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#include <stdlib.h>
#include <stdio.h>
#include <ctype.h>
#include <signal.h>
#include <errno.h>
#include "config.h"
#include "mailleds.h"
extern int uid;
extern int euid;
extern int pid;
extern char opt_q;
extern char *pid_filename;
extern char *username;
void set_pidfilename(void)
{
int size = (strlen(PIDFILE_DIR) + strlen("/mailleds-") + strlen(username) + strlen(".pid") + 1);
pid_filename = (char *) xmalloc(size);
sprintf(pid_filename, "%s/mailleds-%s.pid", PIDFILE_DIR, username);
}
void write_pidfile(void)
{
FILE *pidfile;
if ((pidfile = fopen(pid_filename, "w")) == (FILE *) NULL) {
fprintf(stderr, "mailleds: could not write pidfile %s\n", pid_filename);
exit(-2);
}
fprintf(pidfile, "%d", pid);
fclose(pidfile);
}
int get_pid_from_file(char *pid_filename)
{
char buf[1024];
char *inc;
FILE *pid_file;
if ((pid_file = fopen(pid_filename, "r"))) {
fgets(buf, 1024, pid_file);
fclose(pid_file);
inc = buf;
while (isspace(*inc))
inc++;
return (atoi(inc));
} else {
return (0);
}
}
int pid_check(void)
{
int test_pid;
test_pid = get_pid_from_file(pid_filename);
if (test_pid) {
if (kill(test_pid, 0) < 0 && errno == ESRCH)
return (1); /* pidfile is stale -- override. */
if (!opt_q)
fprintf(stderr, "mailleds: mailleds process %d already running for %s\n", test_pid, username);
exit(-2);
} else {
return (1);
}
}
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