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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)) int __setrlimit(int resource, const struct rlimit *rlim) { unsigned long k_rlim[2]; int ret = __syscall(SYS_prlimit64, 0, resource, rlim, 0); if (ret != -ENOSYS) return ret; k_rlim[0] = MIN(rlim->rlim_cur, -1UL); k_rlim[1] = MIN(rlim->rlim_max, -1UL); 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); |