linux文件操作篇 (三) 文件状态和操作属性

#include <sys/stat.h>
 
int fstat(int fildes, struct stat *buf);
获取文件信息 
int lstat(const char* restrictpath, struct stat *restrictbuf);
获取文件信息 
int stat(const char* restrictpath, struct stat *restrictbuf);
获取文件信息 
   



   
   
   



int fstat(int fildes, struct stat *buf) //用于已经open的文件

/* 二者可用于还未打开的文件,其中,如果是软连接文件, lstat描述的是链接本身,stat则是描述链接所指向的文件 */
int lstat(const char *restrictpath, struct stat *restrictbuf);
int stat(const char *restrictpath, struct stat *restrictbuf);
struct stat *buf  //这是stat.h中的一个结构体,用于记录文件信息
   
   struct stat{                /* when _DARWIN_FEATURE_64_BIT_INODE is defined */
        dev_t          st_dev;           /* ID of device containing file 文件保存的设备*/
        mode_t         st_mode;          /* Mode of file (see below) 文件权限与文件类型信息*/
        nlink_t        st_nlink;         /* Number of hard links 该文件上硬链接的数量*/
        ino_t          st_ino;           /* File serial number 该文件的inode */
        uid_t          st_uid;           /* User ID of the file 该文件的用户id*/
        gid_t          st_gid;           /* Group ID of the file 该文件的组id*/
        dev_t          st_rdev;          /* Device ID */
        struct timespecst_atimespec;     /* time of last access 上次被访问的时间戳*/
        struct timespecst_mtimespec;     /* time of last data modification 上次被修改的时间戳*/
        struct timespecst_ctimespec;     /* time of last status change */
        struct timespecst_birthtimespec; /* time of file creation(birth) */
        off_t          st_size;          /* file size, in bytes */
        blkcnt_t       st_blocks;        /* blocks allocated for file */
        blksize_t      st_blksize;       /* optimal blocksize for I/O */
        uint32_t       st_flags;         /* user defined flags for file */
        uint32_t       st_gen;           /* file generation number */
        int32_t        st_lspare;        /* RESERVED: DO NOT USE! */
        int64_t        st_qspare[2];     /* RESERVED: DO NOT USE! */
    };
原文地址:https://www.cnblogs.com/kmist/p/10632442.html