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| | #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;
};
#ifdef SYS_setrlimit
static void do_setrlimit(void *p)
{
struct ctx *c = p;
if (c->err>0) return;
c->err = -__syscall(SYS_setrlimit, c->res, c->lim);
}
#endif
int setrlimit(int resource, const struct rlimit *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);
#ifdef SYS_setrlimit
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;
#else
return __syscall_ret(ret);
#endif
}
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