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304810208e
Using strlen() in an static array declaration is a GCC extension. Clang calls it "gnu-folding-constant" and warns about it, which breaks the build. If it were widespread we could just turn off the warning, but since there's only one case, lets just change the array to an explicit size. Sponsored-by: https://despairlabs.com/sponsor/ Reviewed-by: Alexander Motin <alexander.motin@TrueNAS.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Rob Norris <robn@despairlabs.com> Closes #17954
92 lines
2.4 KiB
C
92 lines
2.4 KiB
C
// SPDX-License-Identifier: CDDL-1.0
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/*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License (the "License").
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* You may not use this file except in compliance with the License.
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*
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* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
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* or https://opensource.org/licenses/CDDL-1.0.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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* If applicable, add the following below this CDDL HEADER, with the
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* fields enclosed by brackets "[]" replaced with your own identifying
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* information: Portions Copyright [yyyy] [name of copyright owner]
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*
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* CDDL HEADER END
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*/
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/*
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* Copyright (c) 2011, Fajar A. Nugraha. All rights reserved.
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* Use is subject to license terms.
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*/
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#include <ctype.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include <string.h>
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#include <unistd.h>
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#include <sys/fs/zfs.h>
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#include <sys/ioctl.h>
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#include <sys/stat.h>
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#if defined(ZFS_ASAN_ENABLED)
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/*
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* zvol_id is invoked by udev with the help of ptrace()
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* making sanitized binary with leak detection croak
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* because of tracing mechanisms collision
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*/
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extern const char *__asan_default_options(void);
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const char *__asan_default_options(void) {
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return ("abort_on_error=true:halt_on_error=true:"
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"allocator_may_return_null=true:disable_coredump=false:"
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"detect_stack_use_after_return=true:detect_leaks=false");
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}
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#endif
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int
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main(int argc, const char *const *argv)
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{
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if (argc != 2 || strncmp(argv[1], "/dev/zd", 7) != 0) {
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fprintf(stderr, "usage: %s /dev/zdX\n", argv[0]);
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return (1);
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}
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const char *dev_name = argv[1];
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size_t i, len;
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int fd;
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struct stat sb;
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if ((fd = open(dev_name, O_RDONLY|O_CLOEXEC)) == -1 ||
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fstat(fd, &sb) != 0) {
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fprintf(stderr, "%s: %s\n", dev_name, strerror(errno));
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return (1);
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}
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char zvol_name[MAXNAMELEN+15];
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if (ioctl(fd, BLKZNAME, zvol_name) == -1) {
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fprintf(stderr, "%s: BLKZNAME: %s\n",
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dev_name, strerror(errno));
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return (1);
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}
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const char *dev_part = strrchr(dev_name, 'p');
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len = strlen(zvol_name);
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if (dev_part != NULL) {
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sprintf(zvol_name + len, "-part%s", dev_part + 1);
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len = strlen(zvol_name);
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}
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for (i = 0; i < len; ++i)
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if (isblank(zvol_name[i]))
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zvol_name[i] = '+';
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puts(zvol_name);
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return (0);
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}
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