/*
* Mount the device.
* If timeout, wait until the mount command returns 0.
* If !timeout, try to mount the device only once.
*/
bool DEVICE::mount(DCR *dcr, int timeout)
{
bool retval = true;
Dmsg0(190, "Enter mount\n");
if (is_mounted()) {
return true;
}
retval = mount_backend(dcr, timeout);
/*
* When the mount command succeeded sent a
* bsdEventDeviceMount plugin event so any plugin
* that want to do something can do things now.
*/
if (retval && generate_plugin_event(dcr->jcr, bsdEventDeviceMount, dcr) != bRC_OK) {
retval = false;
}
/*
* Mark the device mounted if we succeed.
*/
if (retval) {
set_mounted();
}
return retval;
}
/*
* (Un)mount the device (either a FILE or DVD device)
*/
bool DEVICE::do_file_mount(int mount, int dotimeout)
{
POOL_MEM ocmd(PM_FNAME);
POOLMEM *results;
DIR* dp;
char *icmd;
struct dirent *entry, *result;
int status, tries, name_max, count;
berrno be;
Dsm_check(200);
if (mount) {
icmd = device->mount_command;
} else {
icmd = device->unmount_command;
}
clear_freespace_ok();
edit_mount_codes(ocmd, icmd);
Dmsg2(100, "do_file_mount: cmd=%s mounted=%d\n", ocmd.c_str(), !!is_mounted());
if (dotimeout) {
/* Try at most 10 times to (un)mount the device. This should perhaps be configurable. */
tries = 10;
} else {
tries = 1;
}
results = get_memory(4000);
/* If busy retry each second */
Dmsg1(100, "do_file_mount run_prog=%s\n", ocmd.c_str());
while ((status = run_program_full_output(ocmd.c_str(), max_open_wait/2, results)) != 0) {
/* Doesn't work with internationalization (This is not a problem) */
if (mount && fnmatch("*is already mounted on*", results, 0) == 0) {
break;
}
if (!mount && fnmatch("* not mounted*", results, 0) == 0) {
break;
}
if (tries-- > 0) {
/* Sometimes the device cannot be mounted because it is already mounted.
* Try to unmount it, then remount it */
if (mount) {
Dmsg1(400, "Trying to unmount the device %s...\n", print_name());
do_file_mount(0, 0);
}
bmicrosleep(1, 0);
continue;
}
Dmsg5(100, "Device %s cannot be %smounted. stat=%d result=%s ERR=%s\n", print_name(),
(mount ? "" : "un"), status, results, be.bstrerror(status));
Mmsg(errmsg, _("Device %s cannot be %smounted. ERR=%s\n"),
print_name(), (mount ? "" : "un"), be.bstrerror(status));
/*
* Now, just to be sure it is not mounted, try to read the filesystem.
*/
name_max = pathconf(".", _PC_NAME_MAX);
if (name_max < 1024) {
name_max = 1024;
}
if (!(dp = opendir(device->mount_point))) {
berrno be;
dev_errno = errno;
Dmsg3(100, "do_file_mount: failed to open dir %s (dev=%s), ERR=%s\n",
device->mount_point, print_name(), be.bstrerror());
goto get_out;
}
entry = (struct dirent *)malloc(sizeof(struct dirent) + name_max + 1000);
count = 0;
while (1) {
if ((readdir_r(dp, entry, &result) != 0) || (result == NULL)) {
dev_errno = EIO;
Dmsg2(129, "do_file_mount: failed to find suitable file in dir %s (dev=%s)\n",
device->mount_point, print_name());
break;
}
if ((strcmp(result->d_name, ".")) && (strcmp(result->d_name, "..")) && (strcmp(result->d_name, ".keep"))) {
count++; /* result->d_name != ., .. or .keep (Gentoo-specific) */
break;
} else {
Dmsg2(129, "do_file_mount: ignoring %s in %s\n", result->d_name, device->mount_point);
}
}
free(entry);
closedir(dp);
Dmsg1(100, "do_file_mount: got %d files in the mount point (not counting ., .. and .keep)\n", count);
if (count > 0) {
/* If we got more than ., .. and .keep */
/* there must be something mounted */
if (mount) {
Dmsg1(100, "Did Mount by count=%d\n", count);
break;
} else {
/* An unmount request. We failed to unmount - report an error */
set_mounted(true);
free_pool_memory(results);
Dmsg0(200, "== error mount=1 wanted unmount\n");
return false;
}
}
get_out:
set_mounted(false);
free_pool_memory(results);
Dmsg0(200, "============ mount=0\n");
Dsm_check(200);
return false;
}
set_mounted(mount); /* set/clear mounted flag */
free_pool_memory(results);
Dmsg1(200, "============ mount=%d\n", mount);
return true;
}