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pespin gerrit-no-reply at lists.osmocom.orgpespin has submitted this change and it was merged. ( https://gerrit.osmocom.org/c/libosmocore/+/14429 ) Change subject: logging: Use reentrant ctime_r instead of ctime ...................................................................... logging: Use reentrant ctime_r instead of ctime It was noticed that multithreaded processes like osmo-trx can crash upon using ctime(). Related: OS#4055 Change-Id: I19ebf29a2f1fc855bb7d56766b338c7c3432dfd1 --- M src/logging.c 1 file changed, 8 insertions(+), 5 deletions(-) Approvals: pespin: Looks good to me, approved laforge: Looks good to me, but someone else must approve fixeria: Looks good to me, but someone else must approve Jenkins Builder: Verified diff --git a/src/logging.c b/src/logging.c index 4c86473..1c3544f 100644 --- a/src/logging.c +++ b/src/logging.c @@ -359,15 +359,18 @@ OSMO_SNPRINTF_RET(ret, rem, offset, len); #endif } else if (target->print_timestamp) { - char *timestr; time_t tm; if ((tm = time(NULL)) == (time_t) -1) goto err; - timestr = ctime(&tm); - timestr[strlen(timestr)-1] = '\0'; - ret = snprintf(buf + offset, rem, "%s ", timestr); - if (ret < 0) + /* Get human-readable representation of time. + man ctime: we need at least 26 bytes in buf */ + if (rem < 26 || !ctime_r(&tm, buf + offset)) goto err; + ret = strlen(buf + offset); + if (ret <= 0) + goto err; + /* Get rid of useless final '\n' added by ctime_r. We want a space instead. */ + buf[offset + ret - 1] = ' '; OSMO_SNPRINTF_RET(ret, rem, offset, len); } if (target->print_category) { -- To view, visit https://gerrit.osmocom.org/c/libosmocore/+/14429 To unsubscribe, or for help writing mail filters, visit https://gerrit.osmocom.org/settings Gerrit-Project: libosmocore Gerrit-Branch: master Gerrit-Change-Id: I19ebf29a2f1fc855bb7d56766b338c7c3432dfd1 Gerrit-Change-Number: 14429 Gerrit-PatchSet: 4 Gerrit-Owner: pespin <pespin at sysmocom.de> Gerrit-Reviewer: Jenkins Builder Gerrit-Reviewer: fixeria <axilirator at gmail.com> Gerrit-Reviewer: laforge <laforge at gnumonks.org> Gerrit-Reviewer: pespin <pespin at sysmocom.de> Gerrit-MessageType: merged -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.osmocom.org/pipermail/gerrit-log/attachments/20190613/e3071d4c/attachment.htm>