48 lines
1.0 KiB
C
48 lines
1.0 KiB
C
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#include <sys/resource.h>
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#include <errno.h>
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#include "syscall.h"
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#include "libc.h"
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#define MIN(a, b) ((a)<(b) ? (a) : (b))
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#define FIX(x) do{ if ((x)>=SYSCALL_RLIM_INFINITY) (x)=RLIM_INFINITY; }while(0)
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struct ctx {
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unsigned long lim[2];
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int res;
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int err;
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};
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static void do_setrlimit(void *p)
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{
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struct ctx *c = p;
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if (c->err>0) return;
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c->err = -__syscall(SYS_setrlimit, c->res, c->lim);
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}
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int setrlimit(int resource, const struct rlimit *rlim)
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{
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struct rlimit tmp;
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if (SYSCALL_RLIM_INFINITY != RLIM_INFINITY) {
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tmp = *rlim;
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FIX(tmp.rlim_cur);
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FIX(tmp.rlim_max);
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rlim = &tmp;
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}
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int ret = __syscall(SYS_prlimit64, 0, resource, rlim, 0);
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if (ret != -ENOSYS) return __syscall_ret(ret);
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struct ctx c = {
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.lim[0] = MIN(rlim->rlim_cur, MIN(-1UL, SYSCALL_RLIM_INFINITY)),
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.lim[1] = MIN(rlim->rlim_max, MIN(-1UL, SYSCALL_RLIM_INFINITY)),
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.res = resource, .err = -1
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};
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__synccall(do_setrlimit, &c);
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if (c.err) {
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if (c.err>0) errno = c.err;
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return -1;
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}
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return 0;
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}
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weak_alias(setrlimit, setrlimit64);
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