php - Recursive mkdir() and chmod()?

Question

When using mkdir() with the recursive flag set to true do all the created directories get the specified chmod or just the last one? For example:

mkdir('/doesnotExist1/doesnotExist2/doesnotExist3/', 0755, true);

Will the newly created directories /doesnotExist1/ and /doesnotExist1/doesnotExist2/ also get the same chmod as /doesnotExist1/doesnotExist2/doesnotExist3/ = 0755?

If not, is there any way to force the above behavior?

I would test this myself, but I don't have access to a *nix box ATM.

Answer 1

刚刚在 gentoo linux 上使用 PHP 5.2.12 进行了测试：它们都具有相同的权限。

soulmerge@shark-g:~$ php -a
Interactive shell

php > mkdir('asd/def/ghi', 0700, 1);
php > ^C
soulmerge@shark-g:~$ ls -hal asd
total 12K
drwx------  3 soulmerge soulmerge 4.0K 2010-01-12 10:32 .
drwxr-xr-x 79 soulmerge soulmerge 4.0K 2010-01-12 10:32 ..
drwx------  3 soulmerge soulmerge 4.0K 2010-01-12 10:32 def

Answer 2

负责 mkdir('localfilesystem', x, true) 的 C 函数是 main/streams/plain_wrapper.c 中的 php_plain_files_mkdir()。它需要php_mkdir(dir, mode TSRMLS_CC);它应该创建的“第一个”目录和VCWD_MKDIR(buf, (mode_t)mode))所有子目录。php_mkdir() 进行一些安全模式检查，然后还调用VCWD_MKDIR 所以是的，mode 参数用于 mkdir(p, x, true) 创建的所有目录。