Date: Fri, 26 Jun 2026 14:46:22 +0000 From: Dag-Erling=?utf-8?Q? Sm=C3=B8rg?=rav <des@FreeBSD.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org Subject: git: 8bda488114f3 - main - ping: Don't mix stdio and direct writes Message-ID: <6a3e90be.1ec4e.5e534e83@gitrepo.freebsd.org>
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The branch main has been updated by des: URL: https://cgit.FreeBSD.org/src/commit/?id=8bda488114f330d758e6741ff44882bb12b76c0d commit 8bda488114f330d758e6741ff44882bb12b76c0d Author: Dag-Erling Smørgrav <des@FreeBSD.org> AuthorDate: 2026-06-26 14:46:09 +0000 Commit: Dag-Erling Smørgrav <des@FreeBSD.org> CommitDate: 2026-06-26 14:46:09 +0000 ping: Don't mix stdio and direct writes POSIX does not allow mixing direct writes to STDOUT_FILENO with stdio operations on stdout like we do here. More importantly, it causes tests to fail randomly (or not-so-randomly after I added an fflush in a previous commit). MFC after: 1 week Reviewed by: markj Differential Revision: https://reviews.freebsd.org/D57884 --- sbin/ping/ping.c | 25 ++++++++++++++++--------- sbin/ping/ping6.c | 27 +++++++++++++++++---------- 2 files changed, 33 insertions(+), 19 deletions(-) diff --git a/sbin/ping/ping.c b/sbin/ping/ping.c index 19790af083f3..362264ff2428 100644 --- a/sbin/ping/ping.c +++ b/sbin/ping/ping.c @@ -982,8 +982,10 @@ ping(int argc, char *const *argv) (void)clock_gettime(CLOCK_MONOTONIC, &last); if (ntransmitted - nreceived - 1 > nmissedmax) { nmissedmax = ntransmitted - nreceived - 1; - if (options & F_MISSED) - (void)write(STDOUT_FILENO, &BBELL, 1); + if (options & F_MISSED) { + (void)putc(BBELL, stdout); + (void)fflush(stdout); + } } } } @@ -1084,8 +1086,10 @@ pinger(void) } ntransmitted++; sntransmitted++; - if (!(options & F_QUIET) && options & F_DOT) - (void)write(STDOUT_FILENO, &DOT[DOTidx++ % DOTlen], 1); + if (!(options & F_QUIET) && options & F_DOT) { + (void)putc(DOT[DOTidx++ % DOTlen], stdout); + (void)fflush(stdout); + } } /* @@ -1207,9 +1211,10 @@ pr_pack(char *buf, ssize_t cc, struct sockaddr_in *from, struct timespec *tv) return; } - if (options & F_DOT) - (void)write(STDOUT_FILENO, &BSPACE, 1); - else { + if (options & F_DOT) { + (void)putc(BSPACE, stdout); + (void)fflush(stdout); + } else { (void)printf("%zd bytes from %s: icmp_seq=%u", cc, pr_addr(from->sin_addr), seq); (void)printf(" ttl=%d", ip.ip_ttl); @@ -1217,8 +1222,10 @@ pr_pack(char *buf, ssize_t cc, struct sockaddr_in *from, struct timespec *tv) (void)printf(" time=%.3f ms", triptime); if (dupflag) (void)printf(" (DUP!)"); - if (options & F_AUDIBLE) - (void)write(STDOUT_FILENO, &BBELL, 1); + if (options & F_AUDIBLE) { + (void)putc(BBELL, stdout); + (void)fflush(stdout); + } if (options & F_MASK) { /* Just prentend this cast isn't ugly */ (void)printf(" mask=%s", diff --git a/sbin/ping/ping6.c b/sbin/ping/ping6.c index 1a4b2472b1bd..c7221cfeae8d 100644 --- a/sbin/ping/ping6.c +++ b/sbin/ping/ping6.c @@ -1242,8 +1242,10 @@ ping6(int argc, char *argv[]) clock_gettime(CLOCK_MONOTONIC, &last); if (ntransmitted - nreceived - 1 > nmissedmax) { nmissedmax = ntransmitted - nreceived - 1; - if (options & F_MISSED) - (void)write(STDOUT_FILENO, &BBELL, 1); + if (options & F_MISSED) { + (void)putc(BBELL, stdout); + (void)fflush(stdout); + } } } } @@ -1419,8 +1421,10 @@ pinger(void) (void)printf("ping: wrote %s %d chars, ret=%d\n", hostname, cc, i); } - if (!(options & F_QUIET) && options & F_DOT) - (void)write(STDOUT_FILENO, &DOT[DOTidx++ % DOTlen], 1); + if (!(options & F_QUIET) && options & F_DOT) { + (void)putc(DOT[DOTidx++ % DOTlen], stdout); + (void)fflush(stdout); + } return(0); } @@ -1617,11 +1621,14 @@ pr_pack(u_char *buf, int cc, struct msghdr *mhdr) return; } - if (options & F_DOT) - (void)write(STDOUT_FILENO, &BSPACE, 1); - else { - if (options & F_AUDIBLE) - (void)write(STDOUT_FILENO, &BBELL, 1); + if (options & F_DOT) { + (void)putc(BSPACE, stdout); + (void)fflush(stdout); + } else { + if (options & F_AUDIBLE) { + (void)putc(BBELL, stdout); + (void)fflush(stdout); + } (void)printf("%d bytes from %s, icmp_seq=%u", cc, pr_addr(from, fromlen), seq); (void)printf(" hlim=%d", hoplim); @@ -1810,7 +1817,7 @@ pr_pack(u_char *buf, int cc, struct msghdr *mhdr) } if (!(options & F_DOT)) { - (void)putchar('\n'); + (void)putc('\n', stdout); if (options & F_VERBOSE) pr_exthdrs(mhdr); (void)fflush(stdout);home | help
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