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fuse: graceful shutdown when startup fails

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When FUSE startup encounters an error after opening the filesystem--for
example because of a bad mountpoint--it exited uncleanly, which is a
bit unfriendly.

Signed-off-by: Thomas Bertschinger <tahbertschinger@gmail.com>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
This commit is contained in:
Thomas Bertschinger 2024-10-04 20:06:54 -06:00 committed by Kent Overstreet
parent 9f20109509
commit 3829e49167
1 changed files with 25 additions and 14 deletions
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31
c_src/cmd_fusemount.c
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@ -1203,6 +1203,7 @@ int cmd_fusemount(int argc, char *argv[])
struct bch_opts bch_opts = bch2_opts_empty();
struct bf_context ctx = { 0 };
struct bch_fs *c = NULL;
struct fuse_session *se = NULL;
int ret = 0, i;
/* Parse arguments. */
@ -1263,17 +1264,22 @@ int cmd_fusemount(int argc, char *argv[])
bch2_err_str(PTR_ERR(c)));
/* Fuse */
struct fuse_session *se =
fuse_session_new(&args, &bcachefs_fuse_ops,
se = fuse_session_new(&args, &bcachefs_fuse_ops,
sizeof(bcachefs_fuse_ops), c);
if (!se)
die("fuse_lowlevel_new err: %m");
if (!se) {
fprintf(stderr, "fuse_lowlevel_new err: %m\n");
goto err;
}
if (fuse_set_signal_handlers(se) < 0)
die("fuse_set_signal_handlers err: %m");
if (fuse_set_signal_handlers(se) < 0) {
fprintf(stderr, "fuse_set_signal_handlers err: %m\n");
goto err;
}
if (fuse_session_mount(se, fuse_opts.mountpoint))
die("fuse_mount err: %m");
if (fuse_session_mount(se, fuse_opts.mountpoint)) {
fprintf(stderr, "fuse_mount err: %m\n");
goto err;
}
/* This print statement is a trigger for tests. */
printf("Fuse mount initialized.\n");
@ -1287,17 +1293,22 @@ int cmd_fusemount(int argc, char *argv[])
ret = fuse_session_loop(se);
/* Cleanup */
out:
if (se) {
fuse_session_unmount(se);
fuse_remove_signal_handlers(se);
fuse_session_destroy(se);
}
out:
free(fuse_opts.mountpoint);
fuse_opt_free_args(&args);
bf_context_free(&ctx);
return ret ? 1 : 0;
err:
bch2_fs_stop(c);
goto out;
}
#endif /* BCACHEFS_FUSE */