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passthrough_ll: add source option

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Right now, passthrough_ll will use "/" as source directory for passthrough.
We need more flexibility where user can specify path of directory to be
passed through.  Hence add an option "source=<source-dir>".

Signed-off-by: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
This commit is contained in:
Vivek Goyal 2018-08-14 21:37:02 +02:00 committed by Nikolaus Rath
parent 4a92a82f2e
commit e164f3ddb5
1 changed files with 19 additions and 2 deletions
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21
example/passthrough_ll.c
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@ -79,6 +79,7 @@ struct lo_data {
pthread_mutex_t mutex;
int debug;
int writeback;
const char *source;
struct lo_inode root; /* protected by lo->mutex */
};
@ -87,6 +88,9 @@ static const struct fuse_opt lo_opts[] = {
offsetof(struct lo_data, writeback), 1 },
{ "no_writeback",
offsetof(struct lo_data, writeback), 0 },
{ "source=%s",
offsetof(struct lo_data, source), 0 },
FUSE_OPT_END
};
@ -937,10 +941,23 @@ int main(int argc, char *argv[])
lo.debug = opts.debug;
lo.root.refcount = 2;
if (lo.source) {
struct stat stat;
int res;
res = lstat(lo.source, &stat);
if (res == -1)
err(1, "failed to stat source (\"%s\")", lo.source);
if (!S_ISDIR(stat.st_mode))
errx(1, "source is not a directory");
} else {
lo.source = "/";
}
lo.root.is_symlink = false;
lo.root.fd = open("/", O_PATH);
lo.root.fd = open(lo.source, O_PATH);
if (lo.root.fd == -1)
err(1, "open(\"/\", O_PATH)");
err(1, "open(\"%s\", O_PATH)", lo.source);
se = fuse_session_new(&args, &lo_oper, sizeof(lo_oper), &lo);
if (se == NULL)