static int __init make_umid_setup(void)
{
/* one function with the ordering we need ... */
make_uml_dir();
make_umid(printf);
return create_pid_file();
}
static int __init make_umid(void)
{
int fd, err;
char tmp[256];
if (umid_setup)
return 0;
make_uml_dir();
if (*umid == '\0') {
strlcpy(tmp, uml_dir, sizeof(tmp));
strlcat(tmp, "XXXXXX", sizeof(tmp));
fd = mkstemp(tmp);
if (fd < 0) {
printk(UM_KERN_ERR "make_umid - mkstemp(%s) failed: "
"%s\n", tmp, strerror(errno));
err = -errno;
goto err;
}
close(fd);
set_umid(&tmp[strlen(uml_dir)]);
/*
* There's a nice tiny little race between this unlink and
* the mkdir below. It'd be nice if there were a mkstemp
* for directories.
*/
if (unlink(tmp)) {
err = -errno;
goto err;
}
}
snprintf(tmp, sizeof(tmp), "%s%s", uml_dir, umid);
err = mkdir(tmp, 0777);
if (err < 0) {
err = -errno;
if (err != -EEXIST)
goto err;
if (umdir_take_if_dead(tmp) < 0)
goto err;
err = mkdir(tmp, 0777);
}
if (err) {
err = -errno;
printk(UM_KERN_ERR "Failed to create '%s' - err = %d\n", umid,
errno);
goto err;
}
umid_setup = 1;
create_pid_file();
err = 0;
err:
return err;
}
int __init make_umid(void)
{
int fd, err;
char tmp[256];
if(umid_setup)
return 0;
make_uml_dir();
if(*umid == '\0'){
strlcpy(tmp, uml_dir, sizeof(tmp));
strlcat(tmp, "XXXXXX", sizeof(tmp));
fd = mkstemp(tmp);
if(fd < 0){
printk("make_umid - mkstemp(%s) failed: %s\n",
tmp, strerror(errno));
err = -errno;
goto err;
}
close(fd);
set_umid(&tmp[strlen(uml_dir)]);
/* There's a nice tiny little race between this unlink and
* the mkdir below. It'd be nice if there were a mkstemp
* for directories.
*/
if(unlink(tmp)){
err = -errno;
goto err;
}
}
snprintf(tmp, sizeof(tmp), "%s%s", uml_dir, umid);
err = mkdir(tmp, 0777);
if(err < 0){
err = -errno;
if(err != -EEXIST)
goto err;
/* 1 -> this umid is already in use
* < 0 -> we couldn't remove the umid directory
* In either case, we can't use this umid, so return -EEXIST.
*/
if(not_dead_yet(tmp) != 0)
goto err;
err = mkdir(tmp, 0777);
}
if(err){
err = -errno;
printk("Failed to create '%s' - err = %d\n", umid, -errno);
goto err;
}
umid_setup = 1;
create_pid_file();
err = 0;
err:
return err;
}