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The sb argument is a pointer to a stat structure as defined by

#include <sys/stat.h>and into which information is placed concerning the file. The fields of struct stat related to the file system are as follows: st_dev The numeric ID of the device containing the file. st_ino The file’s inode number. st_nlink   The number of hard links to the file. The st_dev and st_ino fields together identify the file uniquely within the system. The time-related fields of struct stat are as follows: st_atime Time when file data last accessed. Changed by the .Xr utimes 2, read and readv system calls. st_mtime Time when file data last modified. st_ctime Time when file status was last changed (inode data modification). st_birthtime   Time when the inode was created. If _POSIX_SOURCE is not defined, the time-related fields are defined as: #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 The size-related fields of the struct stat are as follows: st_size The file size in bytes. st_blksize   The optimal I/O block size for the file. st_blocks The actual number of blocks allocated for the file in 512-byte units. As short symbolic links are stored in the inode, this number may be zero. The access-related fields of struct stat are as follows: st_uid The user ID of the file’s owner. st_gid The group ID of the file. st_mode   Status of the file (see below). The status information word st_mode has the following bits: #define S_IFMT 0170000 /* type of file */ #define S_IFIFO 0010000 /* named pipe (fifo) */ #define S_IFCHR 0020000 /* character special */ #define S_IFDIR 0040000 /* directory */ #define S_IFBLK 0060000 /* block special */ #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 */ #define S_IRUSR 0000400 /* read permission, owner */ #define S_IWUSR 0000200 /* write permission, owner */ #define S_IXUSR 0000100 /* execute/search permission, owner */ For a list of access modes, see

#include <sys/stat.h,>The following macros are available to test whether a st_mode value passed in the m argument corresponds to a file of the specified type: S_ISBLK (m); S_ISCHR (m); S_ISDIR (m); S_ISFIFO (m); S_ISLNK (m); S_ISREG (m); S_ISSOCK (m); S_ISWHT (m); Test for a block special file. Test for a character special file. Test for a directory. Test for a pipe or FIFO special file. Test for a symbolic link. NOTE: Inode structure is not supported by symbian and hence link count updation is not possible. Check for symbolic link would always fail because of this reason. Test for a regular file. Test for a socket. Test for a whiteout. The macros evaluate to a non-zero value if the test is true or to the value 0 if the test is false.

/**
 * Detailed description: Sample usage of wstat system call
 * Preconditions: Example.txt file should be present in working directory
**/
#include <fcntl.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <wchar.h>
int main()
{
  struct stat buf;
   if(wstat(L"Example.txt"  , &buf) < 0 )
   {
      printf("Failed to wstat Example.txt \n");
      return -1;
   }
   printf("wstat system call succeded \n");
   return 0;
 }

Output

wstat system call succeded

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