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author | deischen <deischen@FreeBSD.org> | 2001-02-11 22:06:43 +0000 |
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committer | deischen <deischen@FreeBSD.org> | 2001-02-11 22:06:43 +0000 |
commit | 1143b5e42a7816a7665798bcab7d5db4a37935b3 (patch) | |
tree | 3a588c82070b992d27ef67e1a69bcb90121e4ece /lib/libc/stdio/fileno.c | |
parent | d5657ce8b69e343a4dda07786bb158c464f9b4d6 (diff) | |
download | FreeBSD-src-1143b5e42a7816a7665798bcab7d5db4a37935b3.zip FreeBSD-src-1143b5e42a7816a7665798bcab7d5db4a37935b3.tar.gz |
libc MT-safety, part 2.
Add a lock to FILE. flockfile and friends are now implemented
(for the most part) in libc. flockfile_debug is implemented in
libc_r; I suppose it's about time to kill it but will do it in
a future commit.
Fix a potential deadlock in _fwalk in a threaded environment.
A file flag (__SIGN) was added to stdio.h that, when set, tells
_fwalk to ignore it in its walk. This seemed to be needed in
refill.c because each file needs to be locked when flushing.
Add a stub for pthread_self in libc. This is needed by flockfile
which is allowed by POSIX to be recursive.
Make fgetpos() error return value (-1) match man page.
Remove recursive calls to locked functions (stdio); I think I've
got them all, but I may have missed a couple.
A few K&R -> ANSI conversions along with removal of a few instances
of "register".
$Id$ -> $FreeBSD$ in libc/stdio/rget.c
Not objected to: -arch, a few months ago
Diffstat (limited to 'lib/libc/stdio/fileno.c')
-rw-r--r-- | lib/libc/stdio/fileno.c | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/lib/libc/stdio/fileno.c b/lib/libc/stdio/fileno.c index 0c3a8dc..b8f500e 100644 --- a/lib/libc/stdio/fileno.c +++ b/lib/libc/stdio/fileno.c @@ -45,13 +45,14 @@ static const char rcsid[] = #include <stdio.h> /* - * A subroutine version of the macro fileno. + * fileno has traditionally been a macro in <stdio.h>. That is + * no longer true because it needs to be thread-safe. + * + * #undef fileno */ -#undef fileno - int -fileno(fp) - FILE *fp; +fileno(FILE *fp) { + /* ??? - Should probably use atomic_read. */ return (__sfileno(fp)); } |