Date: Mon, 8 Jan 2018 11:43:43 +0000 (UTC) From: Peter Holm <pho@FreeBSD.org> To: src-committers@freebsd.org, svn-src-user@freebsd.org Subject: svn commit: r327692 - user/pho/stress2/misc Message-ID: <201801081143.w08BhhHA031531@repo.freebsd.org>
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Author: pho Date: Mon Jan 8 11:43:42 2018 New Revision: 327692 URL: https://svnweb.freebsd.org/changeset/base/327692 Log: Limit runtime. Ensure that the buffer size is >= st_blksize. Sponsored by: Dell EMC Isilon Modified: user/pho/stress2/misc/kinfo2.sh Modified: user/pho/stress2/misc/kinfo2.sh ============================================================================== --- user/pho/stress2/misc/kinfo2.sh Mon Jan 8 11:08:45 2018 (r327691) +++ user/pho/stress2/misc/kinfo2.sh Mon Jan 8 11:43:42 2018 (r327692) @@ -41,19 +41,26 @@ mycc -o kinfo2 -Wall -Wextra kinfo2.c -lutil || exit 1 rm -f kinfo2.c mount | grep -q procfs || mount -t procfs procfs /proc -for i in `jot 20`; do +s=0 +for i in `jot 15`; do + pids="" for j in `jot 5`; do /tmp/kinfo2 & + pids="$pids $!" done - wait + for p in $pids; do + wait $p + [ $? -ne 0 ] && s=1 + done done rm -f /tmp/kinfo2 -exit 0 +exit $s EOF #include <sys/types.h> #include <sys/signal.h> +#include <sys/stat.h> #include <sys/wait.h> #include <dirent.h> @@ -101,8 +108,9 @@ list(void) struct dirent *dp; struct kinfo_file *freep; struct kinfo_vmentry *freep_vm; + struct stat sb; pid_t pid; - long base; + off_t base; long l; int cnt, fd, n; int space = sizeof(buf); @@ -112,10 +120,14 @@ list(void) if ((fd = open("/proc", O_RDONLY)) == -1) err(1, "open(%s)", "/proc"); + if (fstat(fd, &sb) == -1) + err(1, "fstat()"); do { if ((n = getdirentries(fd, bp, space, &base)) == -1) err(1, "getdirentries"); space = space - n; + if (space < sb.st_blksize) + break; bp = bp + n; } while (n != 0); close(fd);help
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