diff options
| -rw-r--r-- | hw/virtio-9p-local.c | 62 |
1 files changed, 58 insertions, 4 deletions
diff --git a/hw/virtio-9p-local.c b/hw/virtio-9p-local.c index 1d7cb32411..74c81a60dc 100644 --- a/hw/virtio-9p-local.c +++ b/hw/virtio-9p-local.c @@ -27,9 +27,38 @@ static const char *rpath(FsContext *ctx, const char *path) return buffer; } -static int local_lstat(FsContext *ctx, const char *path, struct stat *stbuf) + +static int local_lstat(FsContext *fs_ctx, const char *path, struct stat *stbuf) { - return lstat(rpath(ctx, path), stbuf); + int err; + err = lstat(rpath(fs_ctx, path), stbuf); + if (err) { + return err; + } + if (fs_ctx->fs_sm == SM_MAPPED) { + /* Actual credentials are part of extended attrs */ + uid_t tmp_uid; + gid_t tmp_gid; + mode_t tmp_mode; + dev_t tmp_dev; + if (getxattr(rpath(fs_ctx, path), "user.virtfs.uid", &tmp_uid, + sizeof(uid_t)) > 0) { + stbuf->st_uid = tmp_uid; + } + if (getxattr(rpath(fs_ctx, path), "user.virtfs.gid", &tmp_gid, + sizeof(gid_t)) > 0) { + stbuf->st_gid = tmp_gid; + } + if (getxattr(rpath(fs_ctx, path), "user.virtfs.mode", &tmp_mode, + sizeof(mode_t)) > 0) { + stbuf->st_mode = tmp_mode; + } + if (getxattr(rpath(fs_ctx, path), "user.virtfs.rdev", &tmp_dev, + sizeof(dev_t)) > 0) { + stbuf->st_rdev = tmp_dev; + } + } + return err; } static int local_set_xattr(const char *path, FsCred *credp) @@ -171,9 +200,34 @@ static int local_mkdir(FsContext *ctx, const char *path, mode_t mode) return mkdir(rpath(ctx, path), mode); } -static int local_fstat(FsContext *ctx, int fd, struct stat *stbuf) +static int local_fstat(FsContext *fs_ctx, int fd, struct stat *stbuf) { - return fstat(fd, stbuf); + int err; + err = fstat(fd, stbuf); + if (err) { + return err; + } + if (fs_ctx->fs_sm == SM_MAPPED) { + /* Actual credentials are part of extended attrs */ + uid_t tmp_uid; + gid_t tmp_gid; + mode_t tmp_mode; + dev_t tmp_dev; + + if (fgetxattr(fd, "user.virtfs.uid", &tmp_uid, sizeof(uid_t)) > 0) { + stbuf->st_uid = tmp_uid; + } + if (fgetxattr(fd, "user.virtfs.gid", &tmp_gid, sizeof(gid_t)) > 0) { + stbuf->st_gid = tmp_gid; + } + if (fgetxattr(fd, "user.virtfs.mode", &tmp_mode, sizeof(mode_t)) > 0) { + stbuf->st_mode = tmp_mode; + } + if (fgetxattr(fd, "user.virtfs.rdev", &tmp_dev, sizeof(dev_t)) > 0) { + stbuf->st_rdev = tmp_dev; + } + } + return err; } static int local_open2(FsContext *ctx, const char *path, int flags, mode_t mode) |