Detailed description of function Stat ()

First, let's take a look at the solution of msdn: Stat (): Get status information on a file. parameters: Path: pointer to a string containing the path of existing file. buffer: pointer to a structure that stores results.

int _stat(   const char *path,   struct _stat *buffer );

The definition of Schema _ stat is on the Sys \ stat. H plane. You can view the content on your own, including the main fields:

St_gid

Numeric identifier of group that owns the file (Unix-specific) this field will always be zero on Windows systems. A redirected file is classified as a Windows file.

St_atime

Time of last access of file. Valid on NTFS but not on FAT formatted disk drives.

St_ctime

Time of creation of file. Valid on NTFS but not on FAT formatted disk drives.

St_dev

Drive Number of the disk containing the file (sameSt_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 thereforeSt_ino, Has no meaning in the fat, HPFs, or NTFS file systems.

St_mode

Bit mask for file-mode information._ S_ifdirBit is set if path specifies a directory;_ S_ifregBit 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 (sameSt_dev).

St_size

Size of the file in bytes; a 64-bit integer for variations withI64Suffix.

St_uid

Numeric identifier of user who owns file (Unix-specific). This field will always be zero on Windows systems. A redirected file is classified as a Windows file.

If path refers to a device,St_size, Various time fields,St_dev, AndSt_rdevFields in_ StatStructure 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.

The following uses a demo to describe the function usage.

# Include <stdio. h> # include <sys/types. h> # include <sys/STAT. h> int main (INT argc, char * argv []) {struct _ stat Buf; int result = 0; char * filename = "D: \ test.txt "; // note the delimiter Conversion Result = _ Stat (filename, & BUF); If (result = 0) {printf ("\ nfile infomation \ n "); printf ("file size = [% d] \ n", Buf. st_size); printf ("file Dev = [% C] \ n", Buf. st_rdev + 'A'); // Add the large a return 0;} return-1 ;}