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toollib: tweak background forking

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Log what is forked and replace #if 1 with DEBUG_CHILD.
This commit is contained in:
Alasdair G Kergon 2013-09-06 01:49:43 +01:00
parent 96880102a3
commit 10a5838a60
1 changed files with 7 additions and 4 deletions
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11
tools/toollib.c
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@ -44,7 +44,7 @@ int become_daemon(struct cmd_context *cmd, int skip_lvm)
.sa_flags = SA_NOCLDSTOP,
};
log_verbose("Forking background process");
log_verbose("Forking background process: %s", cmd->cmd_line);
sigaction(SIGCHLD, &act, NULL);
@ -65,8 +65,10 @@ int become_daemon(struct cmd_context *cmd, int skip_lvm)
log_error("Background process failed to setsid: %s",
strerror(errno));
/* For poll debugging it's best to disable for compilation */
#if 1
/* Set this to avoid discarding output from background process */
/* #define DEBUG_CHILD /* */
#ifndef DEBUG_CHILD
if ((null_fd = open(devnull, O_RDWR)) == -1) {
log_sys_error("open", devnull);
_exit(ECMD_FAILED);
@ -84,7 +86,8 @@ int become_daemon(struct cmd_context *cmd, int skip_lvm)
(void) close(null_fd);
init_verbose(VERBOSE_BASE_LEVEL);
#endif
#endif /* DEBUG_CHILD */
strncpy(*cmd->argv, "(lvm2)", strlen(*cmd->argv));
if (!skip_lvm) {