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authorPavel Kozlov <pavel.kozlov@synopsys.com>2023-11-17 12:57:31 +0400
committerWaldemar Brodkorb <wbx@openadk.org>2023-11-17 10:02:56 +0100
commitd2c58318e70eaac636e83e718e389603dde85eac (patch)
tree4e314a963d4c6afbb2e414a75c5c7fa1057dc011 /libc/sysdeps/linux/alpha/bits/resource.h
parentbfd61a8043511696de226e647951d09deaa95689 (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.h6
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. */