X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=src%2Fmisc%2Fsetrlimit.c;h=7a66ab29756b4a179a8077d7b4f50598b639e9da;hb=d88e5dfa8b989dafff4b748bfb3cba3512c8482e;hp=68bd9d749fc5954aacb12bbb675675f4662cc153;hpb=aa398f56fa398f2202b04e82c67f822f3233786f;p=musl

diff --git a/src/misc/setrlimit.c b/src/misc/setrlimit.c
index 68bd9d74..7a66ab29 100644
--- a/src/misc/setrlimit.c
+++ b/src/misc/setrlimit.c
@@ -1,11 +1,50 @@
 #include <sys/resource.h>
+#include <errno.h>
 #include "syscall.h"
 #include "libc.h"
 
+#define MIN(a, b) ((a)<(b) ? (a) : (b))
+#define FIX(x) do{ if ((x)>=SYSCALL_RLIM_INFINITY) (x)=RLIM_INFINITY; }while(0)
+
+static int __setrlimit(int resource, const struct rlimit *rlim)
+{
+	unsigned long k_rlim[2];
+	struct rlimit tmp;
+	if (SYSCALL_RLIM_INFINITY != RLIM_INFINITY) {
+		tmp = *rlim;
+		FIX(tmp.rlim_cur);
+		FIX(tmp.rlim_max);
+		rlim = &tmp;
+	}
+	int ret = __syscall(SYS_prlimit64, 0, resource, rlim, 0);
+	if (ret != -ENOSYS) return ret;
+	k_rlim[0] = MIN(rlim->rlim_cur, MIN(-1UL, SYSCALL_RLIM_INFINITY));
+	k_rlim[1] = MIN(rlim->rlim_max, MIN(-1UL, SYSCALL_RLIM_INFINITY));
+	return __syscall(SYS_setrlimit, resource, k_rlim);
+}
+
+struct ctx {
+	const struct rlimit *rlim;
+	int res;
+	int err;
+};
+
+static void do_setrlimit(void *p)
+{
+	struct ctx *c = p;
+	if (c->err>0) return;
+	c->err = -__setrlimit(c->res, c->rlim);
+}
+
 int setrlimit(int resource, const struct rlimit *rlim)
 {
-	long k_rlim[2] = { rlim->rlim_cur, rlim->rlim_max };
-	return syscall(SYS_setrlimit, resource, k_rlim);
+	struct ctx c = { .res = resource, .rlim = rlim, .err = -1 };
+	__synccall(do_setrlimit, &c);
+	if (c.err) {
+		if (c.err>0) errno = c.err;
+		return -1;
+	}
+	return 0;
 }
 
-LFS64(setrlimit);
+weak_alias(setrlimit, setrlimit64);