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Do not overwrite existing pidfile

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SVN revision: 422
This commit is contained in:
Stefan Ritt 2003-02-28 14:43:53 +00:00
parent 48de918834
commit e929656aee
1 changed files with 23 additions and 4 deletions
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27
src/elogd.c
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@ -6,6 +6,9 @@
Contents: Web server program for Electronic Logbook ELOG Contents: Web server program for Electronic Logbook ELOG
$Log$ $Log$
Revision 1.34 2003/02/28 14:43:53 midas
Do not overwrite existing pidfile
Revision 1.33 2003/02/27 21:30:26 midas Revision 1.33 2003/02/27 21:30:26 midas
Changed path for cookies, special case for Lynx Changed path for cookies, special case for Lynx
@ -11361,23 +11364,39 @@ struct timeval timeout;
{ {
int fd; int fd;
char buf[20]; char buf[20];
struct stat finfo;
if (pidfile[0] == 0) if (pidfile[0] == 0)
strcpy(pidfile, PIDFILE); strcpy(pidfile, PIDFILE);
/* check if file exists */
if (stat(pidfile, &finfo) >= 0)
{
printf("File \"%s\" exists, using \"%s.%d\" instead.\n", pidfile, pidfile, tcp_port);
sprintf(pidfile + strlen(pidfile), ".%d", tcp_port);
/* check again for the new name */
if (stat(pidfile, &finfo) >= 0)
{
/* never overwrite a file */
printf("Refuse to overwrite existing file \"%s\".\n", pidfile);
exit(1);
}
}
fd = open(pidfile, O_CREAT | O_RDWR, 0644); fd = open(pidfile, O_CREAT | O_RDWR, 0644);
if (fd < 0) if (fd < 0)
{ {
perror("server_loop"); sprintf(str, "Error creating pid file \"%s\"", pidfile);
printf("Error created pid file \"%s\".\n", pidfile); perror(str);
exit(1); exit(1);
} }
sprintf(buf, "%d\n", (int)getpid()); sprintf(buf, "%d\n", (int)getpid());
if (write(fd, buf, strlen(buf)) == -1) if (write(fd, buf, strlen(buf)) == -1)
{ {
perror("server_loop"); sprintf(str, "Error writing to pid file \"%s\"", pidfile);
printf("Error writing to pid file \"%s\".\n", pidfile); perror(str);
exit(1); exit(1);
} }
close(fd); close(fd);