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Bring stat(2) into line with what is now actually in

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stat.h.  Also add a little blurb regarding st_mtime &
friends clarifiying how they are defined in a
non-_POSIX_SOURCE envorinment.  Closes PR# 1089.
This commit is contained in:
Mike Pritchard 1997-01-11 21:45:57 +00:00
parent f3396fdc63
commit 9e5fade061
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=21555
1 changed files with 34 additions and 13 deletions
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47
lib/libc/sys/stat.2
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@ -30,7 +30,7 @@
.\" SUCH DAMAGE.
.\"
.\" @(#)stat.2 8.3 (Berkeley) 4/19/94
.\" $Id: stat.2,v 1.6 1996/09/23 22:22:46 wosch Exp $
.\" $Id: stat.2,v 1.7 1996/12/02 20:03:55 wosch Exp $
.\"
.Dd April 19, 1994
.Dt STAT 2
@ -94,21 +94,30 @@ as defined by
and into which information is placed concerning the file.
.Bd -literal
struct stat {
dev_t st_dev; /* device inode resides on */
ino_t st_ino; /* inode's number */
mode_t st_mode; /* inode protection mode */
nlink_t st_nlink; /* number or hard links to the file */
uid_t st_uid; /* user-id of owner */
gid_t st_gid; /* group-id of owner */
dev_t st_rdev; /* device type, for special file inode */
dev_t st_dev; /* inode's device */
ino_t st_ino; /* inode's number */
mode_t st_mode; /* inode protection mode */
nlink_t st_nlink; /* number of hard links */
uid_t st_uid; /* user ID of the file's owner */
gid_t st_gid; /* group ID of the file's group */
dev_t st_rdev; /* device type */
#ifndef _POSIX_SOURCE
struct timespec st_atimespec; /* time of last access */
struct timespec st_mtimespec; /* time of last data modification */
struct timespec st_ctimespec; /* time of last file status change */
off_t st_size; /* file size, in bytes */
quad_t st_blocks; /* blocks allocated for file */
u_long st_blksize;/* optimal file sys I/O ops blocksize */
u_long st_flags; /* user defined flags for file */
u_long st_gen; /* file generation number */
#else
time_t st_atime; /* time of last access */
long st_atimensec; /* nsec of last access */
time_t st_mtime; /* time of last data modification */
long st_mtimensec; /* nsec of last data modification */
time_t st_ctime; /* time of last file status change */
long st_ctimensec; /* nsec of last file status change */
#endif
off_t st_size; /* file size, in bytes */
quad_t st_blocks; /* blocks allocated for file */
u_long st_blksize; /* optimal blocksize for I/O */
u_long st_flags; /* user defined flags for file */
u_long st_gen; /* file generation number */
};
.Ed
.Pp
@ -147,6 +156,17 @@ and
system calls.
.El
.Pp
If
.Dv _POSIX_SOURCE
is not defined, the time-related fields are defined as:
.Bd -literal
#ifndef _POSIX_SOURCE
#define st_atime st_atimespec.tv_sec
#define st_mtime st_mtimespec.tv_sec
#define st_ctime st_ctimespec.tv_sec
#endif
.Ed
.Pp
The size-related fields of the
.Fa struct stat
are as follows:
@ -171,6 +191,7 @@ has the following bits:
#define S_IFREG 0100000 /* regular */
#define S_IFLNK 0120000 /* symbolic link */
#define S_IFSOCK 0140000 /* socket */
#define S_IFWHT 0160000 /* whiteout */
#define S_ISUID 0004000 /* set user id on execution */
#define S_ISGID 0002000 /* set group id on execution */
#define S_ISVTX 0001000 /* save swapped text even after use */