Date: Tue, 28 Feb 2017 22:18:05 +0000 (UTC) From: Alan Somers <asomers@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-10@freebsd.org Subject: svn commit: r314425 - in stable/10: etc/mtree sbin/devd usr.bin/cmp usr.bin/cmp/tests usr.bin/tail usr.bin/tail/tests usr.sbin/route6d Message-ID: <201702282218.v1SMI5Is068122@repo.freebsd.org>
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Author: asomers Date: Tue Feb 28 22:18:05 2017 New Revision: 314425 URL: https://svnweb.freebsd.org/changeset/base/314425 Log: MFC r311572, r311895, r311928, r311985, r312395, r312417 r311572: Fix file descriptor leaks in cmp(1) Also, add a few test cases Reported by: Coverity CID: 271624 275338 Reviewed by: ngie MFC after: 4 weeks Sponsored by: Spectra Logic Corp Differential Revision: https://reviews.freebsd.org/D9074 r311895: Fix memory leaks during "tail -r" of an irregular file * Rewrite r_buf to use standard tail queues instead of a hand-rolled circular linked list. Free dynamic allocations when done. * Remove an optimization for the case where the file is a multiple of 128KB in size and there is a scarcity of memory. * Add ATF tests for "tail -r" and its variants. Reported by: Valgrind Reviewed by: ngie MFC after: 4 weeks Sponsored by: Spectra Logic Corp Differential Revision: https://reviews.freebsd.org/D9067 r311928: Fix build of usr.bin/tail with GCC Submitted by: pluknet Reported by: pluknet MFC after: 27 days X-MFC-with: 311895 Sponsored by: Spectra Logic Corp r311985: Fix uninitialized variable CIDs in route6d The variables in question are actually return arguments, but it's still good form to initialize them. Reported by: Coverity CID: 979679 979680 MFC after: 4 weeks Sponsored by: Spectra Logic Corp r312395: Fix several Coverity CIDs in devd CID 1362055, 1362054: File descriptor leaks during shutdown CID 1362013: Potential null-termination fail with long network device names CID 1362097: Uncaught exception during memory pressure CID 1362017, 1362016: Unchecked errors, possibly resulting in weird behavior if two devd instances start at the same time. CID 1362015: Unchecked error that will probably never fail Reported by: Coverity CID: 1362055 1362054 1362013 1362097 1362017 1362016 1362015 MFC after: 4 weeks Sponsored by: Spectra Logic Corp r312417: Fix build of devd with GCC 4.2 Reported by: olivier Pointy-hat-to: asomers MFC after: 27 days X-MFC-with: 312395 Sponsored by: Spectra Logic Corp Added: stable/10/usr.bin/cmp/tests/cmp_test2.sh - copied unchanged from r311572, head/usr.bin/cmp/tests/cmp_test2.sh stable/10/usr.bin/tail/tests/ - copied from r311895, head/usr.bin/tail/tests/ Modified: stable/10/etc/mtree/BSD.tests.dist stable/10/sbin/devd/devd.cc stable/10/usr.bin/cmp/special.c stable/10/usr.bin/cmp/tests/Makefile stable/10/usr.bin/tail/Makefile stable/10/usr.bin/tail/reverse.c stable/10/usr.sbin/route6d/route6d.c Directory Properties: stable/10/ (props changed) Modified: stable/10/etc/mtree/BSD.tests.dist ============================================================================== --- stable/10/etc/mtree/BSD.tests.dist Tue Feb 28 21:47:00 2017 (r314424) +++ stable/10/etc/mtree/BSD.tests.dist Tue Feb 28 22:18:05 2017 (r314425) @@ -608,6 +608,8 @@ regress.multitest.out .. .. + tail + .. tar .. timeout Modified: stable/10/sbin/devd/devd.cc ============================================================================== --- stable/10/sbin/devd/devd.cc Tue Feb 28 21:47:00 2017 (r314424) +++ stable/10/sbin/devd/devd.cc Tue Feb 28 22:18:05 2017 (r314425) @@ -95,6 +95,7 @@ __FBSDID("$FreeBSD$"); #include <map> #include <string> #include <list> +#include <stdexcept> #include <vector> #include "devd.h" /* C compatible definitions */ @@ -372,7 +373,7 @@ media::do_match(config &c) s = socket(PF_INET, SOCK_DGRAM, 0); if (s >= 0) { memset(&ifmr, 0, sizeof(ifmr)); - strncpy(ifmr.ifm_name, value.c_str(), sizeof(ifmr.ifm_name)); + strlcpy(ifmr.ifm_name, value.c_str(), sizeof(ifmr.ifm_name)); if (ioctl(s, SIOCGIFMEDIA, (caddr_t)&ifmr) >= 0 && ifmr.ifm_status & IFM_AVALID) { @@ -856,8 +857,10 @@ create_socket(const char *name, int sock if (::bind(fd, (struct sockaddr *) & sun, slen) < 0) err(1, "bind"); listen(fd, 4); - chown(name, 0, 0); /* XXX - root.wheel */ - chmod(name, 0666); + if (chown(name, 0, 0)) /* XXX - root.wheel */ + err(1, "chown"); + if (chmod(name, 0666)) + err(1, "chmod"); return (fd); } @@ -1043,7 +1046,13 @@ event_loop(void) buffer[rv] = '\0'; while (buffer[--rv] == '\n') buffer[rv] = '\0'; - process_event(buffer); + try { + process_event(buffer); + } + catch (std::length_error e) { + devdlog(LOG_ERR, "Dropping event %s " + "due to low memory", buffer); + } } else if (rv < 0) { if (errno != EINTR) break; @@ -1061,6 +1070,8 @@ event_loop(void) if (FD_ISSET(seqpacket_fd, &fds)) new_client(seqpacket_fd, SOCK_SEQPACKET); } + close(seqpacket_fd); + close(stream_fd); close(fd); } @@ -1203,7 +1214,8 @@ check_devd_enabled() if (val == 0) { warnx("Setting " SYSCTL " to 1000"); val = 1000; - sysctlbyname(SYSCTL, NULL, NULL, &val, sizeof(val)); + if (sysctlbyname(SYSCTL, NULL, NULL, &val, sizeof(val))) + err(1, "sysctlbyname"); } } Modified: stable/10/usr.bin/cmp/special.c ============================================================================== --- stable/10/usr.bin/cmp/special.c Tue Feb 28 21:47:00 2017 (r314424) +++ stable/10/usr.bin/cmp/special.c Tue Feb 28 22:18:05 2017 (r314425) @@ -99,6 +99,8 @@ eof: if (ferror(fp1)) } else if (feof(fp2)) eofmsg(file2); + fclose(fp2); + fclose(fp1); if (dfound) exit(DIFF_EXIT); } Modified: stable/10/usr.bin/cmp/tests/Makefile ============================================================================== --- stable/10/usr.bin/cmp/tests/Makefile Tue Feb 28 21:47:00 2017 (r314424) +++ stable/10/usr.bin/cmp/tests/Makefile Tue Feb 28 22:18:05 2017 (r314425) @@ -2,6 +2,7 @@ .include <bsd.own.mk> +ATF_TESTS_SH+= cmp_test2 NETBSD_ATF_TESTS_SH= cmp_test .include <netbsd-tests.test.mk> Copied: stable/10/usr.bin/cmp/tests/cmp_test2.sh (from r311572, head/usr.bin/cmp/tests/cmp_test2.sh) ============================================================================== --- /dev/null 00:00:00 1970 (empty, because file is newly added) +++ stable/10/usr.bin/cmp/tests/cmp_test2.sh Tue Feb 28 22:18:05 2017 (r314425, copy of r311572, head/usr.bin/cmp/tests/cmp_test2.sh) @@ -0,0 +1,67 @@ +# Copyright (c) 2017 Alan Somers +# 