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Improve the printing of cmgs when the length is 0. Fix error handling.

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This commit is contained in:
Michael Tuexen 2018-01-16 20:02:07 +00:00
parent 3193be242b
commit 6accaf4a90
1 changed files with 5 additions and 0 deletions
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5
usr.bin/truss/syscalls.c
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@ -1493,10 +1493,15 @@ print_cmsgs(FILE *fp, pid_t pid, bool receive, struct msghdr *msghdr)
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;