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path: root/src/misc/getrlimit.c
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2014-05-30fix for broken kernel side RLIM_INFINITY on mipsSzabolcs Nagy-0/+8
On 32 bit mips the kernel uses -1UL/2 to mark RLIM_INFINITY (and this is the definition in the userspace api), but since it is in the middle of the valid range of limits and limits are often compared with relational operators, various kernel side logic is broken if larger than -1UL/2 limits are used. So we truncate the limits to -1UL/2 in get/setrlimit and prlimit. Even if the kernel side logic consistently treated -1UL/2 as greater than any other limit value, there wouldn't be any clean workaround that allowed using large limits: * using -1UL/2 as RLIM_INFINITY in userspace would mean different infinity value for get/setrlimt and prlimit (where infinity is always -1ULL) and userspace logic could break easily (just like the kernel is broken now) and more special case code would be needed for mips. * translating -1UL/2 kernel side value to -1ULL in userspace would mean that -1UL/2 limit cannot be set (eg. -1UL/2+1 had to be passed to the kernel instead).
2012-01-20use prlimit syscall for getrlimit/setrlimitRich Felker-3/+7
this allows the full range of 64-bit limit arguments even on 32-bit systems. fallback to the old syscalls on old kernels that don't support prlimit.
2011-03-20global cleanup to use the new syscall interfaceRich Felker-1/+1
2011-02-15fix getrlimit handling on 32-bit systems, and ease porting to 64-bitRich Felker-3/+3
2011-02-12initial check-in, version 0.5.0v0.5.0Rich Felker-0/+15