[Bug 3853] New: MIPS mmap can not access over 4G file
bugzilla at busybox.net
bugzilla at busybox.net
Tue Jun 14 04:43:46 UTC 2011
https://bugs.busybox.net/show_bug.cgi?id=3853
Summary: MIPS mmap can not access over 4G file
Product: uClibc
Version: <= 0.9.29.x
Platform: Other
OS/Version: Linux
Status: NEW
Severity: major
Priority: P5
Component: Standard Compliance
AssignedTo: unassigned at uclibc.org
ReportedBy: highfly22 at gmail.com
CC: uclibc-cvs at uclibc.org
Estimated Hours: 0.0
mmap use 32bit offset to access files. So over 4G file will not be accessed.
in libc/sysdeps/linux/mips/mmap.c, there is a code to disable mmap2.
It seems uclibc mips porting is incompleted.
#if 0
/* For now, leave mmap using mmap1 since mmap2 seems
* to have issues (i.e. it doesn't work 100% properly).
*/
#ifdef __NR_mmap2
# undef __NR_mmap
# define __NR_mmap __NR_mmap2
#endif
#endif
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