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authorPavel Kozlov <pavel.kozlov@synopsys.com>2023-11-07 15:03:12 +0400
committerWaldemar Brodkorb <wbx@openadk.org>2023-11-10 16:13:19 +0100
commit4bf3912213ed8d0fa937fb4784a3e8e0c8fd8c3c (patch)
treeda9fff79f12236fdb6b21fdd92a0d07945713071 /libc/sysdeps/linux
parentc303df56d32faa47ef163726357ed3ee5d075b88 (diff)
prlimit: add name redirection and fix incorrect parameters to syscall
The tst-rlimit/tst-rlimit64 tests pointed to several issueses in prlimit() function for 32-bit CPUs. This patch adds name redirection to prlimit64 in prlimit declaration to provide correct support for 64-bit offset (_FILE_OFFSET_BITS=64) on 32-bit CPUs and fixes improper field assignment and incorrect syscall paramerets in the prlimit() function. Fixes: 8c2f6218 ("setrlimit/getrlimit: fix prlimit64 syscall use for 32-bit CPUs") Signed-off-by: Pavel Kozlov <pavel.kozlov@synopsys.com>
Diffstat (limited to 'libc/sysdeps/linux')
-rw-r--r--libc/sysdeps/linux/common/prlimit.c9
1 files changed, 6 insertions, 3 deletions
diff --git a/libc/sysdeps/linux/common/prlimit.c b/libc/sysdeps/linux/common/prlimit.c
index f59ade3a3..81c0f4619 100644
--- a/libc/sysdeps/linux/common/prlimit.c
+++ b/libc/sysdeps/linux/common/prlimit.c
@@ -25,7 +25,9 @@ prlimit (__pid_t pid, enum __rlimit_resource resource,
const struct rlimit *new_rlimit, struct rlimit *old_rlimit)
{
struct rlimit64 new_rlimit64;
+ struct rlimit64 *new_rlimit64_ptr = NULL;
struct rlimit64 old_rlimit64;
+ struct rlimit64 *old_rlimit64_ptr = (old_rlimit != NULL ? &old_rlimit64 : NULL);
int res;
if (new_rlimit != NULL) {
@@ -37,10 +39,11 @@ prlimit (__pid_t pid, enum __rlimit_resource resource,
new_rlimit64.rlim_max = RLIM64_INFINITY;
else
new_rlimit64.rlim_max = new_rlimit->rlim_max;
+ new_rlimit64_ptr = &new_rlimit64;
}
- res = INLINE_SYSCALL (prlimit64, 4, pid, resource, &new_rlimit64,
- &old_rlimit64);
+ res = INLINE_SYSCALL (prlimit64, 4, pid, resource, new_rlimit64_ptr,
+ old_rlimit64_ptr);
if (res == 0 && old_rlimit != NULL) {
/* If the syscall succeeds but the values do not fit into a
@@ -64,7 +67,7 @@ prlimit (__pid_t pid, enum __rlimit_resource resource,
__set_errno(EOVERFLOW);
return -1;
}
- old_rlimit->rlim_cur = RLIM_INFINITY;
+ old_rlimit->rlim_max = RLIM_INFINITY;
}
}