TheCloud/fuse-overlayfs
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main, open: avoid a stat when creating a file

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Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
This commit is contained in:
Giuseppe Scrivano 2019-07-24 17:45:04 +02:00
parent 1a3ae79283
commit 49c88306d7
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GPG Key ID: E4730F97F60286ED
1 changed files with 12 additions and 4 deletions
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16
main.c
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@ -2889,7 +2889,7 @@ create_file (struct ovl_data *lo, int dirfd, const char *path, uid_t uid, gid_t
}
static int
ovl_do_open (fuse_req_t req, fuse_ino_t parent, const char *name, int flags, mode_t mode, struct ovl_node **retnode)
ovl_do_open (fuse_req_t req, fuse_ino_t parent, const char *name, int flags, mode_t mode, struct ovl_node **retnode, struct stat *st)
{
struct ovl_data *lo = ovl_data (req);
struct ovl_node *n;
@ -2937,6 +2937,7 @@ ovl_do_open (fuse_req_t req, fuse_ino_t parent, const char *name, int flags, mod
const struct fuse_ctx *ctx = fuse_req_ctx (req);
char wd_tmp_file_name[32];
bool need_delete_whiteout = true;
struct stat st_tmp;
if ((flags & O_CREAT) == 0)
{
@ -2974,7 +2975,13 @@ ovl_do_open (fuse_req_t req, fuse_ino_t parent, const char *name, int flags, mod
if (need_delete_whiteout && delete_whiteout (lo, -1, p, name) < 0)
return -1;
n = make_ovl_node (path, get_upper_layer (lo), name, 0, false, p, lo->fast_ino_check);
if (st == NULL)
st = &st_tmp;
if (fstat (fd, st) < 0)
return -1;
n = make_ovl_node (path, get_upper_layer (lo), name, st->st_ino, false, p, lo->fast_ino_check);
if (n == NULL)
{
errno = ENOMEM;
@ -3092,6 +3099,7 @@ ovl_create (fuse_req_t req, fuse_ino_t parent, const char *name,
struct fuse_entry_param e;
struct ovl_data *lo = ovl_data (req);
struct ovl_node *node = NULL;
struct stat st;
if (UNLIKELY (ovl_debug (req)))
fprintf (stderr, "ovl_create(parent=%" PRIu64 ", name=%s)\n",
@ -3099,7 +3107,7 @@ ovl_create (fuse_req_t req, fuse_ino_t parent, const char *name,
fi->flags = fi->flags | O_CREAT;
fd = ovl_do_open (req, parent, name, fi->flags, mode, &node);
fd = ovl_do_open (req, parent, name, fi->flags, mode, &node, &st);
if (fd < 0)
{
fuse_reply_err (req, errno);
@ -3128,7 +3136,7 @@ ovl_open (fuse_req_t req, fuse_ino_t ino, struct fuse_file_info *fi)
if (UNLIKELY (ovl_debug (req)))
fprintf (stderr, "ovl_open(ino=%" PRIu64 "s)\n", ino);
fd = ovl_do_open (req, ino, NULL, fi->flags, 0700, NULL);
fd = ovl_do_open (req, ino, NULL, fi->flags, 0700, NULL, NULL);
if (fd < 0)
{
fuse_reply_err (req, errno);