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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. +# +# $FreeBSD$ + +atf_test_case special +special_head() { + atf_set "descr" "Test cmp(1)'s handling of non-regular files" +} +special_body() { + echo 0123456789abcdef > a + echo 0123456789abcdeg > b + cat a | atf_check -s exit:0 cmp a - + cat a | atf_check -s exit:0 cmp - a + cat b | atf_check -s not-exit:0 cmp a - + cat b | atf_check -s not-exit:0 cmp - a + true +} + +atf_test_case symlink +symlink_head() { + atf_set "descr" "Test cmp(1)'s handling of symlinks" +} +symlink_body() { + echo 0123456789abcdef > a + echo 0123456789abcdeg > b + ln -s a a.lnk + ln -s b b.lnk + ln -s a a2.lnk + cp a adup + ln -s adup adup.lnk + atf_check -s exit:0 cmp a a.lnk + atf_check -s exit:0 cmp a.lnk a + atf_check -s not-exit:0 -o ignore cmp a b.lnk + atf_check -s not-exit:0 -o ignore cmp b.lnk a + atf_check -s not-exit:0 -o ignore -e ignore cmp -h a a.lnk + atf_check -s not-exit:0 -o ignore -e ignore cmp -h a.lnk a + atf_check -s exit:0 cmp -h a.lnk a2.lnk + atf_check -s not-exit:0 -o ignore -e ignore cmp -h a.lnk adup.lnk +} + +atf_init_test_cases() +{ + atf_add_test_case special + atf_add_test_case symlink +} Modified: stable/10/usr.bin/tail/Makefile ============================================================================== --- stable/10/usr.bin/tail/Makefile Tue Feb 28 21:47:00 2017 (r314424) +++ stable/10/usr.bin/tail/Makefile Tue Feb 28 22:18:05 2017 (r314425) @@ -1,7 +1,13 @@ # $FreeBSD$ # @(#)Makefile 8.1 (Berkeley) 6/6/93 +.include <bsd.own.mk> + PROG= tail SRCS= forward.c misc.c read.c reverse.c tail.c +.if ${MK_TESTS} != "no" +SUBDIR+= tests +.endif + .include <bsd.prog.mk> Modified: stable/10/usr.bin/tail/reverse.c ============================================================================== --- stable/10/usr.bin/tail/reverse.c Tue Feb 28 21:47:00 2017 (r314424) +++ stable/10/usr.bin/tail/reverse.c Tue Feb 28 22:18:05 2017 (r314425) @@ -40,6 +40,7 @@ static char sccsid[] = "@(#)reverse.c 8. __FBSDID("$FreeBSD$"); #include <sys/param.h> +#include <sys/queue.h> #include <sys/stat.h> #include <sys/mman.h> @@ -169,12 +170,12 @@ r_reg(FILE *fp, const char *fn, enum STY ierr(fn); } -typedef struct bf { - struct bf *next; - struct bf *prev; - int len; - char *l; -} BF; +#define BSZ (128 * 1024) +typedef struct bfelem { + TAILQ_ENTRY(bfelem) entries; + size_t len; + char l[BSZ]; +} bfelem_t; /* * r_buf -- display a non-regular file in reverse order by line. @@ -189,64 +190,44 @@ typedef struct bf { static void r_buf(FILE *fp, const char *fn) { - BF *mark, *tl, *tr; - int ch, len, llen; + struct bfelem *tl, *first = NULL; + size_t llen; char *p; - off_t enomem; + off_t enomem = 0; + TAILQ_HEAD(bfhead, bfelem) head; + + TAILQ_INIT(&head); + + while (!feof(fp)) { + size_t len; - tl = NULL; -#define BSZ (128 * 1024) - for (mark = NULL, enomem = 0;;) { /* * Allocate a new block and link it into place in a doubly * linked list. If out of memory, toss the LRU block and * keep going. */ - if (enomem || (tl = malloc(sizeof(BF))) == NULL || - (tl->l = malloc(BSZ)) == NULL) { - if (!mark) + while ((tl = malloc(sizeof(bfelem_t))) == NULL) { + first = TAILQ_FIRST(&head); + if (TAILQ_EMPTY(&head)) err(1, "malloc"); - if (enomem) - tl = tl->next; - else { - if (tl) - free(tl); - tl = mark; - } - enomem += tl->len; - } else if (mark) { - tl->next = mark; - tl->prev = mark->prev; - mark->prev->next = tl; - mark->prev = tl; - } else { - mark = tl; - mark->next = mark->prev = mark; + enomem += first->len; + TAILQ_REMOVE(&head, first, entries); + free(first); } + TAILQ_INSERT_TAIL(&head, tl, entries); /* Fill the block with input data. */ - for (p = tl->l, len = 0; - len < BSZ && (ch = getc(fp)) != EOF; ++len) - *p++ = ch; - - if (ferror(fp)) { - ierr(fn); - return; - } - - /* - * If no input data for this block and we tossed some data, - * recover it. - */ - if (!len && enomem) { - enomem -= tl->len; - tl = tl->prev; - break; + len = 0; + while ((!feof(fp)) && len < BSZ) { + p = tl->l + len; + len += fread(p, 1, BSZ - len, fp); + if (ferror(fp)) { + ierr(fn); + return; + } } tl->len = len; - if (ch == EOF) - break; } if (enomem) { @@ -255,37 +236,46 @@ r_buf(FILE *fp, const char *fn) } /* - * Step through the blocks in the reverse order read. The last char - * is special, ignore whether newline or not. + * Now print the lines in reverse order + * Outline: + * Scan backward for "\n", + * print forward to the end of the buffers + * free any buffers that start after the "\n" just found + * Loop */ - for (mark = tl;;) { - for (p = tl->l + (len = tl->len) - 1, llen = 0; len--; - --p, ++llen) - if (*p == '\n') { - if (llen) { + tl = TAILQ_LAST(&head, bfhead); + first = TAILQ_FIRST(&head); + while (tl != NULL) { + struct bfelem *temp; + + for (p = tl->l + tl->len - 1, llen = 0; p >= tl->l; + --p, ++llen) { + int start = (tl == first && p == tl->l); + + if ((*p == '\n') || start) { + struct bfelem *tr; + + if (start && llen) + WR(p, llen + 1); + else if (llen) WR(p + 1, llen); - llen = 0; - } - if (tl == mark) - continue; - for (tr = tl->next; tr->len; tr = tr->next) { - WR(tr->l, tr->len); - tr->len = 0; - if (tr == mark) - break; + tr = TAILQ_NEXT(tl, entries); + llen = 0; + if (tr != NULL) { + TAILQ_FOREACH_FROM_SAFE(tr, &head, + entries, temp) { + if (tr->len) + WR(&tr->l, tr->len); + TAILQ_REMOVE(&head, tr, + entries); + free(tr); + } } } + } tl->len = llen; - if ((tl = tl->prev) == mark) - break; - } - tl = tl->next; - if (tl->len) { - WR(tl->l, tl->len); - tl->len = 0; - } - while ((tl = tl->next)->len) { - WR(tl->l, tl->len); - tl->len = 0; + tl = TAILQ_PREV(tl, bfhead, entries); } + TAILQ_REMOVE(&head, first, entries); + free(first); } Modified: stable/10/usr.sbin/route6d/route6d.c ============================================================================== --- stable/10/usr.sbin/route6d/route6d.c Tue Feb 28 21:47:00 2017 (r314424) +++ stable/10/usr.sbin/route6d/route6d.c Tue Feb 28 22:18:05 2017 (r314425) @@ -1063,6 +1063,7 @@ sendpacket(struct sockaddr_in6 *sin6, in iov[0].iov_len = len; m.msg_iov = iov; m.msg_iovlen = 1; + m.msg_flags = 0; if (!idx) { m.msg_control = NULL; m.msg_controllen = 0; @@ -1127,6 +1128,7 @@ riprecv(void) cm = (struct cmsghdr *)cmsgbuf; m.msg_control = (caddr_t)cm; m.msg_controllen = sizeof(cmsgbuf); + m.msg_flags = 0; if ((len = recvmsg(ripsock, &m, 0)) < 0) { fatal("recvmsg"); /*NOTREACHED*/
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