diff options
| -rw-r--r-- | Makefile | 1 | ||||
| -rw-r--r-- | Versions | 2 | ||||
| -rw-r--r-- | include/bsd/stdio.h | 4 | ||||
| -rw-r--r-- | src/fpurge.c | 68 |
4 files changed, 74 insertions, 1 deletions
@@ -27,6 +27,7 @@ LIB_SRCS := \ err.c \ fgetln.c \ flopen.c \ + fpurge.c \ getpeereid.c \ heapsort.c \ merge.c \ @@ -86,5 +86,7 @@ LIBBSD_0.3 { mergesort; radixsort; sradixsort; + + fpurge; } LIBBSD_0.2; diff --git a/include/bsd/stdio.h b/include/bsd/stdio.h index dfde0c3..cdf4e50 100644 --- a/include/bsd/stdio.h +++ b/include/bsd/stdio.h @@ -1,5 +1,5 @@ /* - * Copyright © 2004, 2005, 2009 Guillem Jover + * Copyright © 2004, 2005, 2009, 2011 Guillem Jover * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions @@ -40,6 +40,8 @@ __BEGIN_DECLS const char *fmtcheck(const char *, const char *); char *fgetln(FILE *fp, size_t *lenp); + +int fpurge(FILE *fp); __END_DECLS #endif diff --git a/src/fpurge.c b/src/fpurge.c new file mode 100644 index 0000000..19d6537 --- /dev/null +++ b/src/fpurge.c @@ -0,0 +1,68 @@ +/* + * Copyright © 2011 Guillem Jover + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, + * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY + * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL + * THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, + * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; + * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, + * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR + * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF + * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#define _GNU_SOURCE 1 + +#include <errno.h> +#include <stdio.h> +#include <stdio_ext.h> + +#ifdef __GLIBC__ +int +fpurge(FILE *fp) +{ + if (fp == NULL || fileno(fp) < 0) { + errno = EBADF; + return EOF; + } + + __fpurge(fp); + + return 0; +} +#else +#error "Function fpurge() needs to be ported." +#endif + +#ifdef TEST +int +main() +{ + static FILE fp_bad; + FILE *fp; + + if (fpurge(&fp_bad) == 0) + return 1; + + fp = fopen("/dev/zero", "r"); + if (fpurge(fp) < 0) + return 1; + + fclose(fp); + + return 0; +} +#endif |