path: root/arch
diff options
authorNicolas George <nicolas.george@ens.fr>2007-09-18 22:46:21 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-09-19 11:24:17 -0700
commit2c392a4f47f41b24432e6aa77bb5167d0bbb10c5 (patch)
tree2b926ad86b52039789814f1d4174364bdd91d60f /arch
parent3558c9b3232b5f0fd9f32043a191eca20fca64c6 (diff)
uml: use correct type in BLKGETSIZE ioctl
I found a type mismatch in UML that makes host block devices unusable as ubd devices on x86_64 and other 64 bits systems (segfault of the mm subsystem): In block/ioctl.c, the following lines show that the BLKGETSIZE ioctl expects a pointer to a long: case BLKGETSIZE: if ((bdev->bd_inode->i_size >> 9) > ~0UL) return -EFBIG; return put_ulong(arg, bdev->bd_inode->i_size >> 9); In arch/um/os-Linux/file.c, os_file_size calls it with an int. The ioctl_list man page should be fixed as well. Cc: Jeff Dike <jdike@addtoit.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch')
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/um/os-Linux/file.c b/arch/um/os-Linux/file.c
index 6f92f732d253..c3ecc2a84e0c 100644
--- a/arch/um/os-Linux/file.c
+++ b/arch/um/os-Linux/file.c
@@ -320,7 +320,8 @@ int os_file_size(char *file, unsigned long long *size_out)
- int fd, blocks;
+ int fd;
+ long blocks;
fd = os_open_file(file, of_read(OPENFLAGS()), 0);
if(fd < 0){