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-rw-r--r--include/sys/resource.h18
-rw-r--r--libc/sysdeps/linux/common/prlimit.c9
2 files changed, 21 insertions, 6 deletions
diff --git a/include/sys/resource.h b/include/sys/resource.h
index e9fac2c65..a5c69d84e 100644
--- a/include/sys/resource.h
+++ b/include/sys/resource.h
@@ -103,13 +103,25 @@ libc_hidden_proto(setpriority)
#ifdef __USE_GNU
/* Modify and return resource limits of a process atomically. */
+# ifndef __USE_FILE_OFFSET64
extern int prlimit (__pid_t __pid, enum __rlimit_resource __resource,
- const struct rlimit *__new_limit,
- struct rlimit *__old_limit) __THROW;
-
+ const struct rlimit *__new_limit,
+ struct rlimit *__old_limit) __THROW;
+# else
+# ifdef __REDIRECT_NTH
+extern int __REDIRECT_NTH (prlimit, (__pid_t __pid,
+ enum __rlimit_resource __resource,
+ const struct rlimit *__new_limit,
+ struct rlimit *__old_limit), prlimit64);
+# else
+# define prlimit prlimit64
+# endif
+# endif
+# ifdef __USE_LARGEFILE64
extern int prlimit64 (__pid_t __pid, enum __rlimit_resource __resource,
const struct rlimit64 *__new_limit,
struct rlimit64 *__old_limit) __THROW;
+# endif
#endif
__END_DECLS
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;
}
}