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Commit 95e38b37 ("add support for systems without legacy setrlimit/getrlimit
syscalls") has added use of the prlimit64 syscall in getrlimit and setrlimit
functions. This change causes memory corruption on getrlimit call for 32-bit
CPUs like ARC, as ARC doesn't have ugetrlimit syscall and uses prlimit64.
Also, setrlimit has been broken by prlimit64 call on 32-bit CPUs like, i386,
ARM, ARC.
For the prlimit64 syscall the kernel expects an rlimit struct with 64-bit fields,
but on 32-bit CPUs without _FILE_OFFSET_BITS=64 the struct rlimit has 32-bit
fields.
Add safe implementations of getrlimit, setrlimit, prlimit for 32-bit CPUs with a
local struct rlimit64 variable for use in the prlimit64 syscall.
For 64-bit CPUs and configurations with _FILE_OFFSET_BITS=64 use
getrlimit, setrlimit, prlimit as aliases to getrlimit64, setrlimit64 and
prlimit64. Add a new function prlimit64.
Tested on aarch64, arm, i386, arc.
Fixes: 95e38b37 ("add support for systems without legacy setrlimit/getrlimit syscalls")
Signed-off-by: Pavel Kozlov <pavel.kozlov@synopsys.com>
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Those must have the recent prlimit64 syscall which exists since
Linux 3.2.
This patch is necessary for non-legacy architectures that wish to remove
support for legacy setrlimit/getrlimit syscalls.
The non-legacy arch are those who opt-out via non defining
__ARCH_WANT_SET_GET_RLIMIT in their arch/xxx/include/uapi/asm/unistd.h
setrlimit and getrlimit are then emulated via the new prlimit64 syscall.
Signed-off-by: Yann Sionneau <ysionneau@kalray.eu>
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Use param.h instead of MIN.
Use stddef.h instead of offsetof.
Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
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Signed-off-by: Peter S. Mazinger <ps.m@gmx.net>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
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sed -i -e '/Experimentally off - /d' $(grep -rl "Experimentally off - " *)
sed -i -e '/^\/\*[[:space:]]*libc_hidden_proto(/d' $(grep -rl "libc_hidden_proto" *)
should be a nop
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
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Appears to build fine (several .configs tried)
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ldso and syscalls are __always_inline (the latter would need more cleanup)
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applications stop using _syscall#() and use syscall() instead. Cleanup
internal handling of syscall includes to use the correct header file.
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call, and dont bother with 64bit versions on 64bit hosts as the regular one works fine (should fix the setrlimit ltp tests)
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is a useless attempt
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missing headers, other jump relocs removed
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-Erik
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