Date: Sun, 1 Mar 2015 00:22:17 +0000 (UTC) From: Ryan Stone <rstone@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r279433 - in head/sys: conf libkern sys Message-ID: <201503010022.t210MHVC083540@svn.freebsd.org>
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Author: rstone Date: Sun Mar 1 00:22:16 2015 New Revision: 279433 URL: https://svnweb.freebsd.org/changeset/base/279433 Log: Implement asprintf in libkern Differential Revision: https://reviews.freebsd.org/D1877 Reviewed by: pjd, jfv MFC After: 1 month Sponsored by: Sandvine Inc. Added: head/sys/libkern/asprintf.c (contents, props changed) Modified: head/sys/conf/files head/sys/sys/systm.h Modified: head/sys/conf/files ============================================================================== --- head/sys/conf/files Sun Mar 1 00:22:09 2015 (r279432) +++ head/sys/conf/files Sun Mar 1 00:22:16 2015 (r279433) @@ -3216,6 +3216,7 @@ kgssapi/gsstest.c optional kgssapi_debu # the file should be moved to conf/files.<arch> from here. # libkern/arc4random.c standard +libkern/asprintf.c standard libkern/bcd.c standard libkern/bsearch.c standard libkern/crc32.c standard Added: head/sys/libkern/asprintf.c ============================================================================== --- /dev/null 00:00:00 1970 (empty, because file is newly added) +++ head/sys/libkern/asprintf.c Sun Mar 1 00:22:16 2015 (r279433) @@ -0,0 +1,77 @@ +/*- + * Copyright (c) 2013-2015 Sandvine Inc. All rights reserved. + * All rights reserved. + * + * 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. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <sys/param.h> +#include <sys/systm.h> +#include <sys/malloc.h> + +#include <machine/stdarg.h> + +int +vasprintf(char **buf, struct malloc_type *mtp, const char *format, va_list va) +{ + int len, ret; + va_list tmp_va; + char dummy; + + va_copy(tmp_va, va); + len = vsnprintf(&dummy, 0, format, tmp_va); + va_end(tmp_va); + if (len < 0) { + *buf = NULL; + return (len); + } + + /* Account for null terminator. */ + len += 1; + *buf = malloc(len, mtp, M_NOWAIT); + if (*buf == NULL) + return (-1); + + ret = vsnprintf(*buf, len, format, va); + if (ret < 0) { + free(*buf, mtp); + *buf = NULL; + } + + return (ret); +} + +int +asprintf(char **buf, struct malloc_type *mtp, const char *format, ...) +{ + int ret; + va_list va; + + va_start(va, format); + ret = vasprintf(buf, mtp, format, va); + va_end(va); + + return (ret); +} Modified: head/sys/sys/systm.h ============================================================================== --- head/sys/sys/systm.h Sun Mar 1 00:22:09 2015 (r279432) +++ head/sys/sys/systm.h Sun Mar 1 00:22:16 2015 (r279433) @@ -205,11 +205,15 @@ int kvprintf(char const *, void (*)(int, __va_list) __printflike(1, 0); void log(int, const char *, ...) __printflike(2, 3); void log_console(struct uio *); +int asprintf(char **ret, struct malloc_type *mtp, const char *format, + ...) __printflike(3, 4); int printf(const char *, ...) __printflike(1, 2); int snprintf(char *, size_t, const char *, ...) __printflike(3, 4); int sprintf(char *buf, const char *, ...) __printflike(2, 3); int uprintf(const char *, ...) __printflike(1, 2); int vprintf(const char *, __va_list) __printflike(1, 0); +int vasprintf(char **ret, struct malloc_type *mtp, const char *format, + __va_list ap) __printflike(3, 0); int vsnprintf(char *, size_t, const char *, __va_list) __printflike(3, 0); int vsnrprintf(char *, size_t, int, const char *, __va_list) __printflike(4, 0); int vsprintf(char *buf, const char *, __va_list) __printflike(2, 0);
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