Difference between revisions of "Daemonise.c"
From Organic Design wiki
(make nice ps name) |
m |
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| Line 1: | Line 1: | ||
| − | // | + | // Set name as seen in ps list |
| − | + | sprintf(*argv,"%s (peerd:%s)",peer,port); | |
| + | |||
| + | // Fork so parent can exit and return control to what invoked it | ||
pid_t pid = fork(); | pid_t pid = fork(); | ||
if (pid > 0) exit(EXIT_SUCCESS); | if (pid > 0) exit(EXIT_SUCCESS); | ||
if (pid < 0) exit(logErr("First fork() failed!")); | if (pid < 0) exit(logErr("First fork() failed!")); | ||
| + | |||
| + | // Become a new session leader with no controlling term | ||
if (setsid() < 0) exit(logErr("setsid() failed!")); | if (setsid() < 0) exit(logErr("setsid() failed!")); | ||
| + | |||
| + | // Fork again to be a non-session-leader which can't gain a controlling term | ||
pid = fork(); | pid = fork(); | ||
if (pid > 0) exit(EXIT_SUCCESS); | if (pid > 0) exit(EXIT_SUCCESS); | ||
if (pid < 0) exit(logErr("Second fork() failed!")); | if (pid < 0) exit(logErr("Second fork() failed!")); | ||
| − | chdir("/"); | + | |
| − | umask(0); | + | chdir("/"); // Don't keep any dir in use |
| + | umask(0); // Don't inherit any file perms mask | ||
//close(STDIN_FILENO); | //close(STDIN_FILENO); | ||
//close(STDOUT_FILENO); | //close(STDOUT_FILENO); | ||
//close(STDERR_FILENO); | //close(STDERR_FILENO); | ||
Revision as of 23:45, 21 July 2006
// Set name as seen in ps list sprintf(*argv,"%s (peerd:%s)",peer,port);
// Fork so parent can exit and return control to what invoked it pid_t pid = fork(); if (pid > 0) exit(EXIT_SUCCESS); if (pid < 0) exit(logErr("First fork() failed!"));
// Become a new session leader with no controlling term if (setsid() < 0) exit(logErr("setsid() failed!"));
// Fork again to be a non-session-leader which can't gain a controlling term pid = fork(); if (pid > 0) exit(EXIT_SUCCESS); if (pid < 0) exit(logErr("Second fork() failed!"));
chdir("/"); // Don't keep any dir in use umask(0); // Don't inherit any file perms mask //close(STDIN_FILENO); //close(STDOUT_FILENO); //close(STDERR_FILENO);
