Changeset 1770 in MondoRescue for branches/stable/mindi-busybox/procps/kill.c


Ignore:
Timestamp:
Nov 6, 2007, 11:01:53 AM (12 years ago)
Author:
Bruno Cornec
Message:
  • 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:
1 edited

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  • branches/stable/mindi-busybox/procps/kill.c

    r821 r1770  
    11/* vi: set sw=4 ts=4: */
    22/*
    3  * Mini kill/killall implementation for busybox
     3 * Mini kill/killall[5] implementation for busybox
    44 *
    55 * Copyright (C) 1995, 1996 by Bruce Perens <bruce@pixar.com>.
     
    99 */
    1010
    11 #include "busybox.h"
    12 #include <stdio.h>
    13 #include <stdlib.h>
    14 #include <errno.h>
    15 #include <unistd.h>
    16 #include <signal.h>
    17 #include <ctype.h>
    18 #include <string.h>
    19 #include <unistd.h>
     11#include "libbb.h"
    2012
    21 #define KILL 0
    22 #define KILLALL 1
     13/* Note: kill_main is directly called from shell in order to implement
     14 * kill built-in. Shell substitutes job ids with process groups first.
     15 *
     16 * This brings some complications:
     17 *
     18 * + we can't use xfunc here
     19 * + we can't use applet_name
     20 * + we can't use bb_show_usage
     21 * (Above doesn't apply for killall[5] cases)
     22 *
     23 * kill %n gets translated into kill ' -<process group>' by shell (note space!)
     24 * This is needed to avoid collision with kill -9 ... syntax
     25 */
    2326
     27int kill_main(int argc, char **argv);
    2428int kill_main(int argc, char **argv)
    2529{
    26     int whichApp, signo = SIGTERM;
    27     const char *name;
    28     int errors = 0;
    29 
    30 #ifdef CONFIG_KILLALL
    31     int quiet=0;
    32     /* Figure out what we are trying to do here */
    33     whichApp = (strcmp(bb_applet_name, "killall") == 0)? KILLALL : KILL;
     30    char *arg;
     31    pid_t pid;
     32    int signo = SIGTERM, errors = 0, quiet = 0;
     33#if !ENABLE_KILLALL && !ENABLE_KILLALL5
     34#define killall 0
     35#define killall5 0
    3436#else
    35     whichApp = KILL;
     37/* How to determine who we are? find 3rd char from the end:
     38 * kill, killall, killall5
     39 *  ^i       ^a        ^l  - it's unique
     40 * (checking from the start is complicated by /bin/kill... case) */
     41    const char char3 = argv[0][strlen(argv[0]) - 3];
     42#define killall (ENABLE_KILLALL && char3 == 'a')
     43#define killall5 (ENABLE_KILLALL5 && char3 == 'l')
    3644#endif
    3745
    3846    /* Parse any options */
    39     if (argc < 2)
    40         bb_show_usage();
     47    argc--;
     48    arg = *++argv;
    4149
    42     if(argv[1][0] != '-'){
    43         argv++;
    44         argc--;
     50    if (argc < 1 || arg[0] != '-') {
    4551        goto do_it_now;
    4652    }
    4753
    48     /* The -l option, which prints out signal names. */
    49     if(argv[1][1]=='l' && argv[1][2]=='\0'){
    50         if(argc==2) {
     54    /* The -l option, which prints out signal names.
     55     * Intended usage in shell:
     56     * echo "Died of SIG`kill -l $?`"
     57     * We try to mimic what kill from coreutils-6.8 does */
     58    if (arg[1] == 'l' && arg[2] == '\0') {
     59        if (argc == 1) {
    5160            /* Print the whole signal list */
    52             int col = 0;
    53             for(signo=1; signo < NSIG; signo++) {
    54                 name = u_signal_names(0, &signo, 1);
    55                 if(name==NULL)  /* unnamed */
    56                     continue;
    57                 col += printf("%2d) %-16s", signo, name);
    58                 if (col > 60) {
    59                     printf("\n");
    60                     col = 0;
     61            for (signo = 1; signo < 32; signo++) {
     62                const char *name = get_signame(signo);
     63                if (!isdigit(name[0]))
     64                    puts(name);
     65            }
     66        } else { /* -l <sig list> */
     67            while ((arg = *++argv)) {
     68                if (isdigit(arg[0])) {
     69                    signo = bb_strtou(arg, NULL, 10);
     70                    if (errno) {
     71                        bb_error_msg("unknown signal '%s'", arg);
     72                        return EXIT_FAILURE;
     73                    }
     74                    /* Exitcodes >= 0x80 are to be treated
     75                     * as "killed by signal (exitcode & 0x7f)" */
     76                    puts(get_signame(signo & 0x7f));
     77                    /* TODO: 'bad' signal# - coreutils says:
     78                     * kill: 127: invalid signal
     79                     * we just print "127" instead */
     80                } else {
     81                    signo = get_signum(arg);
     82                    if (signo < 0) {
     83                        bb_error_msg("unknown signal '%s'", arg);
     84                        return EXIT_FAILURE;
     85                    }
     86                    printf("%d\n", signo);
    6187                }
    6288            }
    63             printf("\n");
    64 
    65         } else {
    66             for(argv++; *argv; argv++) {
    67                 name = u_signal_names(*argv, &signo, -1);
    68                 if(name!=NULL)
    69                     printf("%s\n", name);
    70             }
    7189        }
