source: branches/stable/mindi-busybox/networking/libiproute/ll_map.c @ 1770

Last change on this file since 1770 was 1770, checked in by Bruno Cornec, 13 years ago
  • Better output for mindi-busybox revision
  • Remove dummy file created on NFS - report from Arnaud Tiger <arnaud.tiger_at_hp.com>
  • strace useful for debug
  • fix new versions for pb (2.0.0 for mindi and 1.7.2 for mindi-busybox)
  • fix build process for mindi-busybox + options used in that version (dd for label-partitions-as-necessary)
  • fix typo in label-partitions-as-necessary which doesn't seem to work
  • Update to busybox 1.7.2
  • perl is now required at restore time to support uuid swap partitions (and will be used for many other thigs

in the future for sure)

  • next mindi version will be 2.0.0 due to all the changes made in it (udev may break working distros)
  • small optimization in mindi on keyboard handling (one single find instead of multiple)
  • better interaction for USB device when launching mindi manually
  • attempt to automatically guess block disk size for ramdisk
  • fix typos in bkphw
  • Fix the remaining problem with UUID support for swap partitions
  • Updates mondoarchive man page for USB support
  • Adds preliminary Hardware support to mindi (Proliant SSSTK)
  • Tries to add udev support also for rhel4
  • Fix UUID support which was still broken.
  • Be conservative in test for the start-nfs script
  • Update config file for mindi-busybox for 1.7.2 migration
  • Try to run around a busybox bug (1.2.2 pb on inexistant links)
  • Add build content for mindi-busybox in pb
  • Remove distributions content for mindi-busybox
  • Fix a warning on inexistant raidtab
  • Solve problem on tmpfs in restore init (Problem of inexistant symlink and busybox)
  • Create MONDO_CACHE and use it everywhere + creation at start
  • Really never try to eject a USB device
  • Fix a issue with &> usage (replaced with 1> and 2>)
  • Adds magic file to depllist in order to have file working + ldd which helps for debugging issues
  • tty modes correct to avoid sh error messages
  • Use ext3 normally and not ext2 instead
  • USB device should be corrected after reading (take 1st part)
  • Adds a mount_USB_here function derived from mount_CDROM_here
  • usb detection place before /dev detection in device name at restore time
  • Fix when restoring from USB: media is asked in interactive mode
  • Adds USB support for mondorestore
  • mount_cdrom => mount_media
  • elilo.efi is now searched throughout /boot/efi and not in a fixed place as there is no standard
  • untar-and-softlink => untar (+ interface change)
  • suppress useless softlinks creation/removal in boot process
  • avoids udevd messages on groups
  • Increase # of disks to 99 as in mindi at restore time (should be a conf file parameter)
  • skip existing big file creation
  • seems to work correctly for USB mindi boot
  • Adds group and tty link to udev conf
  • Always load usb-torage (even 2.6) to initiate USB bus discovery
  • Better printing of messages
  • Attempt to fix a bug in supporting OpenSusE 10.3 kernel for initramfs (mindi may now use multiple regex for kernel initrd detection)
  • Links were not correctly done as non relative for modules in mindi
  • exclusion of modules denied now works
  • Also create modules in their ordinary place, so that classical modprobe works + copy modules.dep
  • Fix bugs for DENY_MODS handling
  • Add device /dev/console for udev
  • ide-generic should now really be excluded
  • Fix a bug in major number for tty
  • If udev then adds modprobe/insmod to rootfs
  • tty0 is also cretaed with udev
  • ide-generic put rather in DENY_MODS
  • udevd remove from deplist s handled in mindi directly
  • better default for mindi when using --usb
  • Handles dynamically linked busybox (in case we want to use it soon ;-)
  • Adds fixed devices to create for udev
  • ide-generic should not be part of the initrd when using libata v2
  • support a dynamically linked udev (case on Ubuntu 7.10 and Mandriva 2008.0 so should be quite generic) This will give incitation to move to dyn. linked binaries in the initrd which will help for other tasks (ia6 4)
  • Improvement in udev support (do not use cl options not available in busybox)
  • Udev in mindi
    • auto creation of the right links at boot time with udev-links.conf(from Mandriva 2008.0)
    • rework startup of udev as current makes kernel crash (from Mandriva 2008.0)
    • add support for 64 bits udev
  • Try to render MyInsmod? silent at boot time
  • Adds udev support (mandatory for newest distributions to avoid remapping of devices in a different way as on the original system)
  • We also need vaft format support for USB boot
  • Adds libusual support (Ubuntu 7.10 needs it for USB)
  • Improve Ubuntu/Debian? keyboard detection and support
  • pbinit adapted to new pb (0.8.10). Filtering of docs done in it
  • Suppress some mondo warnings and errors on USB again
  • Tries to fix lack of files in deb mindi package
  • Verify should now work for USB devices
  • More log/mesages improvement for USB support
  • - Supress g_erase_tmpdir_and_scratchdir
  • Improve some log messages for USB support
  • Try to improve install in mindi to avoid issues with isolinux.cfg not installed vene if in the pkg :-(
  • Improve mindi-busybox build
  • In conformity with pb 0.8.9
  • Add support for Ubuntu 7.10 in build process
  • Add USB Key button to Menu UI (CD streamer removed)
  • Attempt to fix error messages on tmp/scratch files at the end by removing those dir at the latest possible.
  • Fix a bug linked to the size of the -E param which could be used (Arnaud Tiger/René? Ribaud).
  • Integrate ~/.pbrc content into mondorescue.pb (required project-builder >= 0.8.7)
  • Put mondorescue in conformity with new pb filtering rules
  • Add USB support at restore time (no test done yet). New start-usb script PB varibale added where useful
  • Unmounting USB device before removal of temporary scratchdir
  • Stil refining USB copy back to mondo (one command was not executed)
  • No need to have the image subdor in the csratchdir when USB.
  • umount the USB partition before attempting to use it
  • Remove useless copy from mindi to mondo at end of USB handling

