/* * netsniff-ng - the packet sniffing beast * Copyright 2009 - 2013 Daniel Borkmann. * Subject to the GPL, version 2. */ #include #include #include #include #include #include #include "pcap_io.h" #include "built_in.h" #include "die.h" #include "iosched.h" #include "ioops.h" static ssize_t pcap_rw_write(int fd, pcap_pkthdr_t *phdr, enum pcap_type type, const uint8_t *packet, size_t len) { ssize_t ret, hdrsize = pcap_get_hdr_length(phdr, type), hdrlen = 0; ret = write_or_die(fd, &phdr->raw, hdrsize); if (unlikely(ret != hdrsize)) panic("Failed to write pkt header!\n"); hdrlen = pcap_get_length(phdr, type); if (unlikely(hdrlen != (ssize_t) len)) return -EINVAL; ret = write_or_die(fd, packet, hdrlen); if (unlikely(ret != hdrlen)) panic("Failed to write pkt payload!\n"); return hdrsize + hdrlen; } static ssize_t pcap_rw_read(int fd, pcap_pkthdr_t *phdr, enum pcap_type type, uint8_t *packet, size_t len) { ssize_t ret, hdrsize = pcap_get_hdr_length(phdr, type), hdrlen = 0; ret = read_or_die(fd, &phdr->raw, hdrsize); if (unlikely(ret != hdrsize)) return -EIO; hdrlen = pcap_get_length(phdr, type); if (unlikely(hdrlen == 0 || hdrlen > (ssize_t) len)) return -EINVAL; ret = read(fd, packet, hdrlen); if (unlikely(ret != hdrlen)) return -EIO; return hdrsize + hdrlen; } static void pcap_rw_init_once(bool enforce_prio) { if (enforce_prio) set_ioprio_rt(); } static void pcap_rw_fsync(int fd) { fdatasync(fd); } const struct pcap_file_ops pcap_rw_ops = { .init_once_pcap = pcap_rw_init_once, .pull_fhdr_pcap = pcap_generic_pull_fhdr, .push_fhdr_pcap = pcap_generic_push_fhdr, .read_pcap = pcap_rw_read, .write_pcap = pcap_rw_write, .fsync_pcap = pcap_rw_fsync, }; g/net/dsa/dsa_priv.h?h=nds-private-remove'>logtreecommitdiff
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authorLinus Torvalds <torvalds@linux-foundation.org>2017-02-08 09:56:15 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2017-02-08 09:56:15 -0800
commit23fbe2cdc1de80120cf9ccd478ac57c3a3a0764b (patch)
tree4aff32d5f2f6fe2f54028bfd4d1b66fdd2f8d281 /net/dsa/dsa_priv.h
parent926af6273fc683cd98cd0ce7bf0d04a02eed6742 (diff)
parenteeeefd41843218c55a8782a6920f044d9bf6207a (diff)
Merge branch 'for-linus' of git://git.kernel.dk/linux-block
Pull block fix from Jens Axboe: "A single fix that should go into 4.10, fixing a regression on some devices with the WRITE_SAME command" * 'for-linus' of git://git.kernel.dk/linux-block: block: don't try Write Same from __blkdev_issue_zeroout
Diffstat (limited to 'net/dsa/dsa_priv.h')