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https://git.proxmox.com/git/mirror_frr
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acddc0ed3c
Done with a combination of regex'ing and banging my head against a wall. Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
131 lines
2.2 KiB
C
131 lines
2.2 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Network library.
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* Copyright (C) 1997 Kunihiro Ishiguro
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*/
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#include <zebra.h>
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#include "log.h"
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#include "network.h"
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#include "lib_errors.h"
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/* Read nbytes from fd and store into ptr. */
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int readn(int fd, uint8_t *ptr, int nbytes)
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{
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int nleft;
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int nread;
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nleft = nbytes;
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while (nleft > 0) {
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nread = read(fd, ptr, nleft);
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if (nread < 0)
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return (nread);
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else if (nread == 0)
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break;
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nleft -= nread;
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ptr += nread;
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}
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return nbytes - nleft;
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}
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/* Write nbytes from ptr to fd. */
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int writen(int fd, const uint8_t *ptr, int nbytes)
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{
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int nleft;
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int nwritten;
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nleft = nbytes;
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while (nleft > 0) {
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nwritten = write(fd, ptr, nleft);
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if (nwritten < 0) {
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if (!ERRNO_IO_RETRY(errno))
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return nwritten;
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}
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if (nwritten == 0)
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return (nwritten);
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nleft -= nwritten;
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ptr += nwritten;
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}
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return nbytes - nleft;
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}
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int set_nonblocking(int fd)
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{
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int flags;
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/* According to the Single UNIX Spec, the return value for F_GETFL
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should
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never be negative. */
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flags = fcntl(fd, F_GETFL);
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if (flags < 0) {
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flog_err(EC_LIB_SYSTEM_CALL,
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"fcntl(F_GETFL) failed for fd %d: %s", fd,
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safe_strerror(errno));
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return -1;
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}
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if (fcntl(fd, F_SETFL, (flags | O_NONBLOCK)) < 0) {
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flog_err(EC_LIB_SYSTEM_CALL,
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"fcntl failed setting fd %d non-blocking: %s", fd,
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safe_strerror(errno));
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return -1;
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}
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return 0;
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}
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int set_cloexec(int fd)
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{
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int flags;
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flags = fcntl(fd, F_GETFD, 0);
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if (flags == -1)
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return -1;
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flags |= FD_CLOEXEC;
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if (fcntl(fd, F_SETFD, flags) == -1)
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return -1;
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return 0;
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}
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float htonf(float host)
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{
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uint32_t lu1, lu2;
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float convert;
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memcpy(&lu1, &host, sizeof(uint32_t));
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lu2 = htonl(lu1);
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memcpy(&convert, &lu2, sizeof(uint32_t));
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return convert;
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}
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float ntohf(float net)
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{
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return htonf(net);
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}
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uint64_t frr_sequence_next(void)
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{
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static uint64_t last_sequence;
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struct timespec ts;
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(void)clock_gettime(CLOCK_MONOTONIC, &ts);
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if (last_sequence == (uint64_t)ts.tv_sec) {
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last_sequence++;
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return last_sequence;
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}
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last_sequence = ts.tv_sec;
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return last_sequence;
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}
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uint32_t frr_sequence32_next(void)
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{
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/* coverity[Y2K38_SAFETY] */
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return (uint32_t)frr_sequence_next();
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}
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