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tweaks

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This commit is contained in:
David Rose 2002-09-05 16:46:17 +00:00
parent bb6fd11fab
commit 031feceb39
1 changed files with 13 additions and 11 deletions
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24
direct/src/autorestart/autorestart.c
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@ -56,12 +56,9 @@ exec_process() {
execvp(params[0], params); execvp(params[0], params);
fprintf(stderr, "Cannot exec %s: %s\n", params[0], strerror(errno)); fprintf(stderr, "Cannot exec %s: %s\n", params[0], strerror(errno));
/* Kill ourselves instead of exiting, to indicate the watching /* Exit with a status of 0, to indicate to the parent process that
process should stop. */ we should stop. */
kill(getpid(), SIGTERM); exit(0);
/* Shouldn't get here. */
exit(1);
} }
int int
@ -103,9 +100,10 @@ spawn_process() {
return (signal != SIGTERM && signal != SIGKILL); return (signal != SIGTERM && signal != SIGKILL);
} else { } else {
fprintf(stderr, "\nprocess exited with error code %d.\n\n", WEXITSTATUS(status)); int exit_status = WEXITSTATUS(status);
/* Normal exit is always a reason to respawn. */ fprintf(stderr, "\nprocess exited with status %d.\n\n", WEXITSTATUS(status));
return 1; /* Normal exit is a reason to respawn if the status indicates failure. */
return (exit_status != 0);
} }
} }
@ -205,7 +203,7 @@ double_fork() {
if (WIFSIGNALED(status)) { if (WIFSIGNALED(status)) {
fprintf(stderr, "child caught signal %d unexpectedly.\n", WTERMSIG(status)); fprintf(stderr, "child caught signal %d unexpectedly.\n", WTERMSIG(status));
} else { } else {
fprintf(stderr, "child exited with error code %d.\n", WEXITSTATUS(status)); fprintf(stderr, "child exited with status %d.\n", WEXITSTATUS(status));
} }
exit(1); exit(1);
} }
@ -224,7 +222,11 @@ help() {
fprintf(stderr, fprintf(stderr,
"This program is used to run a program as a background task and\n" "This program is used to run a program as a background task and\n"
"automatically restart it should it terminate for any reason other\n" "automatically restart it should it terminate for any reason other\n"
"than explicit user kill.\n\n" "than normal exit or explicit user kill.\n\n"
"If the program exits with a status of 0, indicating successful\n"
"completion, it is not restarted.\n\n"
"If the program is terminated via a TERM or KILL signal (e.g. via\n" "If the program is terminated via a TERM or KILL signal (e.g. via\n"
"kill [pid] or kill -i [pid]), it is assumed the user meant for the\n" "kill [pid] or kill -i [pid]), it is assumed the user meant for the\n"
"process to stop, and it is not restarted.\n\n"); "process to stop, and it is not restarted.\n\n");