projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| 88d0a458 KT |
1 | .th STAT II 8/5/73 |
| 2 | .sh NAME | |
| 3 | stat \*- get file status | |
| 4 | .sh SYNOPSIS | |
| 5 | (stat = 18.) | |
| 6 | .br | |
| 7 | .ft B | |
| 8 | sys stat; name; buf | |
| 9 | .s3 | |
| 10 | stat(name, buf) | |
| 11 | .br | |
| 12 | char *name; | |
| 13 | .br | |
| 14 | struct inode *buf; | |
| 15 | .ft R | |
| 16 | .sh DESCRIPTION | |
| 17 | .it Name | |
| 18 | points to a null-terminated string naming | |
| 19 | a file; | |
| 20 | .it buf | |
| 21 | is the address of a 36(10) byte buffer | |
| 22 | into which information is placed concerning the file. | |
| 23 | It is unnecessary to have any | |
| 24 | permissions at all with respect to the file, but all directories | |
| 25 | leading to the file must be readable. | |
| 26 | After | |
| 27 | .it stat, | |
| 28 | .it buf | |
| 29 | has the following structure (starting offset given in bytes): | |
| 30 | .s3 | |
| 31 | .if t .ta .5 1i 2.5i | |
| 32 | .if n .ta 3 9 24 | |
| 33 | .nf | |
| 34 | struct { | |
| 35 | char minor; /* +0: minor device of i-node */ | |
| 36 | char major; /* +1: major device */ | |
| 37 | int inumber /* +2 */ | |
| 38 | int flags; /* +4: see below */ | |
| 39 | char nlinks; /* +6: number of links to file */ | |
| 40 | char uid; /* +7: user ID of owner */ | |
| 41 | char gid; /* +8: group ID of owner */ | |
| 42 | char size0; /* +9: high byte of 24-bit size */ | |
| 43 | int size1; /* +10: low word of 24-bit size */ | |
| 44 | int addr[8]; /* +12: block numbers or device number */ | |
| 45 | int actime[2]; /* +28: time of last access */ | |
| 46 | int modtime[2]; /* +32: time of last modification */ | |
| 47 | }; | |
| 48 | .fi | |
| 49 | .s3 | |
| 50 | The flags are as follows: | |
| 51 | .s3 | |
| 52 | .lp +10 9 | |
| 53 | 100000 i-node is allocated | |
| 54 | .lp +10 9 | |
| 55 | 060000 2-bit file type: | |
| 56 | .lp +15 9 | |
| 57 | 000000 plain file | |
| 58 | .lp +15 9 | |
| 59 | 040000 directory | |
| 60 | .lp +15 9 | |
| 61 | 020000 character-type special file | |
| 62 | .lp +15 9 | |
| 63 | 060000 block-type special file. | |
| 64 | .lp +10 9 | |
| 65 | 010000 large file | |
| 66 | .lp +10 9 | |
| 67 | 004000 set user-ID on execution | |
| 68 | .lp +10 9 | |
| 69 | 002000 set group-ID on execution | |
| 70 | .lp +10 9 | |
| 71 | 000400 read (owner) | |
| 72 | .lp +10 9 | |
| 73 | 000200 write (owner) | |
| 74 | .lp +10 9 | |
| 75 | 000100 execute (owner) | |
| 76 | .lp +10 9 | |
| 77 | 000070 read, write, execute (group) | |
| 78 | .lp +10 9 | |
| 79 | 000007 read, write, execute (others) | |
| 80 | .i0 | |
| 81 | .sh "SEE ALSO" | |
| 82 | stat(I), fstat(II), fs(V) | |
| 83 | .sh DIAGNOSTICS | |
| 84 | Error bit (c-bit) | |
| 85 | is set if the file cannot be found. | |
| 86 | From C, a \*-1 return indicates an error. |