TheCloud/fuse-overlayfs
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main, open: avoid a chown if it is not needed

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Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
This commit is contained in:
Giuseppe Scrivano 2019-07-24 16:05:22 +02:00
parent 0749dd7fb8
commit a77edee351
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GPG Key ID: E4730F97F60286ED
1 changed files with 10 additions and 3 deletions
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9
main.c
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@ -2837,6 +2837,8 @@ ovl_do_open (fuse_req_t req, fuse_ino_t parent, const char *name, int flags, mod
cleanup_free char *path = NULL; cleanup_free char *path = NULL;
cleanup_close int fd = -1; cleanup_close int fd = -1;
const struct fuse_ctx *ctx = fuse_req_ctx (req); const struct fuse_ctx *ctx = fuse_req_ctx (req);
uid_t uid;
gid_t gid;
flags |= O_NOFOLLOW; flags |= O_NOFOLLOW;
@ -2898,11 +2900,16 @@ ovl_do_open (fuse_req_t req, fuse_ino_t parent, const char *name, int flags, mod
if (fd < 0) if (fd < 0)
return -1; return -1;
if (fchown (fd, get_uid (lo, ctx->uid), get_gid (lo, ctx->gid)) < 0) uid = get_uid (lo, ctx->uid);
gid = get_gid (lo, ctx->gid);
if (uid != lo->uid || gid != lo->gid)
{
if (fchown (fd, uid, gid) < 0)
{ {
unlinkat (lo->workdir_fd, wd_tmp_file_name, 0); unlinkat (lo->workdir_fd, wd_tmp_file_name, 0);
return -1; return -1;
} }
}
ret = asprintf (&path, "%s/%s", p->path, name); ret = asprintf (&path, "%s/%s", p->path, name);
if (ret < 0) if (ret < 0)