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main: provide implementation for fallocate

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Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
This commit is contained in:
Giuseppe Scrivano 2019-07-22 08:45:01 +02:00
parent 784b3fd549
commit b0bc506690
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GPG Key ID: E4730F97F60286ED
1 changed files with 41 additions and 0 deletions
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41
main.c
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@ -4200,6 +4200,46 @@ ovl_ioctl (fuse_req_t req, fuse_ino_t ino, unsigned int cmd, void *arg,
fuse_reply_ioctl (req, 0, &r, out_bufsz ? sizeof (r) : 0);
}
static void
ovl_fallocate (fuse_req_t req, fuse_ino_t ino, int mode, off_t offset, off_t length, struct fuse_file_info *fi)
{
cleanup_lock int l = enter_big_lock ();
struct ovl_data *lo = ovl_data (req);
cleanup_close int fd = -1;
struct ovl_node *node;
int ret;
if (ovl_debug (req))
fprintf (stderr, "ovl_fallocate(ino=%" PRIu64 ", mode=%d, offset=%llou, length=%llu, fi=%p)\n",
ino, mode, offset, length, fi);
node = do_lookup_file (lo, ino, NULL);
if (node == NULL)
{
fuse_reply_err (req, ENOENT);
return;
}
node = get_node_up (lo, node);
if (node == NULL)
{
fuse_reply_err (req, errno);
return;
}
fd = TEMP_FAILURE_RETRY (openat (node_dirfd (node), node->path, O_NONBLOCK|O_NOFOLLOW|O_WRONLY));
if (fd < 0)
{
fuse_reply_err (req, errno);
return;
}
l = release_big_lock ();
ret = fallocate (fd, mode, offset, length);
fuse_reply_err (req, ret < 0 ? errno : 0);
}
static struct fuse_lowlevel_ops ovl_oper =
{
.statfs = ovl_statfs,
@ -4233,6 +4273,7 @@ static struct fuse_lowlevel_ops ovl_oper =
.fsync = ovl_fsync,
.fsyncdir = ovl_fsyncdir,
.ioctl = ovl_ioctl,
.fallocate = ovl_fallocate,
};
static int