/* Set freespace values */
void DEVICE::set_freespace(uint64_t freeval, uint64_t totalval, int errnoval, bool valid)
{
P(freespace_mutex);
free_space = freeval;
total_space = totalval;
free_space_errno = errnoval;
if (valid) {
set_freespace_ok();
} else {
clear_freespace_ok();
}
V(freespace_mutex);
}
/* Update the free space on the device */
bool DEVICE::update_freespace()
{
POOL_MEM ocmd(PM_FNAME);
POOLMEM* results;
char* icmd;
int timeout;
uint64_t free;
char ed1[50];
bool ok = false;
int status;
if (!is_dvd() || is_freespace_ok()) {
return true;
}
/* The device must be mounted in order to dvd-freespace to work */
mount(1);
Dsm_check(400);
icmd = device->free_space_command;
if (!icmd) {
free_space = 0;
free_space_errno = 0;
clear_freespace_ok(); /* No valid freespace */
clear_media();
Dmsg2(29, "ERROR: update_free_space_dev: free_space=%s, free_space_errno=%d (!icmd)\n",
edit_uint64(free_space, ed1), free_space_errno);
Mmsg(errmsg, _("No FreeSpace command defined.\n"));
return false;
}
edit_mount_codes(ocmd, icmd);
Dmsg1(29, "update_freespace: cmd=%s\n", ocmd.c_str());
results = get_pool_memory(PM_MESSAGE);
/* Try at most 3 times to get the free space on the device. This should perhaps be configurable. */
timeout = 3;
while (1) {
berrno be;
Dmsg1(20, "Run freespace prog=%s\n", ocmd.c_str());
status = run_program_full_output(ocmd.c_str(), max_open_wait/2, results);
Dmsg2(500, "Freespace status=%d result=%s\n", status, results);
if (status == 0) {
free = str_to_int64(results);
Dmsg1(400, "Free space program run: Freespace=%s\n", results);
if (free >= 0) {
free_space = free;
free_space_errno = 0;
set_freespace_ok(); /* have valid freespace */
set_media();
Mmsg(errmsg, "");
ok = true;
break;
}
}
free_space = 0;
free_space_errno = EPIPE;
clear_freespace_ok(); /* no valid freespace */
Mmsg2(errmsg, _("Cannot run free space command. Results=%s ERR=%s\n"),
results, be.bstrerror(status));
if (--timeout > 0) {
Dmsg4(40, "Cannot get free space on device %s. free_space=%s, "
"free_space_errno=%d ERR=%s\n", print_name(),
edit_uint64(free_space, ed1), free_space_errno,
errmsg);
bmicrosleep(1, 0);
continue;
}
dev_errno = free_space_errno;
Dmsg4(40, "Cannot get free space on device %s. free_space=%s, "
"free_space_errno=%d ERR=%s\n",
print_name(), edit_uint64(free_space, ed1),
free_space_errno, errmsg);
break;
}
free_pool_memory(results);
Dmsg4(29, "leave update_freespace: free_space=%s freespace_ok=%d free_space_errno=%d have_media=%d\n",
edit_uint64(free_space, ed1), !!is_freespace_ok(), free_space_errno, !!have_media());
Dsm_check(400);
return ok;
}
/*
* (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;
}