Date: Sun, 26 Jan 2003 04:19:47 -0800 From: Juli Mallett <jmallett@FreeBSD.org> To: Hiten Pandya <hiten@unixdaemons.com> Cc: "Tim J. Robbins" <tjr@FreeBSD.ORG>, cvs-committers@FreeBSD.ORG, cvs-all@FreeBSD.ORG Subject: Re: cvs commit: src/lib/libc/stdio fopen.3 freopen.c Message-ID: <20030126041947.A67649@FreeBSD.org> In-Reply-To: <20030126121550.GA58214@unixdaemons.com>; from hiten@unixdaemons.com on Sun, Jan 26, 2003 at 07:15:50AM -0500 References: <200301261001.h0QA1xpo065748@repoman.freebsd.org> <20030126121550.GA58214@unixdaemons.com>
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* De: Hiten Pandya <hiten@unixdaemons.com> [ Data: 2003-01-26 ] [ Subjecte: Re: cvs commit: src/lib/libc/stdio fopen.3 freopen.c ] > On Sun, Jan 26, 2003 at 02:01:59AM -0800, Tim J. Robbins wrote the words in effect of: > > tjr 2003/01/26 02:01:59 PST > > > > Modified files: > > lib/libc/stdio fopen.3 freopen.c > > Log: > > Initial implementation of the C99 feature whereby calling freopen() with > > a NULL filename argument allows a stream's mode to be changed. At the > > moment it just recycles the old file descriptor instead of storing the > > filename somewhere and using that to reopen the file, as the standard > > seems to require. Strictly conforming C99 applications probably can't > > tell the difference but POSIX ones can. > > > > PR: 46791 > > Is this like fmemopen()/open_memstream()? No, it's like changing the mode a FILE stream is opened as. So you can use freopen to go from being say "rb" to "w+", etc. The problems tjr points out relate to just using the fd, as opposed to doing what seems desired: actually reopen the stream in question, as opposed to just updating it. Or so I understand it. Thanx, juli. -- Juli Mallett <jmallett@FreeBSD.org> AIM: BSDFlata -- IRC: juli on EFnet. OpenDarwin, Mono, FreeBSD Developer. ircd-hybrid Developer, EFnet addict. FreeBSD on MIPS-Anything on FreeBSD. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe cvs-all" in the body of the message
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