diff options
| author | Yann Sionneau <ysionneau@kalray.eu> | 2023-09-14 16:29:40 +0200 |
|---|---|---|
| committer | Waldemar Brodkorb <wbx@openadk.org> | 2023-09-14 16:46:52 +0200 |
| commit | 95e38b378480b7935238b8b2b2712f76211f4fea (patch) | |
| tree | 3439f4edd552cce1600896b9211c99cd23e6cb9f /libc/sysdeps/linux/common/getrlimit.c | |
| parent | dd21bfd5a7fc87e6dd163745ce15ac2b77439428 (diff) | |
add support for systems without legacy setrlimit/getrlimit syscalls
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>
Diffstat (limited to 'libc/sysdeps/linux/common/getrlimit.c')
| -rw-r--r-- | libc/sysdeps/linux/common/getrlimit.c | 23 |
1 files changed, 19 insertions, 4 deletions
diff --git a/libc/sysdeps/linux/common/getrlimit.c b/libc/sysdeps/linux/common/getrlimit.c index 26d3d2946..ad3f4a0e4 100644 --- a/libc/sysdeps/linux/common/getrlimit.c +++ b/libc/sysdeps/linux/common/getrlimit.c @@ -9,10 +9,11 @@ #include <sys/syscall.h> #include <sys/resource.h> #include <bits/wordsize.h> +#include <stddef.h> // needed for NULL to be defined /* Only wrap getrlimit if the new ugetrlimit is not present and getrlimit sucks */ -#if defined __NR_ugetrlimit +#if defined(__NR_ugetrlimit) /* just call ugetrlimit() */ # define __NR___syscall_ugetrlimit __NR_ugetrlimit @@ -24,16 +25,25 @@ int getrlimit(__rlimit_resource_t resource, struct rlimit *rlimits) return __syscall_ugetrlimit(resource, rlimits); } -#elif !defined(__UCLIBC_HANDLE_OLDER_RLIMIT__) +#else + +# if !defined(__UCLIBC_HANDLE_OLDER_RLIMIT__) +# if defined(__NR_prlimit64) +int getrlimit(__rlimit_resource_t resource, struct rlimit *rlimits) +{ + return INLINE_SYSCALL (prlimit64, 4, 0, resource, NULL, rlimits); +} +# else /* We don't need to wrap getrlimit() */ _syscall2(int, getrlimit, __rlimit_resource_t, resource, struct rlimit *, rlim) +# endif -#else +# else /* we have to handle old style getrlimit() */ -# define __NR___syscall_getrlimit __NR_getrlimit +# define __NR___syscall_getrlimit __NR_getrlimit static __always_inline _syscall2(int, __syscall_getrlimit, int, resource, struct rlimit *, rlim) @@ -41,7 +51,11 @@ int getrlimit(__rlimit_resource_t resource, struct rlimit *rlimits) { int result; +# if defined(__NR_prlimit64) + result = INLINE_SYSCALL (prlimit64, 4, 0, resource, NULL, rlimits); +# else result = __syscall_getrlimit(resource, rlimits); +# endif if (result == -1) return result; @@ -54,6 +68,7 @@ int getrlimit(__rlimit_resource_t resource, struct rlimit *rlimits) rlimits->rlim_max = RLIM_INFINITY; return result; } +# endif #endif libc_hidden_def(getrlimit) |