mallocng/aligned_alloc: check for malloc failure

[musl] / src / misc / setrlimit.c

diff --git a/src/misc/setrlimit.c b/src/misc/setrlimit.c
index 7fdfc4e..8340aee 100644 (file)
--- a/src/misc/setrlimit.c
+++ b/src/misc/setrlimit.c
@@ -1,11 +1,47 @@
 #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)
+
+struct ctx {
+       unsigned long lim[2];
+       int res;
+       int err;
+};
+
+static void do_setrlimit(void *p)
+{
+       struct ctx *c = p;
+       if (c->err>0) return;
+       c->err = -__syscall(SYS_setrlimit, c->res, c->lim);
+}
+
 int setrlimit(int resource, const struct rlimit *rlim)
 {
-       long k_rlim[2] = { rlim->rlim_cur, rlim->rlim_max };
-       return syscall2(__NR_setrlimit, resource, (long)k_rlim);
+       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 __syscall_ret(ret);
+
+       struct ctx c = {
+               .lim[0] = MIN(rlim->rlim_cur, MIN(-1UL, SYSCALL_RLIM_INFINITY)),
+               .lim[1] = MIN(rlim->rlim_max, MIN(-1UL, SYSCALL_RLIM_INFINITY)),
+               .res = resource, .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);