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Registered in England and Wales under Company Registration No. 3798903 Subject: [PATCH 1/4] xfstests: Add an auxiliary program to create an AF_UNIX socket [ver #6] From: David Howells To: linux-xfs@vger.kernel.org Cc: hch@infradead.org, amir73il@gmail.com, david@fromorbit.com, fstests@vger.kernel.org, dhowells@redhat.com, linux-fsdevel@vger.kernel.org Date: Wed, 05 Apr 2017 13:49:19 +0100 Message-ID: <149139655968.12368.18434671350530288572.stgit@warthog.procyon.org.uk> User-Agent: StGit/0.17.1-dirty MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.26]); Wed, 05 Apr 2017 12:49:22 +0000 (UTC) Sender: linux-fsdevel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Add an auxiliary program to create an AF_UNIX socket at the specified location so that tests can do things with it. Signed-off-by: David Howells Reviewed-by: Darrick J. Wong --- .gitignore | 1 + src/Makefile | 2 +- src/af_unix.c | 66 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 68 insertions(+), 1 deletion(-) create mode 100644 src/af_unix.c diff --git a/.gitignore b/.gitignore index 1ed2a92..8a7c052 100644 --- a/.gitignore +++ b/.gitignore @@ -35,6 +35,7 @@ /ltp/iogen # src/ binaries +/src/af_unix /src/alloc /src/append_reader /src/append_writer diff --git a/src/Makefile b/src/Makefile index a7f27f0..716c178 100644 --- a/src/Makefile +++ b/src/Makefile @@ -12,7 +12,7 @@ TARGETS = dirstress fill fill2 getpagesize holes lstat64 \ godown resvtest writemod makeextents itrash rename \ multi_open_unlink dmiperf unwritten_sync genhashnames t_holes \ t_mmap_writev t_truncate_cmtime dirhash_collide t_rename_overwrite \ - holetest t_truncate_self t_mmap_dio + holetest t_truncate_self t_mmap_dio af_unix LINUX_TARGETS = xfsctl bstat t_mtab getdevicesize preallo_rw_pattern_reader \ preallo_rw_pattern_writer ftrunc trunc fs_perms testx looptest \ diff --git a/src/af_unix.c b/src/af_unix.c new file mode 100644 index 0000000..dc2368e --- /dev/null +++ b/src/af_unix.c @@ -0,0 +1,66 @@ +/* Create an AF_UNIX socket. + * + * Copyright (C) 2017 Red Hat, Inc. All Rights Reserved. + * Written by David Howells (dhowells@redhat.com) + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public Licence + * as published by the Free Software Foundation; either version + * 2 of the Licence, or (at your option) any later version. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#define offsetof(TYPE, MEMBER) ((size_t)&((TYPE *)0)->MEMBER) + +int main(int argc, char *argv[]) +{ + struct sockaddr_un sun; + struct stat st; + size_t len, max; + int fd; + + if (argc != 2) { + fprintf(stderr, "Format: %s \n", argv[0]); + exit(2); + } + + max = sizeof(sun.sun_path); + len = strlen(argv[1]); + if (len >= max) { + fprintf(stderr, "Filename too long (max %zu)\n", max); + exit(2); + } + + fd = socket(AF_UNIX, SOCK_DGRAM, 0); + if (fd < 0) { + perror("socket"); + exit(1); + } + + memset(&sun, 0, sizeof(sun)); + sun.sun_family = AF_UNIX; + strcpy(sun.sun_path, argv[1]); + if (bind(fd, (struct sockaddr *)&sun, sizeof(sun)) == -1) { + perror("bind"); + exit(1); + } + + if (stat(argv[1], &st)) { + fprintf(stderr, "Couldn't stat socket after creation: %m\n"); + exit(1); + } + + exit(0); +}