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O'Reilly Platform
book
LINUX系統程式設計 第二版
by
Robert Love
December 2013
Intermediate to advanced
496 pages
8h 57m
Chinese
GoTop Information, Inc.
Content preview from
LINUX系統程式設計 第二版
256
|
第八章
stat
系列函式
Unix
提供了一系列的函式可用於取得一個檔案的中介資料:
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
int stat (const char *path, struct stat *buf);
int fstat (int fd, struct stat *buf);
int lstat (const char *path, struct stat *buf);
這些函式都會傳回與一個檔案有關的資訊。
stat()
會傳回
path
所代表之檔案的相關
資訊,而
fstat()
函式會傳回檔案描述器
fd
所代表之檔案的相關資訊。
lstat()
如同
stat()
,除了符號連結的情況:
lstat()
所傳回的是關於連結本身(而非目標檔案)的
資訊。
這些函式都會把資訊存入一個
stat
結構(提供自用戶)。
stat
結構定義於
<bits/stat.
h>
,因此可以從
<sys/stat.h>
來引用它:
struct stat {
dev_t st_dev; /* ID of device containing file */
ino_t st_ino; /* inode number */
mode_t st_mode; /* permissions */
nlink_t st_nlink; /* number of hard links */
uid_t st_uid; /* user ID of owner ...
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Publisher Resources
ISBN: 9789862769812