[Cluster-devel] [PATCH RHEL5] mkfs: Handle gfs2 creation on regular files
Steven Whitehouse
swhiteho at redhat.com
Wed Aug 10 15:34:14 UTC 2011
Hi,
Looks good to me. ACK,
Steve.
On Wed, 2011-08-10 at 16:28 +0100, Andrew Price wrote:
> mkfs.gfs2 previously exited if the target volume was a regular file.
> This patch allows creation of gfs2 file systems on regular files by
> removing an exiting check. It also removes the check_mount() function and
> replaces it with an fstat() call after opening the file to avoid races.
>
> This patch is based on commit 9e213f6 upstream.
>
> rhbz#720935
>
> Signed-off-by: Andrew Price <anprice at redhat.com>
> ---
> gfs2/mkfs/main_mkfs.c | 39 +++++++--------------------------------
> 1 files changed, 7 insertions(+), 32 deletions(-)
>
> diff --git a/gfs2/mkfs/main_mkfs.c b/gfs2/mkfs/main_mkfs.c
> index 80126d1..35d10ea 100644
> --- a/gfs2/mkfs/main_mkfs.c
> +++ b/gfs2/mkfs/main_mkfs.c
> @@ -295,36 +295,6 @@ static void are_you_sure(struct gfs2_sbd *sdp)
> }
>
> /**
> - * check_mount - check to see if device is mounted/busy
> - * @device: the device to create the filesystem on
> - *
> - */
> -
> -static void check_mount(char *device)
> -{
> - struct stat st_buf;
> - int fd;
> -
> - if (stat(device, &st_buf) < 0)
> - die( _("could not stat device %s\n"), device);
> - if (!S_ISBLK(st_buf.st_mode))
> - die( _("%s is not a block device\n"), device);
> -
> - fd = open(device, O_RDONLY | O_NONBLOCK | O_EXCL);
> -
> - if (fd < 0) {
> - if (errno == EBUSY) {
> - die( _("device %s is busy\n"), device);
> - }
> - }
> - else {
> - close(fd);
> - }
> -
> - return;
> -}
> -
> -/**
> * print_results - print out summary information
> * @sdp: the command line
> *
> @@ -381,6 +351,7 @@ main_mkfs(int argc, char *argv[])
> int rgsize_specified = 0;
> uint64_t real_device_size;
> unsigned char uuid[16];
> + struct stat st_buf;
>
> memset(sdp, 0, sizeof(struct gfs2_sbd));
> sdp->bsize = GFS2_DEFAULT_BSIZE;
> @@ -400,13 +371,17 @@ main_mkfs(int argc, char *argv[])
>
> verify_arguments(sdp);
>
> - check_mount(sdp->device_name);
> -
> sdp->device_fd = open(sdp->device_name, O_RDWR);
> if (sdp->device_fd < 0)
> die( _("can't open device %s: %s\n"),
> sdp->device_name, strerror(errno));
>
> + if (fstat(sdp->device_fd, &st_buf) < 0) {
> + fprintf(stderr, _("could not fstat fd %d: %s\n"),
> + sdp->device_fd, strerror(errno));
> + exit(-1);
> + }
> +
> if (!sdp->override)
> are_you_sure(sdp);
>
More information about the Cluster-devel
mailing list