GNU/Linux man pages
Livre :
Expressions régulières,
Syntaxe et mise en oeuvre :
Unix |
Unix v6 |
|
 |
stat(2) |
 |
stat get file status (stat = 18.)
sys stat; name; buf stat(name, buf)
char *name;
struct inode *buf; points to a null-terminated string
naming a file; is the address of a 36(10) byte buffer into
which information is placed concerning the file. It is
unnecessary to have any permissions at all with respect to
the file, but all directories leading to the file must be
readable. After has the following structure (starting offset
given in bytes):
struct inode {
|
char |
minor; |
/* +0: minor device of i-node */ | |
|
char |
major; |
/* +1: major device */ | |
|
int |
inumber; |
/* +2 */ | |
|
int |
flags; |
/* +4: see below */ | |
|
char |
nlinks; |
/* +6: number of links to file */ | |
|
char |
uid; |
/* +7: user ID of owner */ | |
|
char |
gid; |
/* +8: group ID of owner */ | |
|
char |
size0; |
/* +9: high byte of 24-bit size */ | |
|
int |
size1; |
/* +10: low word of 24-bit size */ | |
|
int |
addr[8]; |
/* +12: block numbers or device number */ | |
|
int |
actime[2]; |
/* +28: time of last access */ | |
|
int |
modtime[2]; |
/* +32: time of last modification */ |
};
The flags are as follows: 100000 i-node is allocated 060000
2-bit file type: 000000 plain file 040000 directory 020000
character-type special file 060000 block-type special file.
010000 large file 004000 set user-ID on execution 002000 set
group-ID on execution 001000 save text image after execution
000400 read (owner) 000200 write (owner) 000100 execute
(owner) 000070 read, write, execute (group) 000007 read,
write, execute (others) ls (I), fstat (II), fs (V) Error bit
(c-bit) is set if the file cannot be found. From C, a 1
return indicates an error.
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stat(2) | |