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| author | Karel Zak | 2013-08-06 11:04:35 +0200 |
|---|---|---|
| committer | Karel Zak | 2013-08-06 11:04:35 +0200 |
| commit | 3cb2413b02ff01f535b82eb630bd4f157ed7b1c8 (patch) | |
| tree | 36e3c1b83da117dce3be08eac039a1d0e2387a00 /sys-utils/losetup.c | |
| parent | blkdiscard: use fstat() rather than stat() [coverity scan] (diff) | |
| download | kernel-qcow2-util-linux-3cb2413b02ff01f535b82eb630bd4f157ed7b1c8.tar.gz kernel-qcow2-util-linux-3cb2413b02ff01f535b82eb630bd4f157ed7b1c8.tar.xz kernel-qcow2-util-linux-3cb2413b02ff01f535b82eb630bd4f157ed7b1c8.zip | |
losetup: use loop-control to explicitly ask for device
Now we use LOOP_CTL_GET_FREE ioctl to ask for free device, for example
losetup -f foo.img
Unfortunately, losetup(8) allows to ask for specified device
losetup /dev/loop100 foo.img
and in this case we assume that the device already exists in the
system. This is incorrect, we should be able to use loop-control
LOOP_CTL_ADD ioctl to ask for the specified device.
Signed-off-by: Karel Zak <kzak@redhat.com>
Diffstat (limited to 'sys-utils/losetup.c')
| -rw-r--r-- | sys-utils/losetup.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/sys-utils/losetup.c b/sys-utils/losetup.c index c1166b039..234a15b0c 100644 --- a/sys-utils/losetup.c +++ b/sys-utils/losetup.c @@ -641,6 +641,8 @@ int main(int argc, char **argv) { int hasdev = loopcxt_has_device(&lc); + if (hasdev && !is_loopdev(loopcxt_get_device(&lc))) + loopcxt_add_device(&lc); do { const char *errpre; |