Any news about this issue? It really starts to causes a lot of issues in Debian. I have added a Cc: to libc people so that we can also hear their opinion. Thanks, Aurelien On Fri, Jun 28, 2013 at 03:38:35PM +0200, Aurelien Jarno wrote: > Hi, > > There is an inconsistency in the definition of RLIM64_INFINITY between > kernel and userland for the O32 and N32 ABI: > > On the kernel side, the value is defined for all architectures as > include/uapi/linux/resource.h: > > | #define RLIM64_INFINITY (~0ULL) > > On the GNU libc side, the value is defined in > ports/sysdeps/unix/sysv/linux/mips/bits/resource.h: > > For the O32 and N32 ABI: > > | # define RLIM64_INFINITY 0x7fffffffffffffffULL > > and for the N64 ABI: > > | # define RLIM64_INFINITY 0xffffffffffffffffUL > > This was not a problem until the prlimit64 syscall was wired in the > 2.6.36 kernel. Since then, on a 64-bit kernel and an O32 or N32 > userland, but not on a 32-bit kernel, this causes some issues for > example it's not possible to set "ulimit -c unlimited" using dash as a > non-priviledged user. > > This is due to the fact that when available the glibc uses the prlimit64 > syscall to implement setrlimit64, which is called from called from > pam_limits.so. Instead of setting the limit to infinity (according to > the userland), it is set to a very big value but still lower than > infinity (according to the kernel). When later the setrlimit syscall is > used to set the value to infinity, it gets an EPERM value as the kernel > consider that as an increase of the limit (from a big value to > infinity). > > I don't know where the issue should be fixed. The GNU libc has this > value for more than 7 years, and as it is defined in a header file, it > means a lot of binaries are broken when used with a 2.6.36+ kernel. > Fixing that on the kernel side means that MIPS would have a different > value than other architectures. > > How do you think the issue should be fixed? > > Regards, > Aurelien > > -- > Aurelien Jarno GPG: 1024D/F1BCDB73 > aurelien@xxxxxxxxxxx http://www.aurel32.net -- Aurelien Jarno GPG: 1024D/F1BCDB73 aurelien@xxxxxxxxxxx http://www.aurel32.net
Attachment:
signature.asc
Description: Digital signature
