linux创建文件夹函数,Linux C 创建目录函数mkdir的mode设置问题

函数原型：

#include

int mkdir(const char *path, mode_t mode);

参数：

path是目录名

mode是目录权限

返回值：

返回0 表示成功， 返回 -1表示错误，并且会设置errno值。

mode模式位：

mode 表示新目录的权限，可以取以下值：

S_IRUSR

S_IREAD

S_IWUSR

S_IWRITE

S_IXUSR

S_IEXEC

S_IRWXU

This is equivalent to (S_IRUSR | S_IWUSR | S_IXUSR).

S_IRGRP

Read permission bit for the group owner of the file. Usually 040.

S_IWGRP

Write permission bit for the group owner of the file. Usually 020.

S_IXGRP

Execute or search permission bit for the group owner of the file. Usually 010.

S_IRWXG

This is equivalent to (S_IRGRP | S_IWGRP | S_IXGRP).

S_IROTH

Read permission bit for other users. Usually 04.

S_IWOTH

Write permission bit for other users. Usually 02.

S_IXOTH

Execute or search permission bit for other users. Usually 01.

S_IRWXO

This is equivalent to (S_IROTH | S_IWOTH | S_IXOTH).

S_ISUID

This is the set-user-ID on execute bit, usually 04000. See How Change Persona.

S_ISGID

This is the set-group-ID on execute bit, usually 02000. See How Change Persona.

S_ISVTX

This is the sticky bit, usually 01000.

例子：

#include #include

int status;

status = mkdir("/home/newdir", S_IRWXU | S_IRWXG | S_IROTH | S_IXOTH);

这样就创建了一个newdir目录，权限通过ls -al 查看为

drwxr-xr-x

跟用linux命令mkdir创建的目录权限位一致。