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| author | Nicolas George <nicolas.george@ens.fr> | 2007-09-19 09:46:21 +0400 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-09-19 22:24:17 +0400 |
| commit | 2c392a4f47f41b24432e6aa77bb5167d0bbb10c5 (patch) | |
| tree | 2b926ad86b52039789814f1d4174364bdd91d60f | |
| parent | 3558c9b3232b5f0fd9f32043a191eca20fca64c6 (diff) | |
| download | linux-2c392a4f47f41b24432e6aa77bb5167d0bbb10c5.tar.xz | |
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>
| -rw-r--r-- | arch/um/os-Linux/file.c | 3 |
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) } if(S_ISBLK(buf.ust_mode)){ - int fd, blocks; + int fd; + long blocks; fd = os_open_file(file, of_read(OPENFLAGS()), 0); if(fd < 0){ |