which C function is best to check for directory EXISTANCE?
which C function is best to check for the existence of a *directory*? say that I am want to make postitve that /tmp/foo/ exists. ALso: which will make sure that the directory AND ffile tmp/foo/filename12345 exists and that I have read access to it? in other words, can playing around with access() and stat() be best? is there any new dirstat(PATh) that would work? just want to see which way is best? dank mucho, y'all! gary -- Gary Kline kl...@thought.org http://www.thought.org Public Service Unix Twenty-six years of service to the Unix community. ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
Re: which C function is best to check for directory EXISTANCE?
On Tue, 18 Dec 2012 16:26:10 -0800, Gary Kline wrote: which C function is best to check for the existence of a *directory*? say that I am want to make postitve that /tmp/foo/ exists. That can be done with the opendir() function; its manpage lists other interesting follow-up functions to work with. ALso: which will make sure that the directory AND ffile tmp/foo/filename12345 exists and that I have read access to it? You can use readdir() and parse its output. If you already know the file name, use a fopen() call for the mode you're trying to open it with (e. g. r or w) to see if the permissions are set accordingly. Also ferror() can be used to test for specific errors that may occur during file operations. in other words, can playing around with access() and stat() be best? That also sounds possible. In case you're going to continue to operate with the file in question, certain functions sound better. But for the pure testing, access() and stat() provide sufficient functionality. is there any new dirstat(PATh) that would work? $ man dirstat No manual entry for dirstat :-) just want to see which way is best? Depends. :-) -- Polytropon Magdeburg, Germany Happy FreeBSD user since 4.0 Andra moi ennepe, Mousa, ... ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
Re: which C function is best to check for directory EXISTANCE?
On Tue, 18 Dec 2012 16:26:10 -0800, Gary Kline kl...@thought.org said: G which C function is best to check for the existence of a *directory*? G say that I am want to make postitve that /tmp/foo/ exists. ALso: G which will make sure that the directory AND file G tmp/foo/filename12345 exists and that I have read access to it? I'd just call open() with O_RDONLY and if it fails, check errno for EACCESS (you don't have permission) or ENOENT (doesn't exist). -- Karl Vogel I don't speak for the USAF or my company USELESS PHRASES WHEN SPEAKING TO A COP #9: You're not gonna check the trunk, are you? ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
