Date: Wed, 18 Nov 1998 03:47:46 -0800 (PST) From: Bruce Evans <bde@FreeBSD.ORG> To: cvs-committers@FreeBSD.ORG, cvs-all@FreeBSD.ORG Subject: cvs commit: src/bin/cp utils.c Message-ID: <199811181147.DAA09307@freefall.freebsd.org>
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bde 1998/11/18 03:47:45 PST
Modified files:
bin/cp utils.c
Log:
Don't use mmap() for non-regular files, since st_size is only meaningful
for regular files. This fixes recent breakage of cp'ing from /dev/zero.
/dev/zero doesn't support mmap(), but the device driver mmap routines are
not called for mapping 0 bytes, so the error was not detected. mmap()
can't even be used for cp'ing special files that support mmap(), since
there is general way to determine the file size.
Revision Changes Path
1.21 +2 -2 src/bin/cp/utils.c
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