Subject: mbr: MBR fails when opening large files
Package: mbr
Version: 1.1.9-2
Severity: important
*** Please type your report below this line ***
When attempting to use install-mbr to install mbr into a large file,
it fails. As it only needs to write the first 512 bytes, this seems
rather unneccesary. Should it be compiled with -D_LARGE_FILES?
zsh > ls -lh test.hd
-rw-r--r-- 1 mariw mariw 4.0G 2007-04-08 23:41 test.hd
zsh > /sbin/install-mbr test.hd
install-mbr: Failed to open test.hd: File too large
zsh > strace /sbin/install-mbr test.hd
execve("/sbin/install-mbr", ["/sbin/install-mbr", "test.hd"], [/* 31 vars */])
= 0
uname({sys="Linux", node="frost", ...}) = 0
brk(0) = 0x804d000
access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or directory)
mmap2(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0xb7f0e000
access("/etc/ld.so.preload", R_OK) = -1 ENOENT (No such file or directory)
open("/etc/ld.so.cache", O_RDONLY) = 3
fstat64(3, {st_mode=S_IFREG|0644, st_size=73762, ...}) = 0
mmap2(NULL, 73762, PROT_READ, MAP_PRIVATE, 3, 0) = 0xb7efb000
close(3) = 0
access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or directory)
open("/lib/tls/i686/cmov/libc.so.6", O_RDONLY) = 3
read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0\240O\1"..., 512) = 512
fstat64(3, {st_mode=S_IFREG|0644, st_size=1241392, ...}) = 0
mmap2(NULL, 1247388, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) =
0xb7dca000
mmap2(0xb7ef1000, 28672, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x127) = 0xb7ef1000
mmap2(0xb7ef8000, 10396, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0xb7ef8000
close(3) = 0
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0xb7dc9000
mprotect(0xb7ef1000, 20480, PROT_READ) = 0
set_thread_area({entry_number:-1 -> 6, base_addr:0xb7dc98e0, limit:1048575,
seg_32bit:1, contents:0, read_exec_only:0, limit_in_pages:1, seg_not_present:0,
useable:1}) = 0
munmap(0xb7efb000, 73762) = 0
open("test.hd", O_RDWR|O_NOCTTY) = -1 EFBIG (File too large)
write(2, "install-mbr: Failed to open test"..., 52install-mbr: Failed to open
test.hd: File too large
) = 52
exit_group(1) = ?
Process 15834 detached
-- System Information:
Debian Release: 4.0
APT prefers testing
APT policy: (500, 'testing'), (500, 'stable')
Architecture: i386 (i686)
Shell: /bin/sh linked to /bin/bash
Kernel: Linux 2.6.18-4-686
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Versions of packages mbr depends on:
ii libc6 2.3.6.ds1-13 GNU C Library: Shared libraries
mbr recommends no packages.
-- no debconf information
--
Mari Wang
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