Author: tuexen
Date: Tue Jan 16 20:02:07 2018
New Revision: 328059
URL: https://svnweb.freebsd.org/changeset/base/328059
Log:
Improve the printing of cmgs when the length is 0. Fix error handling.
Modified:
head/usr.bin/truss/syscalls.c
Modified: head/usr.bin/truss/syscalls.c
==============================================================================
--- head/usr.bin/truss/syscalls.c Tue Jan 16 19:57:30 2018
(r328058)
+++ head/usr.bin/truss/syscalls.c Tue Jan 16 20:02:07 2018
(r328059)
@@ -1493,10 +1493,15 @@ print_cmsgs(FILE *fp, pid_t pid, bool receive, struct
bool first;
len = msghdr->msg_controllen;
+ if (len == 0) {
+ fputs("{}", fp);
+ return;
+ }
cmsgbuf = calloc(1, len);
if (get_struct(pid, msghdr->msg_control, cmsgbuf, len) == -1) {
fprintf(fp, "%p", msghdr->msg_control);
free(cmsgbuf);
+ return;
}
msghdr->msg_control = cmsgbuf;
first = true;
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