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Code Issues Releases Activity

Add (FILE *) locking.

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This commit is contained in:
Dmitrij Tejblum 1999-11-20 14:52:03 +00:00
parent e33f599134
commit 32fc781e06
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=53460
1 changed files with 9 additions and 0 deletions
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9
lib/libc/stdio/freopen.c
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@ -35,7 +35,11 @@
*/ */
#if defined(LIBC_SCCS) && !defined(lint) #if defined(LIBC_SCCS) && !defined(lint)
#if 0
static char sccsid[] = "@(#)freopen.c 8.1 (Berkeley) 6/4/93"; static char sccsid[] = "@(#)freopen.c 8.1 (Berkeley) 6/4/93";
#endif
static const char rcsid[] =
"$FreeBSD$";
#endif /* LIBC_SCCS and not lint */ #endif /* LIBC_SCCS and not lint */
#include <sys/types.h> #include <sys/types.h>
@ -45,6 +49,7 @@ static char sccsid[] = "@(#)freopen.c 8.1 (Berkeley) 6/4/93";
#include <unistd.h> #include <unistd.h>
#include <stdio.h> #include <stdio.h>
#include <stdlib.h> #include <stdlib.h>
#include <libc_private.h>
#include "local.h" #include "local.h"
/* /*
@ -65,6 +70,8 @@ freopen(file, mode, fp)
return (NULL); return (NULL);
} }
FLOCKFILE(fp);
if (!__sdidinit) if (!__sdidinit)
__sinit(); __sinit();
@ -129,6 +136,7 @@ freopen(file, mode, fp)
if (f < 0) { /* did not get it after all */ if (f < 0) { /* did not get it after all */
fp->_flags = 0; /* set it free */ fp->_flags = 0; /* set it free */
errno = sverrno; /* restore in case _close clobbered */ errno = sverrno; /* restore in case _close clobbered */
FUNLOCKFILE(fp);
return (NULL); return (NULL);
} }
@ -151,5 +159,6 @@ freopen(file, mode, fp)
fp->_write = __swrite; fp->_write = __swrite;
fp->_seek = __sseek; fp->_seek = __sseek;
fp->_close = __sclose; fp->_close = __sclose;
FUNLOCKFILE(fp);
return (fp); return (fp);
} }