取一个文件的最后修改时间，系统没有getftime应该怎么办？

topzrz

sunlan

使用fstat()函数

#include <sys/stat.h>;

int fstat(int fildes, struct stat *buf);


The stat structure shall contain at least the following members:

dev_t     st_dev     Device ID of device containing file.
ino_t     st_ino     File serial number.
mode_t    st_mode    Mode of file (see below).
nlink_t   st_nlink   Number of hard links to the file.
uid_t     st_uid     User ID of file.
gid_t     st_gid     Group ID of file.
[XSI]
dev_t     st_rdev    Device ID (if file is character or block special).

off_t     st_size    For regular files, the file size in bytes.
                     For symbolic links, the length in bytes of the
                     pathname contained in the symbolic link.
[SHM]
                     For a shared memory object, the length in bytes.

[TYM]
                     For a typed memory object, the length in bytes.

                     For other file types, the use of this field is
                     unspecified.
time_t    st_atime   Time of last access.
time_t    st_mtime   Time of last data modification.
time_t    st_ctime   Time of last status change.
[XSI]
blksize_t st_blksize A file system-specific preferred I/O block size for
                     this object. In some file system types, this may
                     vary from file to file.
blkcnt_t  st_blocks  Number of blocks allocated for this object.


time_t    st_mtime   Time of last data modification.