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/*
* Authors: Kent Overstreet <kent.overstreet@gmail.com>
*
* GPLv2
*/
#include <ctype.h>
#include <errno.h>
#include <fcntl.h>
#include <getopt.h>
#include <stdbool.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <unistd.h>
#include <uuid/uuid.h>
#include "cmds.h"
#include "libbcachefs.h"
#include "libbcachefs/errcode.h"
#include "libbcachefs/opts.h"
#include "libbcachefs/super-io.h"
static void set_option_usage(void)
{
puts("bcachefs set-option \n"
"Usage: bcachefs set-option [OPTION].. device\n"
"\n"
"Options:\n");
bch2_opts_usage(OPT_MOUNT);
puts(" -h, --help display this help and exit\n"
"Report bugs to <linux-bcachefs@vger.kernel.org>");
exit(EXIT_SUCCESS);
}
int cmd_set_option(int argc, char *argv[])
{
struct bch_opt_strs new_opt_strs = bch2_cmdline_opts_get(&argc, argv, OPT_MOUNT);
struct bch_opts new_opts = bch2_parse_opts(new_opt_strs);
struct bch_opts open_opts = bch2_opts_empty();
unsigned i;
int opt, ret = 0;
opt_set(open_opts, nostart, true);
while ((opt = getopt(argc, argv, "h")) != -1)
switch (opt) {
case 'h':
set_option_usage();
break;
}
args_shift(optind);
if (!argc) {
fprintf(stderr, "Please supply device(s)\n");
exit(EXIT_FAILURE);
}
for (i = 0; i < argc; i++)
if (dev_mounted(argv[i]))
goto online;
struct bch_fs *c = bch2_fs_open(argv, argc, open_opts);
if (IS_ERR(c)) {
fprintf(stderr, "error opening %s: %s\n", argv[0], bch2_err_str(PTR_ERR(c)));
exit(EXIT_FAILURE);
}
for (i = 0; i < bch2_opts_nr; i++) {
u64 v = bch2_opt_get_by_id(&new_opts, i);
if (!bch2_opt_defined_by_id(&new_opts, i))
continue;
ret = bch2_opt_check_may_set(c, i, v);
if (ret < 0) {
fprintf(stderr, "error setting %s: %i\n",
bch2_opt_table[i].attr.name, ret);
break;
}
bch2_opt_set_sb(c, bch2_opt_table + i, v);
bch2_opt_set_by_id(&c->opts, i, v);
}
bch2_fs_stop(c);
return ret;
online:
{
unsigned dev_idx;
struct bchfs_handle fs = bchu_fs_open_by_dev(argv[i], &dev_idx);
for (i = 0; i < bch2_opts_nr; i++) {
if (!new_opt_strs.by_id[i])
continue;
char *path = mprintf("options/%s", bch2_opt_table[i].attr.name);
write_file_str(fs.sysfs_fd, path, new_opt_strs.by_id[i]);
free(path);
}
}
return 0;
}
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