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#include <getopt.h>
#include <sys/uio.h>
#include <unistd.h>
#include "cmds.h"
#include "libbcachefs/error.h"
#include "libbcachefs.h"
#include "libbcachefs/super.h"
#include "tools-util.h"
static void usage(void)
{
puts("bcachefs fsck - filesystem check and repair\n"
"Usage: bcachefs fsck [OPTION]... <devices>\n"
"\n"
"Options:\n"
" -p Automatic repair (no questions)\n"
" -n Don't repair, only check for errors\n"
" -y Assume \"yes\" to all questions\n"
" -f Force checking even if filesystem is marked clean\n"
" -r, --ratelimit_errors Don't display more than 10 errors of a given type\n"
" -R, --reconstruct_alloc Reconstruct the alloc btree\n"
" -v Be verbose\n"
" -h, --help Display this help and exit\n"
"Report bugs to <linux-bcachefs@vger.kernel.org>");
}
static void setnonblocking(int fd)
{
int flags = fcntl(fd, F_GETFL);
if (fcntl(fd, F_SETFL, flags|O_NONBLOCK))
die("fcntl error: %m");
}
static int do_splice(int rfd, int wfd)
{
char buf[4096];
int r = read(rfd, buf, sizeof(buf));
if (r < 0 && errno == EAGAIN)
return 0;
if (r < 0)
return r;
if (!r)
return 1;
if (write(wfd, buf, r) != r)
die("write error");
return 0;
}
static int fsck_online(const char *dev_path)
{
int dev_idx;
struct bchfs_handle fs = bchu_fs_open_by_dev(dev_path, &dev_idx);
struct bch_ioctl_fsck_online fsck = { 0 };
int fsck_fd = ioctl(fs.ioctl_fd, BCH_IOCTL_FSCK_ONLINE, &fsck);
if (fsck_fd < 0)
die("BCH_IOCTL_FSCK_ONLINE error: %s", bch2_err_str(fsck_fd));
setnonblocking(STDIN_FILENO);
setnonblocking(fsck_fd);
while (true) {
fd_set fds;
FD_ZERO(&fds);
FD_SET(STDIN_FILENO, &fds);
FD_SET(fsck_fd, &fds);
select(fsck_fd + 1, &fds, NULL, NULL, NULL);
int r = do_splice(fsck_fd, STDOUT_FILENO) ?:
do_splice(STDIN_FILENO, fsck_fd);
if (r)
return r < 0 ? r : 0;
}
pr_info("done");
return 0;
}
int cmd_fsck(int argc, char *argv[])
{
static const struct option longopts[] = {
{ "ratelimit_errors", no_argument, NULL, 'r' },
{ "reconstruct_alloc", no_argument, NULL, 'R' },
{ "help", no_argument, NULL, 'h' },
{ NULL }
};
struct bch_opts opts = bch2_opts_empty();
unsigned i;
int opt, ret = 0;
opt_set(opts, degraded, true);
opt_set(opts, fsck, true);
opt_set(opts, fix_errors, FSCK_FIX_ask);
while ((opt = getopt_long(argc, argv,
"apynfo:rvh",
longopts, NULL)) != -1)
switch (opt) {
case 'a': /* outdated alias for -p */
case 'p':
case 'y':
opt_set(opts, fix_errors, FSCK_FIX_yes);
break;
case 'n':
opt_set(opts, nochanges, true);
opt_set(opts, fix_errors, FSCK_FIX_no);
break;
case 'f':
/* force check, even if filesystem marked clean: */
break;
case 'o':
ret = bch2_parse_mount_opts(NULL, &opts, optarg);
if (ret)
return ret;
break;
case 'r':
opt_set(opts, ratelimit_errors, true);
break;
case 'R':
opt_set(opts, reconstruct_alloc, true);
break;
case 'v':
opt_set(opts, verbose, true);
break;
case 'h':
usage();
exit(16);
}
args_shift(optind);
if (!argc) {
fprintf(stderr, "Please supply device(s) to check\n");
exit(8);
}
for (i = 0; i < argc; i++)
if (dev_mounted(argv[i]))
return fsck_online(argv[i]);
struct bch_fs *c = bch2_fs_open(argv, argc, opts);
if (IS_ERR(c)) {
fprintf(stderr, "error opening %s: %s\n", argv[0], bch2_err_str(PTR_ERR(c)));
exit(8);
}
if (test_bit(BCH_FS_errors_fixed, &c->flags)) {
fprintf(stderr, "%s: errors fixed\n", c->name);
ret |= 1;
}
if (test_bit(BCH_FS_error, &c->flags)) {
fprintf(stderr, "%s: still has errors\n", c->name);
ret |= 4;
}
bch2_fs_stop(c);
return ret;
}
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