 |
2.38% |
| Andy Whitcroft |
15 |
2.68% |
1 |
2.38% |
| Trond Myklebust |
11 |
1.96% |
3 |
7.14% |
| Eric W. Biedermann |
10 |
1.79% |
1 |
2.38% |
| Nicholas Piggin |
8 |
1.43% |
1 |
2.38% |
| OGAWA Hirofumi |
4 |
0.71% |
1 |
2.38% |
| Linus Torvalds |
4 |
0.71% |
1 |
2.38% |
| Alexey Dobriyan |
2 |
0.36% |
1 |
2.38% |
| Jan Blunck |
2 |
0.36% |
1 |
2.38% |
| David S. Miller |
2 |
0.36% |
1 |
2.38% |
| Stephen Warren |
2 |
0.36% |
1 |
2.38% |
| Greg Kroah-Hartman |
1 |
0.18% |
1 |
2.38% |
| Josef 'Jeff' Sipek |
1 |
0.18% |
1 |
2.38% |
| Total |
560 |
|
42 |
|
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _LINUX_NAMEI_H
#define _LINUX_NAMEI_H
#include <linux/kernel.h>
#include <linux/path.h>
#include <linux/fcntl.h>
#include <linux/errno.h>
enum { MAX_NESTED_LINKS = 8 };
#define MAXSYMLINKS 40
/*
* Type of the last component on LOOKUP_PARENT
*/
enum {LAST_NORM, LAST_ROOT, LAST_DOT, LAST_DOTDOT, LAST_BIND};
/*
* The bitmask for a lookup event:
* - follow links at the end
* - require a directory
* - ending slashes ok even for nonexistent files
* - internal "there are more path components" flag
* - dentry cache is untrusted; force a real lookup
* - suppress terminal automount
*/
#define LOOKUP_FOLLOW 0x0001
#define LOOKUP_DIRECTORY 0x0002
#define LOOKUP_AUTOMOUNT 0x0004
#define LOOKUP_PARENT 0x0010
#define LOOKUP_REVAL 0x0020
#define LOOKUP_RCU 0x0040
#define LOOKUP_NO_REVAL 0x0080
/*
* Intent data
*/
#define LOOKUP_OPEN 0x0100
#define LOOKUP_CREATE 0x0200
#define LOOKUP_EXCL 0x0400
#define LOOKUP_RENAME_TARGET 0x0800
#define LOOKUP_JUMPED 0x1000
#define LOOKUP_ROOT 0x2000
#define LOOKUP_EMPTY 0x4000
#define LOOKUP_DOWN 0x8000
extern int path_pts(struct path *path);
extern int user_path_at_empty(int, const char __user *, unsigned, struct path *, int *empty);
static inline int user_path_at(int dfd, const char __user *name, unsigned flags,
struct path *path)
{
return user_path_at_empty(dfd, name, flags, path, NULL);
}
static inline int user_path(const char __user *name, struct path *path)
{
return user_path_at_empty(AT_FDCWD, name, LOOKUP_FOLLOW, path, NULL);
}
static inline int user_lpath(const char __user *name, struct path *path)
{
return user_path_at_empty(AT_FDCWD, name, 0, path, NULL);
}
static inline int user_path_dir(const char __user *name, struct path *path)
{
return user_path_at_empty(AT_FDCWD, name,
LOOKUP_FOLLOW | LOOKUP_DIRECTORY, path, NULL);
}
extern int kern_path(const char *, unsigned, struct path *);
extern struct dentry *kern_path_create(int, const char *, struct path *, unsigned int);
extern struct dentry *user_path_create(int, const char __user *, struct path *, unsigned int);
extern void done_path_create(struct path *, struct dentry *);
extern struct dentry *kern_path_locked(const char *, struct path *);
extern int kern_path_mountpoint(int, const char *, struct path *, unsigned int);
extern struct dentry *try_lookup_one_len(const char *, struct dentry *, int);
extern struct dentry *lookup_one_len(const char *, struct dentry *, int);
extern struct dentry *lookup_one_len_unlocked(const char *, struct dentry *, int);
extern int follow_down_one(struct path *);
extern int follow_down(struct path *);
extern int follow_up(struct path *);
extern struct dentry *lock_rename(struct dentry *, struct dentry *);
extern void unlock_rename(struct dentry *, struct dentry *);
extern void nd_jump_link(struct path *path);
static inline void nd_terminate_link(void *name, size_t len, size_t maxlen)
{
((char *) name)[min(len, maxlen)] = '\0';
}
/**
* retry_estale - determine whether the caller should retry an operation
* @error: the error that would currently be returned
* @flags: flags being used for next lookup attempt
*
* Check to see if the error code was -ESTALE, and then determine whether
* to retry the call based on whether "flags" already has LOOKUP_REVAL set.
*
* Returns true if the caller should try the operation again.
*/
static inline bool
retry_estale(const long error, const unsigned int flags)
{
return error == -ESTALE && !(flags & LOOKUP_REVAL);
}
#endif /* _LINUX_NAMEI_H */