求助： unlink 怎么还有权限问题

MMMIX

dahe_1984 发表于 2012-03-27 16:40
我说的是perl中如何实现，不是shell/

你可以用 ioctl，不过我觉得这个还是直接调用 chattr/lsattr 来的简单些。

luyi1983

回复 10# dahe_1984


    目录权限决定它下面的文件的权限？

Perl_Er

Figure 4.26. Summary of file access permission bits[td]

Constant	Description	Effect on regular file	Effect on directory
S_ISUID	set-user-ID	set effective user ID on execution	(not used)
S_ISGID	set-group-ID	if group-execute set then set effective group ID on execution; otherwise enable mandatory record locking (if supported)	set group ID of new files created in directory to group ID of directory
S_ISVTX	sticky bit	control caching of file contents (if supported)	restrict removal and renaming of files in directory
S_IRUSR	user-read	user permission to read file	user permission to read directory entries
S_IWUSR	user-write	user permission to write file	user permission to remove and create files in directory
S_IXUSR	user-execute	user permission to execute file	user permission to search for given pathname in directory
S_IRGRP	group-read	group permission to read file	group permission to read directory entries
S_IWGRP	group-write	group permission to write file	group permission to remove and create files in directory
S_IXGRP	group-execute	group permission to execute file	group permission to search for given pathname in directory
S_IROTH	other-read	other permission to read file	other permission to read directory entries
S_IWOTH	other-write	other permission to write file	other permission to remove and create files in directory
S_IXOTH	other-execute	other permission to execute file	other permission to search for given pathname in directory

dahe_1984

Perl_Er 发表于 2012-03-27 18:31
Figure 4.26. Summary of file access permission bits[/tr]

只能说你太牛了，不过我没搞这么复杂，直接把目录的权限改成了777，大家谁都可以读写就OK。

MMMIX

dahe_1984 发表于 2012-03-29 17:41
只能说你太牛了，不过我没搞这么复杂，直接把目录的权限改成了777，大家谁都可以读写就OK。

誰也都可以刪除，想來對你來說也是 OK 的。