11-19-2008
If other users can access the file, you cannot stop them from updating the timestamp on the file. If you open the file, then read or write the file you can get the file's mtime from a stat call, then when you are done with the file, you can reset filetimes with a utime call, using the data you got from stat.
All this sounds bogus to me. What are you trying to accomplish? not how to do what you are attempting to do that looks odd. It may be what you have to do, but I kind of doubt it.
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LEARN ABOUT OPENSOLARIS
stat.h
stat.h(3HEAD) Headers stat.h(3HEAD)
NAME
stat.h, stat - data returned by stat system call
SYNOPSIS
#include <sys/types.h>
#include <sys/stat.h>
DESCRIPTION
The system calls stat, lstat and fstat return data in a stat structure, which is defined in <stat.h>.
The constants used in the st_mode field are also defined in this file:
#define S_IFMT /* type of file */
#define S_IAMB /* access mode bits */
#define S_IFIFO /* fifo */
#define S_IFCHR /* character special */
#define S_IFDIR /* directory */
#define S_IFNAM /* XENIX special named file */
#define S_INSEM /* XENIX semaphore subtype of IFNAM */
#define S_INSHD /* XENIX shared data subtype of IFNAM */
#define S_IFBLK /* block special */
#define S_IFREG /* regular */
#define S_IFLNK /* symbolic link */
#define S_IFSOCK /* socket */
#define S_IFDOOR /* door */
#define S_ISUID /* set user id on execution */
#define S_ISGID /* set group id on execution */
#define S_ISVTX /* save swapped text even after use */
#define S_IREAD /* read permission, owner */
#define S_IWRITE /* write permission, owner */
#define S_IEXEC /* execute/search permission, owner */
#define S_ENFMT /* record locking enforcement flag */
#define S_IRWXU /* read, write, execute: owner */
#define S_IRUSR /* read permission: owner */
#define S_IWUSR /* write permission: owner */
#define S_IXUSR /* execute permission: owner */
#define S_IRWXG /* read, write, execute: group */
#define S_IRGRP /* read permission: group */
#define S_IWGRP /* write permission: group */
#define S_IXGRP /* execute permission: group */
#define S_IRWXO /* read, write, execute: other */
#define S_IROTH /* read permission: other */
#define S_IWOTH /* write permission: other */
#define S_IXOTH /* execute permission: other */
The following macros are for POSIX conformance (see standards(5)):
#define S_ISBLK(mode) block special file
#define S_ISCHR(mode) character special file
#define S_ISDIR(mode) directory file
#define S_ISFIFO(mode) pipe or fifo file
#define S_ISREG(mode) regular file
#define S_ISSOCK(mode) socket file
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Interface Stability |Standard |
+-----------------------------+-----------------------------+
SEE ALSO
stat(2), types.h(3HEAD), attributes(5), standards(5)
SunOS 5.11 30 Aug 2002 stat.h(3HEAD)