From 21ad42cb37827ecdf67588d2f0d7d5bbe833e0f7 Mon Sep 17 00:00:00 2001 From: Noel Power Date: Tue, 4 Nov 2014 16:52:49 +0100 Subject: [PATCH] btrfs: don't leak opened directory handle Closing a directory handle file descriptor via close() is undefined, according to: http://pubs.opengroup.org/onlinepubs/9699919799/functions/dirfd.html Signed-off-by: Noel Power Reviewed-by: David Disseldorp --- source3/modules/vfs_btrfs.c | 22 ++++++++++++++++------ 1 file changed, 16 insertions(+), 6 deletions(-) diff --git a/source3/modules/vfs_btrfs.c b/source3/modules/vfs_btrfs.c index 4639d1c..dfab044 100644 --- a/source3/modules/vfs_btrfs.c +++ b/source3/modules/vfs_btrfs.c @@ -269,23 +269,29 @@ static NTSTATUS btrfs_get_compression(struct vfs_handle_struct *handle, int fd; bool opened = false; NTSTATUS status; + DIR *dir = NULL; if ((fsp != NULL) && (fsp->fh->fd != -1)) { fd = fsp->fh->fd; } else if (smb_fname != NULL) { if (S_ISDIR(smb_fname->st.st_ex_mode)) { - DIR *dir = opendir(smb_fname->base_name); + dir = opendir(smb_fname->base_name); if (dir == NULL) { return NT_STATUS_UNSUCCESSFUL; } + opened = true; fd = dirfd(dir); + if (fd < 0) { + status = NT_STATUS_UNSUCCESSFUL; + goto err_close; + } } else { fd = open(smb_fname->base_name, O_RDONLY); + if (fd < 0) { + return NT_STATUS_UNSUCCESSFUL; + } + opened = true; } - if (fd < 0) { - return NT_STATUS_UNSUCCESSFUL; - } - opened = true; } else { return NT_STATUS_INVALID_PARAMETER; } @@ -305,7 +311,11 @@ static NTSTATUS btrfs_get_compression(struct vfs_handle_struct *handle, status = NT_STATUS_OK; err_close: if (opened) { - close(fd); + if (dir != NULL) { + closedir(dir); + } else { + close(fd); + } } return status; -- 1.8.4.5