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51 lines
789 B
51 lines
789 B
#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include "daemonizer.h"
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int daemonize()
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{
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pid_t pid = fork();
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if(pid < 0)
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{
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return -1;
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}
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else if(pid > 0)
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{
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_exit(0);
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}
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else if(pid == 0)
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{
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int fds;
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int tmp;
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setsid();
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for(fds = getdtablesize(); fds >= 0; --fds)
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{
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if(fds != mediator_lockfd)
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close(fds);
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}
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fds = open("/dev/null", O_RDWR); /* stdin */
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tmp = dup(fds); /* stdout */
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tmp = dup(fds); /* stderr */
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umask(027);
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tmp = chdir("/");
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}
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return 0;
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}
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int write_pid(const char *pidfile)
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{
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FILE *pfile = fopen(pidfile, "w");
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if(pfile == NULL)
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{
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syslog(LOG_CRIT, "Error opening pid file '%s': %s", pidfile, strerror(errno));
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return -1;
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}
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fprintf(pfile, "%d", getpid());
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fclose(pfile);
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return 0;
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}
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