The _stat structure, defined in SYS\STAT.H, includes the following fields. st_gid Numeric identifier of group that owns file (UNIX-specific) This field will always be zero on NT systems. A redirected file is classified as an NT file. st_atime Time of last access of file. st_ctime Time of creation of file. st_dev Drive number of the disk containing the file (same as st_rdev). st_ino Number of the information node (the inode) for the file (UNIX-specific). On UNIX file systems, the inode describes the file date and time stamps, permissions, and content. When files are hard-linked to one another, they share the same inode. The inode, and therefore st_ino, has no meaning in the FAT, HPFS, or NTFS file systems. st_mode Bit mask for file-mode information. The _S_IFDIR bit is set if path specifies a directory; the _S_IFREG bit is set if path specifies an ordinary file or a device. User read/write bits are set according to the file’s permission mode; user execute bits are set according to the filename extension. st_mtime Time of last modification of file. st_nlink Always 1 on non-NTFS file systems. st_rdev Drive number of the disk containing the file (same as st_dev). st_size Size of the file in bytes; a 64-bit integer for _stati64 and _wstati64 st_uid Numeric identifier of user who owns file (UNIX-specific). This field will always be zero on NT systems. A redirected file is classified as an NT file. If path refers to a device, the size, time, _dev, and _rdev fields in the _stat structure are meaningless. Because STAT.H uses the _dev_t type that is defined in TYPES.H, you must include TYPES.H before STAT.H in your code. Example /* STAT.C: This program uses the _stat function to
* report information about the file named STAT.C.
*/
#include <time.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <stdio.h>
void main( void )
{
struct _stat buf;
int result;
char buffer[] = "A line to output";
/* Get data associated with "stat.c": */
result = _stat( "stat.c", &buf );
/* Check if statistics are valid: */
if( result != 0 )
perror( "Problem getting information" );
else
{
/* Output some of the statistics: */
printf( "File size : %ld\n", buf.st_size );
printf( "Drive : %c:\n", buf.st_dev + 'A' );
printf( "Time modified : %s", ctime( &buf.st_atime ) );
}
}
Output File size : 745
Drive : C:
Time modified : Tue May 03 00:00:00 1994
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