blob: ecb275782c03ef63694d66468d25d389564bb500 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001#include <linux/kernel.h>
NeilBrownbff61972009-03-31 14:33:13 +11002#include <linux/blkdev.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -07003#include <linux/init.h>
4#include <linux/syscalls.h>
5#include <linux/unistd.h>
6#include <linux/slab.h>
7#include <linux/mount.h>
8#include <linux/major.h>
9#include <linux/root_dev.h>
10
Linus Torvalds1da177e2005-04-16 15:20:36 -070011void change_floppy(char *fmt, ...);
12void mount_block_root(char *name, int flags);
13void mount_root(void);
14extern int root_mountflags;
Linus Torvalds1da177e2005-04-16 15:20:36 -070015
Greg Kroah-Hartmanbdaf8522005-06-20 21:15:16 -070016static inline int create_dev(char *name, dev_t dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -070017{
18 sys_unlink(name);
19 return sys_mknod(name, S_IFBLK|0600, new_encode_dev(dev));
20}
21
Linus Torvalds1da177e2005-04-16 15:20:36 -070022#if BITS_PER_LONG == 32
23static inline u32 bstat(char *name)
24{
25 struct stat64 stat;
26 if (sys_stat64(name, &stat) != 0)
27 return 0;
28 if (!S_ISBLK(stat.st_mode))
29 return 0;
30 if (stat.st_rdev != (u32)stat.st_rdev)
31 return 0;
32 return stat.st_rdev;
33}
34#else
35static inline u32 bstat(char *name)
36{
37 struct stat stat;
38 if (sys_newstat(name, &stat) != 0)
39 return 0;
40 if (!S_ISBLK(stat.st_mode))
41 return 0;
42 return stat.st_rdev;
43}
44#endif
45
46#ifdef CONFIG_BLK_DEV_RAM
47
48int __init rd_load_disk(int n);
49int __init rd_load_image(char *from);
50
51#else
52
53static inline int rd_load_disk(int n) { return 0; }
54static inline int rd_load_image(char *from) { return 0; }
55
56#endif
57
58#ifdef CONFIG_BLK_DEV_INITRD
59
Yaowei Baif057f3b2016-01-20 14:59:29 -080060bool __init initrd_load(void);
Linus Torvalds1da177e2005-04-16 15:20:36 -070061
62#else
63
Yaowei Baif057f3b2016-01-20 14:59:29 -080064static inline bool initrd_load(void) { return false; }
Linus Torvalds1da177e2005-04-16 15:20:36 -070065
66#endif
67
68#ifdef CONFIG_BLK_DEV_MD
69
70void md_run_setup(void);
71
72#else
73
74static inline void md_run_setup(void) {}
75
76#endif
Will Drewry077d23c2010-06-09 17:47:38 -050077
78#ifdef CONFIG_BLK_DEV_DM
79
80void dm_run_setup(void);
81
82#else
83
84static inline void dm_run_setup(void) {}
85
86#endif