(risky merge, we are raising the limits of 2 diverging branches. The status of stable is not completely sure as such. Will need lots of tests, but it's not yet done :-()
(merge -r1692:1769 $SVN_M/branches/2.2.5)

File size: 4.1 KB
Line 
1/* vi: set sw=4 ts=4: */
2/*
3 * ll_map.c
4 *
5 *      This program is free software; you can redistribute it and/or
6 *      modify it under the terms of the GNU General Public License
7 *      as published by the Free Software Foundation; either version
8 *      2 of the License, or (at your option) any later version.
9 *
10 * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
11 *
12 */
13
14#include <net/if.h> /* struct ifreq and co. */
15
16#include "libbb.h"
17#include "libnetlink.h"
18#include "ll_map.h"
19
20struct idxmap {
21    struct idxmap *next;
22    int            index;
23    int            type;
24    int            alen;
25    unsigned       flags;
26    unsigned char  addr[8];
27    char           name[16];
28};
29
30static struct idxmap *idxmap[16];
31
32static struct idxmap *find_by_index(int idx)
33{
34    struct idxmap *im;
35
36    for (im = idxmap[idx & 0xF]; im; im = im->next)
37        if (im->index == idx)
38            return im;
39    return NULL;
40}
41
42int ll_remember_index(struct sockaddr_nl *who, struct nlmsghdr *n, void *arg)
43{
44    int h;
45    struct ifinfomsg *ifi = NLMSG_DATA(n);
46    struct idxmap *im, **imp;
47    struct rtattr *tb[IFLA_MAX+1];
48
49    if (n->nlmsg_type != RTM_NEWLINK)
50        return 0;
51
52    if (n->nlmsg_len < NLMSG_LENGTH(sizeof(ifi)))
53        return -1;
54
55    memset(tb, 0, sizeof(tb));
56    parse_rtattr(tb, IFLA_MAX, IFLA_RTA(ifi), IFLA_PAYLOAD(n));
57    if (tb[IFLA_IFNAME] == NULL)
58        return 0;
59
60    h = ifi->ifi_index & 0xF;
61
62    for (imp = &idxmap[h]; (im = *imp) != NULL; imp = &im->next)
63        if (im->index == ifi->ifi_index)
64            goto found;
65
66    im = xmalloc(sizeof(*im));
67    im->next = *imp;
68    im->index = ifi->ifi_index;
69    *imp = im;
70 found:
71    im->type = ifi->ifi_type;
72    im->flags = ifi->ifi_flags;
73    if (tb[IFLA_ADDRESS]) {
74        int alen;
75        im->alen = alen = RTA_PAYLOAD(tb[IFLA_ADDRESS]);
76        if (alen > sizeof(im->addr))
77            alen = sizeof(im->addr);
78        memcpy(im->addr, RTA_DATA(tb[IFLA_ADDRESS]), alen);
79    } else {
80        im->alen = 0;
81        memset(im->addr, 0, sizeof(im->addr));
82    }
83    strcpy(im->name, RTA_DATA(tb[IFLA_IFNAME]));
84    return 0;
85}
86
87const char *ll_idx_n2a(int idx, char *buf)
88{
89    struct idxmap *im;
90
91    if (idx == 0)
92        return "*";
93    im = find_by_index(idx);
94    if (im)
95        return im->name;
96    snprintf(buf, 16, "if%d", idx);
