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Re: [Qemu-devel] [PATCH 02/18] block.c: fix warning with _FORTIFY_SOURC
From: |
Blue Swirl |
Subject: |
Re: [Qemu-devel] [PATCH 02/18] block.c: fix warning with _FORTIFY_SOURCE |
Date: |
Tue, 22 Dec 2009 18:35:12 +0000 |
On Sun, Dec 20, 2009 at 1:39 AM, Kirill A. Shutemov
<address@hidden> wrote:
> CC block.o
> cc1: warnings being treated as errors
> block.c: In function 'bdrv_open2':
> block.c:400: error: ignoring return value of 'realpath', declared with
> attribute warn_unused_result
>
> Signed-off-by: Kirill A. Shutemov <address@hidden>
> ---
> block.c | 4 ++--
> 1 files changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/block.c b/block.c
> index 3f3496e..30ae2b1 100644
> --- a/block.c
> +++ b/block.c
> @@ -396,8 +396,8 @@ int bdrv_open2(BlockDriverState *bs, const char
> *filename, int flags,
> if (is_protocol)
> snprintf(backing_filename, sizeof(backing_filename),
> "%s", filename);
> - else
> - realpath(filename, backing_filename);
> + else if (!realpath(filename, backing_filename))
> + return -errno;
>
> bdrv_qcow2 = bdrv_find_format("qcow2");
> options = parse_option_parameters("", bdrv_qcow2->create_options,
> NULL);
This patch appears to be correct considering:
- return value of realpath
- errno codes in the error case (as advertised by Linux man page and
the functions referenced by OpenBSD man page: lstat(), readlink(2) and
getcwd())
- return value of bdrv_open2().
- Re: [Qemu-devel] [PATCH 17/18] path.c fix warning with _FORTIFY_SOURCE, (continued)
- Re: [Qemu-devel] [PATCH 17/18] path.c fix warning with _FORTIFY_SOURCE, Blue Swirl, 2009/12/22
- Re: [Qemu-devel] [PATCH 16/18] hw/pc.c: fix warnings with _FORTIFY_SOURCE, Blue Swirl, 2009/12/22
- Re: [Qemu-devel] [PATCH 14/18] vl.c: fix warning with _FORTIFY_SOURCE, Blue Swirl, 2009/12/22
- Re: [Qemu-devel] [PATCH 12/18] savevm.c: fix warning with _FORTIFY_SOURCE, Blue Swirl, 2009/12/22
- Re: [Qemu-devel] [PATCH 11/18] usb-linux.c: fix warning with _FORTIFY_SOURCE, Blue Swirl, 2009/12/22
- Re: [Qemu-devel] [PATCH 10/18] net/slirp.c: fix warning with _FORTIFY_SOURCE, Blue Swirl, 2009/12/22
- [Qemu-devel] Re: [PATCH 09/18] block/qcow2.c: fix warnings with _FORTIFY_SOURCE, Andreas Schwab, 2009/12/20
- Re: [Qemu-devel] [PATCH 08/18] block/vvfat.c: fix warnings with _FORTIFY_SOURCE, Kevin Wolf, 2009/12/20
- Re: [Qemu-devel] [PATCH 07/18] block/bochs.c: fix warning with _FORTIFY_SOURCE, Blue Swirl, 2009/12/22
- Re: [Qemu-devel] [PATCH 03/18] posix-aio-compat.c: fix warning with _FORTIFY_SOURCE, Paul Brook, 2009/12/20
- Re: [Qemu-devel] [PATCH 02/18] block.c: fix warning with _FORTIFY_SOURCE,
Blue Swirl <=
- Re: [Qemu-devel] [PATCH 01/18] Do not disable _FORTIFY_SOURCE, Blue Swirl, 2009/12/20