STAT(II) 8/5/73 STAT(II) NAME stat - get file status SYNOPSIS (stat = 18.) sys stat; name; buf stat(name, buf) char *name; struct inode *buf; DESCRIPTION Name points to a null-terminated string naming a file; buf is the address of a 36(10) byte buffer into which informa- tion 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 stat, buf 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) - 1 - STAT(II) 8/5/73 STAT(II) SEE ALSO ls(I), fstat(II), fs(V) DIAGNOSTICS Error bit (c-bit) is set if the file cannot be found. From C, a -1 return indicates an error. - 2 -