97    return buf;
98}
99
100
101const char *ll_index_to_name(int idx)
102{
103    static char nbuf[16];
104
105    return ll_idx_n2a(idx, nbuf);
106}
107
108#ifdef UNUSED
109int ll_index_to_type(int idx)
110{
111    struct idxmap *im;
112
113    if (idx == 0)
114        return -1;
115    im = find_by_index(idx);
116    if (im)
117        return im->type;
118    return -1;
119}
120#endif
121
122unsigned ll_index_to_flags(int idx)
123{
124    struct idxmap *im;
125
126    if (idx == 0)
127        return 0;
128    im = find_by_index(idx);
129    if (im)
130        return im->flags;
131    return 0;
132}
133
134int xll_name_to_index(const char *const name)
135{
136    int ret = 0;
137    int sock_fd;
138
139/* caching is not warranted - no users which repeatedly call it */
140#ifdef UNUSED
141    static char ncache[16];
142    static int icache;
143
144    struct idxmap *im;
145    int i;
146
147    if (name == NULL)
148        goto out;
149    if (icache && strcmp(name, ncache) == 0) {
150        ret = icache;
151        goto out;
152    }
153    for (i = 0; i < 16; i++) {
154        for (im = idxmap[i]; im; im = im->next) {
155            if (strcmp(im->name, name) == 0) {
156                icache = im->index;
157                strcpy(ncache, name);
158                ret = im->index;
159                goto out;
160            }
161        }
162    }
163    /* We have not found the interface in our cache, but the kernel
164     * may still know about it. One reason is that we may be using
165     * module on-demand loading, which means that the kernel will
166     * load the module and make the interface exist only when
167     * we explicitely request it (check for dev_load() in net/core/dev.c).
168     * I can think of other similar scenario, but they are less common...
169     * Jean II */
170#endif
171
172    sock_fd = socket(AF_INET, SOCK_DGRAM, 0);
173    if (sock_fd) {
174        struct ifreq ifr;
175        int tmp;
176
177        strncpy(ifr.ifr_name, name, IFNAMSIZ);
178        ifr.ifr_ifindex = -1;
179        tmp = ioctl(sock_fd, SIOCGIFINDEX, &ifr);
180        close(sock_fd);
181        if (tmp >= 0)
182            /* In theory, we should redump the interface list
183             * to update our cache, this is left as an exercise
184             * to the reader... Jean II */
185            ret = ifr.ifr_ifindex;
186    }
187/* out:*/
188    if (ret <= 0)
189        bb_error_msg_and_die("cannot find device \"%s\"", name);
190    return ret;
191}
192
193int ll_init_map(struct rtnl_handle *rth)
194{
195    xrtnl_wilddump_request(rth, AF_UNSPEC, RTM_GETLINK);
196    xrtnl_dump_filter(rth, ll_remember_index, &idxmap);
197    return 0;
198}
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