fix some bugs in setxid and update setrlimit to use __synccall

[musl] / src / misc / setrlimit.c

diff --git a/src/misc/setrlimit.c b/src/misc/setrlimit.c
index 68bd9d7..bf03fe6 100644 (file)
--- a/src/misc/setrlimit.c
+++ b/src/misc/setrlimit.c
@@ -1,11 +1,36 @@
 #include <sys/resource.h>
+#include <errno.h>
 #include "syscall.h"
 #include "libc.h"
 
-int setrlimit(int resource, const struct rlimit *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);
+       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) return;
+       c->err = -__setrlimit(c->res, c->rlim);
+}
+
+int setrlimit(int resource, const struct rlimit *rlim)
+{
+       struct ctx c = { .res = resource, .rlim = rlim };
+       __synccall(do_setrlimit, &c);
+       if (c.err) {
+               errno = c.err;
+               return -1;
+       }
+       return 0;
 }
 
 LFS64(setrlimit);