diff options
| author | Pavel Kozlov <pavel.kozlov@synopsys.com> | 2023-11-17 12:57:31 +0400 |
|---|---|---|
| committer | Waldemar Brodkorb <wbx@openadk.org> | 2023-11-17 10:02:56 +0100 |
| commit | d2c58318e70eaac636e83e718e389603dde85eac (patch) | |
| tree | 4e314a963d4c6afbb2e414a75c5c7fa1057dc011 /libc/sysdeps/linux/alpha/bits/resource.h | |
| parent | bfd61a8043511696de226e647951d09deaa95689 (diff) | |
rlimit: fix 64-bit RLIM64_INFINITY macro
Linux kernel returns -1ULL as RLIM64_INFINITY for all cpus.
Fix RLIM64_INFINTIY and 64-bit variant of RLIM_INFINITY macro for
sparc, mips, alpha, as for these CPUs the library uses different
value than what the kernel sets and it can cause incorrect
RLIM64_INFINTY check.
Because alpha is a 64-bit arch, fix the RLIM_INFINITY macro twice
(the value should be the same with and without __USE_FILE_OFFSET64
definition) to match the prlimit64 syscall in the kernel.
Previous implementation of setrlimit/getrlimit functions didn't use
prlimit64 syscall and didn't receive RLIM64_INFINTIY from the kernel,
RLIM64_INFINTY macro was used by the library itself to mimic the
64-bit rlimit in the getrlimit64/setrlimit64 functions, that allowed
to have RLIM64_INFINTIY different from what the kernel sets.
New implementation of setrlimit/getrlimit uses prlimit64 and checks
for RLIM64_INFINITY value and must have equal RLIM64_INFINITY
definition with what the kernel uses.
This issue is indicated by the tst-rlim/tst-rlim64 tests
on sparc/mips32/alpha, tests return 23 (UNSUPPORTED) because of
incorrect RLIM_INFINTY check for available rlimit type.
This patch will require rebuild of sparc/mips32/alpha binaries that
explicitly use RLIM64_INFINTY or 64-bit variant of RLIM_INFINITY
(if binary for 32-bit CPU was built with _FILE_OFFSET_BITS=64) to
update the macro value.
Signed-off-by: Pavel Kozlov <pavel.kozlov@synopsys.com>
Diffstat (limited to 'libc/sysdeps/linux/alpha/bits/resource.h')
| -rw-r--r-- | libc/sysdeps/linux/alpha/bits/resource.h | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/libc/sysdeps/linux/alpha/bits/resource.h b/libc/sysdeps/linux/alpha/bits/resource.h index 38f73961e..dba818714 100644 --- a/libc/sysdeps/linux/alpha/bits/resource.h +++ b/libc/sysdeps/linux/alpha/bits/resource.h @@ -113,13 +113,13 @@ enum __rlimit_resource /* Value to indicate that there is no limit. */ #ifndef __USE_FILE_OFFSET64 -# define RLIM_INFINITY ((long int)(~0UL >> 1)) +# define RLIM_INFINITY ((unsigned long int)(~0UL)) #else -# define RLIM_INFINITY 0x7fffffffffffffffLL +# define RLIM_INFINITY 0xffffffffffffffffULL #endif #ifdef __USE_LARGEFILE64 -# define RLIM64_INFINITY 0x7fffffffffffffffLL +# define RLIM64_INFINITY 0xffffffffffffffffULL #endif /* We can represent all limits. */ |