-pidfile option

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1166 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
bellard 2004-12-08 22:21:25 +00:00
parent fe2cece60e
commit f7cce89882
2 changed files with 51 additions and 1 deletions

View File

@ -202,6 +202,10 @@ Windows.
@item -full-screen
Start in full screen.
@item -pidfile file
Store the QEMU process PID in @var{file}. It is useful if you launch QEMU
from a script.
@end table
Network options:

48
vl.c
View File

@ -1666,6 +1666,46 @@ static int net_fd_init(NetDriverState *nd, int fd)
#endif /* !_WIN32 */
/***********************************************************/
/* pid file */
static char *pid_filename;
/* Remove PID file. Called on normal exit */
static void remove_pidfile(void)
{
unlink (pid_filename);
}
static void create_pidfile(const char *filename)
{
struct stat pidstat;
FILE *f;
/* Try to write our PID to the named file */
if (stat(filename, &pidstat) < 0) {
if (errno == ENOENT) {
if ((f = fopen (filename, "w")) == NULL) {
perror("Opening pidfile");
exit(1);
}
fprintf(f, "%d\n", getpid());
fclose(f);
pid_filename = qemu_strdup(filename);
if (!pid_filename) {
fprintf(stderr, "Could not save PID filename");
exit(1);
}
atexit(remove_pidfile);
}
} else {
fprintf(stderr, "%s already exists. Remove it and try again.\n",
filename);
exit(1);
}
}
/***********************************************************/
/* dumb display */
@ -2533,6 +2573,7 @@ void help(void)
"Debug/Expert options:\n"
"-monitor dev redirect the monitor to char device 'dev'\n"
"-serial dev redirect the serial port to char device 'dev'\n"
"-pidfile file Write PID to 'file'\n"
"-S freeze CPU at startup (use 'c' to start execution)\n"
"-s wait gdb connection to port %d\n"
"-p port change gdb connection port\n"
@ -2625,6 +2666,7 @@ enum {
QEMU_OPTION_serial,
QEMU_OPTION_loadvm,
QEMU_OPTION_full_screen,
QEMU_OPTION_pidfile,
};
typedef struct QEMUOption {
@ -2685,7 +2727,8 @@ const QEMUOption qemu_options[] = {
{ "serial", 1, QEMU_OPTION_serial },
{ "loadvm", HAS_ARG, QEMU_OPTION_loadvm },
{ "full-screen", 0, QEMU_OPTION_full_screen },
{ "pidfile", HAS_ARG, QEMU_OPTION_pidfile },
/* temporary options */
{ "pci", 0, QEMU_OPTION_pci },
{ "cirrusvga", 0, QEMU_OPTION_cirrusvga },
@ -3110,6 +3153,9 @@ int main(int argc, char **argv)
case QEMU_OPTION_full_screen:
full_screen = 1;
break;
case QEMU_OPTION_pidfile:
create_pidfile(optarg);
break;
}
}
}