/* nommu.c: mmu-less memory info files * * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved. * Written by David Howells (dhowells@redhat.com) * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version * 2 of the License, or (at your option) any later version. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "internal.h" /* * display a single region to a sequenced file */ static int nommu_region_show(struct seq_file *m, struct vm_region *region) { unsigned long ino = 0; struct file *file; dev_t dev = 0; int flags; flags = region->vm_flags; file = region->vm_file; if (file) { struct inode *inode = file_inode(region->vm_file); dev = inode->i_sb->s_dev; ino = inode->i_ino; } seq_setwidth(m, 25 + sizeof(void *) * 6 - 1); seq_printf(m, "%08lx-%08lx %c%c%c%c %08llx %02x:%02x %lu ", region->vm_start, region->vm_end, flags & VM_READ ? 'r' : '-', flags & VM_WRITE ? 'w' : '-', flags & VM_EXEC ? 'x' : '-', flags & VM_MAYSHARE ? flags & VM_SHARED ? 'S' : 's' : 'p', ((loff_t)region->vm_pgoff) << PAGE_SHIFT, MAJOR(dev), MINOR(dev), ino); if (file) { seq_pad(m, ' '); seq_file_path(m, file, ""); } seq_putc(m, '\n'); return 0; } /* * display a list of all the REGIONs the kernel knows about * - nommu kernels have a single flat list */ static int nommu_region_list_show(struct seq_file *m, void *_p) { struct rb_node *p = _p; return nommu_region_show(m, rb_entry(p, struct vm_region, vm_rb)); } static void *nommu_region_list_start(struct seq_file *m, loff_t *_pos) { struct rb_node *p; loff_t pos = *_pos; down_read(&nommu_region_sem); for (p = rb_first(&nommu_region_tree); p; p = rb_next(p)) if (pos-- == 0) return p; return NULL; } static void nommu_region_list_stop(struct seq_file *m, void *v) { up_read(&nommu_region_sem); } static void *nommu_region_list_next(struct seq_file *m, void *v, loff_t *pos) { (*pos)++; return rb_next((struct rb_node *) v); } static const struct seq_operations proc_nommu_region_list_seqop = { .start = nommu_region_list_start, .next = nommu_region_list_next, .stop = nommu_region_list_stop, .show = nommu_region_list_show }; static int proc_nommu_region_list_open(struct inode *inode, struct file *file) { return seq_open(file, &proc_nommu_region_list_seqop); } static const struct file_operations proc_nommu_region_list_operations = { .open = proc_nommu_region_list_open, .read = seq_read, .llseek = seq_lseek, .release = seq_release, }; static int __init proc_nommu_init(void) { proc_create("maps", S_IRUGO, NULL, &proc_nommu_region_list_operations); return 0; } fs_initcall(proc_nommu_init); ption>space:mode:
authorDavid Lebrun <david.lebrun@uclouvain.be>2017-02-02 11:29:38 +0100
committerDavid S. Miller <davem@davemloft.net>2017-02-03 11:05:23 -0500
commit013e8167899d389075160412a8c0c5e0581e1f13 (patch)
treed281ac584151c7116a7dfa29cfb4565d1d491e4e /net/ipv6
parentcafe8df8b9bc9aa3dffa827c1a6757c6cd36f657 (diff)
ipv6: sr: remove cleanup flag and fix HMAC computation
In the latest version of the IPv6 Segment Routing IETF draft [1] the cleanup flag is removed and the flags field length is shrunk from 16 bits to 8 bits. As a consequence, the input of the HMAC computation is modified in a non-backward compatible way by covering the whole octet of flags instead of only the cleanup bit. As such, if an implementation compatible with the latest draft computes the HMAC of an SRH who has other flags set to 1, then the HMAC result would differ from the current implementation. This patch carries those modifications to prevent conflict with other implementations of IPv6 SR. [1] https://tools.ietf.org/html/draft-ietf-6man-segment-routing-header-05 Signed-off-by: David Lebrun <david.lebrun@uclouvain.be> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6')
-rw-r--r--net/ipv6/exthdrs.c31
-rw-r--r--net/ipv6/seg6_hmac.c8
2 files changed, 7 insertions, 32 deletions
diff --git a/net/ipv6/exthdrs.c b/net/ipv6/exthdrs.c