wujun@wj-vBox:~/freescale/linux-imx/include$ vi ./uapi/asm-generic/stat.h
1 #ifndef __ASM_GENERIC_STAT_H2 #define __ASM_GENERIC_STAT_H
3
4 /*
5 * Everybody gets this wrong and has to stick with it for all
6 * eternity. Hopefully, this version gets used by new architectures
7 * so they don't fall into the same traps.
8 *
9 * stat64 is copied from powerpc64, with explicit padding added.
10 * stat is the same structure layout on 64-bit, without the 'long long'
11 * types.
12 *
13 * By convention, 64 bit architectures use the stat interface, while
14 * 32 bit architectures use the stat64 interface. Note that we don't
15 * provide an __old_kernel_stat here, which new architecture should
16 * not have to start with.
17 */
18
19 #include <asm/bitsperlong.h>
20
21 #define STAT_HAVE_NSEC 1
22
23 struct stat {
24 unsigned long st_dev; /* Device. */
25 unsigned long st_ino; /* File serial number. */
26 unsigned int st_mode; /* File mode. 文件的类型和存取的权限 */
27 unsigned int st_nlink; /* Link count. */
28 unsigned int st_uid; /* User ID of the file's owner. */
29 unsigned int st_gid; /* Group ID of the file's group. */
30 unsigned long st_rdev; /* Device number, if device. */
31 unsigned long __pad1;
32 long st_size; /* Size of file, in bytes. 文件大小，以字节计算*/
33 int st_blksize; /* Optimal block size for I/O. */
34 int __pad2;
35 long st_blocks; /* Number 512-byte blocks allocated. */
36 long st_atime; /* Time of last access. */
37 unsigned long st_atime_nsec;
38 long st_mtime; /* Time of last modification. */
39 unsigned long st_mtime_nsec;
40 long st_ctime; /* Time of last status change. */
41 unsigned long st_ctime_nsec;
42 unsigned int __unused4;
43 unsigned int __unused5;
44 };
45
46 /* This matches struct stat64 in glibc2.1. Only used for 32 bit. */
47 #if __BITS_PER_LONG != 64 || defined(__ARCH_WANT_STAT64)
48 struct stat64 {
49 unsigned long long st_dev; /* Device. */
50 unsigned long long st_ino; /* File serial number. */
51 unsigned int st_mode; /* File mode. */
52 unsigned int st_nlink; /* Link count. */
53 unsigned int st_uid; /* User ID of the file's owner. */
54 unsigned int st_gid; /* Group ID of the file's group. */
55 unsigned long long st_rdev; /* Device number, if device. */
56 unsigned long long __pad1;
57 long long st_size; /* Size of file, in bytes. */
58 int st_blksize; /* Optimal block size for I/O. */
59 int __pad2;
60 long long st_blocks; /* Number 512-byte blocks allocated. */
61 int st_atime; /* Time of last access. */
62 unsigned int st_atime_nsec;
63 int st_mtime; /* Time of last modification. */
64 unsigned int st_mtime_nsec;
65 int st_ctime; /* Time of last status change. */
66 unsigned int st_ctime_nsec;
67 unsigned int __unused4;
68 unsigned int __unused5;
69 };
70 #endif
71
72 #endif /* __ASM_GENERIC_STAT_H */
wujun@wj-vBox:~/freescale/linux-imx/include$ vi ./uapi/linux/stat.h
1 #ifndef _UAPI_LINUX_STAT_H
2 #define _UAPI_LINUX_STAT_H
3
4
5 #if defined(__KERNEL__) || !defined(__GLIBC__) || (__GLIBC__ < 2)
6
7 #define S_IFMT 00170000
8 #define S_IFSOCK 0140000
9 #define S_IFLNK 0120000
10 #define S_IFREG 0100000
11 #define S_IFBLK 0060000
12 #define S_IFDIR 0040000
13 #define S_IFCHR 0020000
14 #define S_IFIFO 0010000
15 #define S_ISUID 0004000
16 #define S_ISGID 0002000
17 #define S_ISVTX 0001000
18
19 #define S_ISLNK(m) (((m) & S_IFMT) == S_IFLNK)
20 #define S_ISREG(m) (((m) & S_IFMT) == S_IFREG)
21 #define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
22 #define S_ISCHR(m) (((m) & S_IFMT) == S_IFCHR)
23 #define S_ISBLK(m) (((m) & S_IFMT) == S_IFBLK)
24 #define S_ISFIFO(m) (((m) & S_IFMT) == S_IFIFO)
25 #define S_ISSOCK(m) (((m) & S_IFMT) == S_IFSOCK)
26
27 #define S_IRWXU 00700
28 #define S_IRUSR 00400
29 #define S_IWUSR 00200
30 #define S_IXUSR 00100
31
32 #define S_IRWXG 00070
33 #define S_IRGRP 00040
34 #define S_IWGRP 00020
35 #define S_IXGRP 00010
36
37 #define S_IRWXO 00007
38 #define S_IROTH 00004
39 #define S_IWOTH 00002
40 #define S_IXOTH 00001
41
42 #endif
43
44
45 #endif /* _UAPI_LINUX_STAT_H */