lgcosta
5323ee2c71
- pfk_hooks: PRE→PF_IN, LOCAL_OUT/POST→PF_OUT v4+v6; replacement/buffer handling with NF_STOLEN + re-injection (documented divergence: re-entry) - pfk_mod: pf_status_init/pfattach + pfi attach via pfk_if event callback - pfk_kern: NET_LOCK holder reentrancy (fix deadlock when notifier fires under the write lock — observed as full-VM network hang) - tools: static pfctl link for musl VMs
53 lines
1.1 KiB
C
53 lines
1.1 KiB
C
/* PFLINUX: BSD strtonum(3) for glibc — follows OpenBSD
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* lib/libc/stdlib/strtonum.c semantics (public domain).
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* Declared in tools/include/pflinux_compat.h. */
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#include <sys/types.h>
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#include <errno.h>
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#include <inttypes.h>
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#include <stdlib.h>
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#define INVALID 1
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#define TOO_SMALL 2
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#define TOO_LARGE 3
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long long
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strtonum(const char *numstr, long long minval, long long maxval,
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const char **errstrp)
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{
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long long ll = 0;
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int error = 0;
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struct errval {
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const char *errstr;
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int err;
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} ev[4] = {
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{ NULL, 0 },
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{ "invalid", EINVAL },
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{ "too small", ERANGE },
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{ "too large", ERANGE },
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};
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ev[0].err = errno;
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errno = 0;
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if (minval > maxval) {
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error = INVALID;
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} else {
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char *str;
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ll = strtoll(numstr, &str, 10);
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if (numstr == str || str == NULL || *str != '\0')
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error = INVALID;
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else if ((errno == ERANGE && ll < minval) || ll < minval)
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error = TOO_SMALL;
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else if ((errno == ERANGE && ll > maxval) || ll > maxval)
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error = TOO_LARGE;
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}
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if (errstrp != NULL)
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*errstrp = ev[error].errstr;
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errno = ev[error].err;
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if (error)
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ll = 0;
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return (ll);
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}
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