Author: pjd
Date: Thu Sep 5 01:05:48 2013
New Revision: 255227
URL: http://svnweb.freebsd.org/changeset/base/255227
Log:
Remove fallback to fork(2) if pdfork(2) is not available. If the parent
process dies, the process descriptor will be closed and pdfork(2)ed child
will be killed, which is not the case when regular fork(2) is used.
The PROCDESC option is now part of the GENERIC kernel configuration, so we
can start depending on it.
Add UPDATING entry to inform that this option is now required and log
detailed instruction to syslog if pdfork(2) is not available:
The pdfork(2) system call is not available; recompile the kernel with
options PROCDESC
Submitted by: Mariusz Zaborski <osho...@freebsd.org>
Sponsored by: Google Summer of Code 2013
Modified:
head/UPDATING
head/usr.sbin/rwhod/rwhod.c
Modified: head/UPDATING
==============================================================================
--- head/UPDATING Thu Sep 5 00:53:01 2013 (r255226)
+++ head/UPDATING Thu Sep 5 01:05:48 2013 (r255227)
@@ -32,6 +32,12 @@ NOTE TO PEOPLE WHO THINK THAT FreeBSD 10
"ln -s 'abort:false,junk:false' /etc/malloc.conf".)
20130905:
+ The PROCDESC kernel option is now part of the GENERIC kernel
+ configuration and is required for the rwhod(8) to work.
+ If you are using custom kernel configuration, you should include
+ 'options PROCDESC'.
+
+20130905:
The API and ABI related to the Capsicum framework was modified
in backward incompatible way. The userland libraries and programs
have to be recompiled to work with the new kernel. This includes the
Modified: head/usr.sbin/rwhod/rwhod.c
==============================================================================
--- head/usr.sbin/rwhod/rwhod.c Thu Sep 5 00:53:01 2013 (r255226)
+++ head/usr.sbin/rwhod/rwhod.c Thu Sep 5 01:05:48 2013 (r255227)
@@ -274,21 +274,17 @@ main(int argc, char *argv[])
exit(1);
if (!quiet_mode) {
pid_child_receiver = pdfork(&fdp, 0);
- if (pid_child_receiver == -1) {
- if (errno != ENOSYS) {
- syslog(LOG_ERR, "pdfork: %m");
- exit(1);
- } else {
- pid_child_receiver = fork();
- fdp = -1;
- }
- }
if (pid_child_receiver == 0) {
receiver_process();
} else if (pid_child_receiver > 0) {
sender_process();
} else if (pid_child_receiver == -1) {
- syslog(LOG_ERR, "pdfork: %m");
+ if (errno == ENOSYS) {
+ syslog(LOG_ERR,
+ "The pdfork(2) system call is not
available; recompile the kernel with options PROCDESC");
+ } else {
+ syslog(LOG_ERR, "pdfork: %m");
+ }
exit(1);
}
} else {
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