56 lines
1.7 KiB
Diff
56 lines
1.7 KiB
Diff
From 703eeab29a903faa239be620fa3711e7d586e078 Mon Sep 17 00:00:00 2001
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From: LiFeng <lifeng68@huawei.com>
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Date: Mon, 2 Sep 2019 06:24:07 -0400
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Subject: [PATCH 118/139] fix sscanf return value check
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Signed-off-by: LiFeng <lifeng68@huawei.com>
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---
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src/lxc/start.c | 2 +-
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src/lxc/utils.c | 10 +++++++---
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2 files changed, 8 insertions(+), 4 deletions(-)
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diff --git a/src/lxc/start.c b/src/lxc/start.c
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index 00d478c..c1e0d5d 100644
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--- a/src/lxc/start.c
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+++ b/src/lxc/start.c
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@@ -1904,7 +1904,7 @@ static int lxc_check_container_info(char *filename, pid_t pid, pid_t p_pid, unsi
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}
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num = sscanf(sbuf, "%d %Lu %d %Lu", &saved_pid, &saved_start_time, &saved_ppid, &saved_pstart_time);
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- if (num < 0) {
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+ if (num != 4) {
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SYSERROR("Call sscanf error");
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ret = -1;
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goto out;
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diff --git a/src/lxc/utils.c b/src/lxc/utils.c
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index 1d2e9ee..c83c7a3 100644
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--- a/src/lxc/utils.c
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+++ b/src/lxc/utils.c
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@@ -1952,8 +1952,8 @@ static proc_t *lxc_stat2proc(const char *S)
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/* parse these two strings separately, skipping the leading "(". */
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num = sscanf(S, "%d (%15c", &P->pid, P->cmd); /* comm[16] in kernel */
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- if (num < 0 && errno) {
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- ERROR("Call sscanf error: %s", strerror(errno));
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+ if (num != 2) {
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+ ERROR("Call sscanf error: %s", errno ? strerror(errno) : "");
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free(P);
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return NULL;
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}
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@@ -1985,7 +1985,11 @@ static proc_t *lxc_stat2proc(const char *S)
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&P->exit_signal, &P->processor, /* 2.2.1 ends with "exit_signal" */
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&P->rtprio, &P->sched /* both added to 2.5.18 */
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);
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-
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+ if (num != 35) {
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+ ERROR("Call sscanf error: %s", errno ? strerror(errno) : "");
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+ free(P);
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+ return NULL;
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+ }
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if (P->tty == 0)
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P->tty = -1; /* the old notty val, update elsewhere bef. moving to 0 */
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return P;
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--
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1.8.3.1
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