    72         /* If they specified -l, were all done */
     90        /* If they specified -l, we are all done */
    7391        return EXIT_SUCCESS;
    7492    }
    7593
    76 #ifdef CONFIG_KILLALL
    7794    /* The -q quiet option */
    78     if(whichApp != KILL && argv[1][1]=='q' && argv[1][2]=='\0'){
    79         quiet++;
    80         argv++;
     95    if (killall && arg[1] == 'q' && arg[2] == '\0') {
     96        quiet = 1;
     97        arg = *++argv;
    8198        argc--;
    82         if(argc<2 || argv[1][0] != '-'){
    83             goto do_it_now;
    84         }
     99        if (argc < 1) bb_show_usage();
     100        if (arg[0] != '-') goto do_it_now;
    85101    }
    86 #endif
    87102
    88     if(!u_signal_names(argv[1]+1, &signo, 0))
    89         bb_error_msg_and_die( "bad signal name '%s'", argv[1]+1);
    90     argv+=2;
    91     argc-=2;
     103    /* -SIG */
     104    signo = get_signum(&arg[1]);
     105    if (signo < 0) { /* || signo > MAX_SIGNUM ? */
     106        bb_error_msg("bad signal name '%s'", &arg[1]);
     107        return EXIT_FAILURE;
     108    }
     109    arg = *++argv;
     110    argc--;
    92111
    93112do_it_now:
    94113
    95     /* Pid or name required */
    96     if (argc <= 0)
    97         bb_show_usage();
     114    if (killall5) {
     115        pid_t sid;
     116        procps_status_t* p = NULL;
    98117
    99     if (whichApp == KILL) {
    100         /* Looks like they want to do a kill. Do that */
    101         while (--argc >= 0) {
    102             int pid;
     118        /* Now stop all processes */
     119        kill(-1, SIGSTOP);
     120        /* Find out our own session id */
     121        pid = getpid();
     122        sid = getsid(pid);
     123        /* Now kill all processes except our session */
     124        while ((p = procps_scan(p, PSSCAN_PID|PSSCAN_SID))) {
     125            if (p->sid != sid && p->pid != pid && p->pid != 1)
     126                kill(p->pid, signo);
     127        }
     128        /* And let them continue */
     129        kill(-1, SIGCONT);
     130        return 0;
     131    }
    103132
    104             if (!isdigit(**argv) && **argv != '-')
    105                 bb_error_msg_and_die( "Bad PID '%s'", *argv);
    106             pid = strtol(*argv, NULL, 0);
    107             if (kill(pid, signo) != 0) {
    108                 bb_perror_msg( "Could not kill pid '%d'", pid);
     133    /* Pid or name is required for kill/killall */
     134    if (argc < 1) {
     135        puts("You need to specify whom to kill");
     136        return EXIT_FAILURE;
     137    }
     138
     139    if (killall) {
     140        /* Looks like they want to do a killall.  Do that */
     141        pid = getpid();
     142        while (arg) {
     143            pid_t* pidList;
     144
     145            pidList = find_pid_by_name(arg);
     146            if (*pidList == 0) {
    109147                errors++;
    110             }
    111             argv++;
    112         }
     148                if (!quiet)
     149                    bb_error_msg("%s: no process killed", arg);
     150            } else {
     151                pid_t *pl;
    113152
    114     }
    115 #ifdef CONFIG_KILLALL
    116     else {
    117         pid_t myPid=getpid();
    118         /* Looks like they want to do a killall.  Do that */
    119         while (--argc >= 0) {
    120             long* pidList;
    121 
    122             pidList = find_pid_by_name(*argv);
    123             if (!pidList || *pidList<=0) {
    124                 errors++;
    125                 if (quiet==0)
    126                     bb_error_msg( "%s: no process killed", *argv);
    127             } else {
    128                 long *pl;
    129 
    130                 for(pl = pidList; *pl !=0 ; pl++) {
    131                     if (*pl==myPid)
     153                for (pl = pidList; *pl; pl++) {
     154                    if (*pl == pid)
    132155                        continue;
    133                     if (kill(*pl, signo) != 0) {
    134                         errors++;
    135                         if (quiet==0)
    136                             bb_perror_msg( "Could not kill pid '%ld'", *pl);
    137                     }
     156                    if (kill(*pl, signo) == 0)
     157                        continue;
     158                    errors++;
     159                    if (!quiet)
     160                        bb_perror_msg("cannot kill pid %u", (unsigned)*pl);
    138161                }
    139162            }
    140163            free(pidList);
    141             argv++;
     164            arg = *++argv;
    142165        }
     166        return errors;
    143167    }
    144 #endif
     168
     169    /* Looks like they want to do a kill. Do that */
     170    while (arg) {
     171        /* Support shell 'space' trick */
     172        if (arg[0] == ' ')
     173            arg++;
     174        pid = bb_strtoi(arg, NULL, 10);
     175        if (errno) {
     176            bb_error_msg("bad pid '%s'", arg);
     177            errors++;
     178        } else if (kill(pid, signo) != 0) {
     179            bb_perror_msg("cannot kill pid %d", (int)pid);
     180            errors++;
     181        }
     182        arg = *++argv;
     183    }
    145184    return errors;
    146185}
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