Ignore:
Timestamp:
Jan 1, 2014, 12:47:38 AM (7 years ago)
Author:
Bruno Cornec
Message:
  • Update mindi-busybox to 1.21.1
File:
1 edited

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  • branches/3.2/mindi-busybox/runit/chpst.c

    r2725 r3232  
    2929/* Dependencies on runit_lib.c removed */
    3030
     31//usage:#define chpst_trivial_usage
     32//usage:       "[-vP012] [-u USER[:GRP]] [-U USER[:GRP]] [-e DIR]\n"
     33//usage:       "    [-/ DIR] [-n NICE] [-m BYTES] [-d BYTES] [-o N]\n"
     34//usage:       "    [-p N] [-f BYTES] [-c BYTES] PROG ARGS"
     35//usage:#define chpst_full_usage "\n\n"
     36//usage:       "Change the process state, run PROG\n"
     37//usage:     "\n    -u USER[:GRP]   Set uid and gid"
     38//usage:     "\n    -U USER[:GRP]   Set $UID and $GID in environment"
     39//usage:     "\n    -e DIR      Set environment variables as specified by files"
     40//usage:     "\n            in DIR: file=1st_line_of_file"
     41//usage:     "\n    -/ DIR      Chroot to DIR"
     42//usage:     "\n    -n NICE     Add NICE to nice value"
     43//usage:     "\n    -m BYTES    Same as -d BYTES -s BYTES -l BYTES"
     44//usage:     "\n    -d BYTES    Limit data segment"
     45//usage:     "\n    -o N        Limit number of open files per process"
     46//usage:     "\n    -p N        Limit number of processes per uid"
     47//usage:     "\n    -f BYTES    Limit output file sizes"
     48//usage:     "\n    -c BYTES    Limit core file size"
     49//usage:     "\n    -v      Verbose"
     50//usage:     "\n    -P      Create new process group"
     51//usage:     "\n    -0      Close stdin"
     52//usage:     "\n    -1      Close stdout"
     53//usage:     "\n    -2      Close stderr"
     54//usage:
     55//usage:#define envdir_trivial_usage
     56//usage:       "DIR PROG ARGS"
     57//usage:#define envdir_full_usage "\n\n"
     58//usage:       "Set various environment variables as specified by files\n"
     59//usage:       "in the directory DIR, run PROG"
     60//usage:
     61//usage:#define envuidgid_trivial_usage
     62//usage:       "USER PROG ARGS"
     63//usage:#define envuidgid_full_usage "\n\n"
     64//usage:       "Set $UID to USER's uid and $GID to USER's gid, run PROG"
     65//usage:
     66//usage:#define setuidgid_trivial_usage
     67//usage:       "USER PROG ARGS"
     68//usage:#define setuidgid_full_usage "\n\n"
     69//usage:       "Set uid and gid to USER's uid and gid, drop supplementary group ids,\n"
     70//usage:       "run PROG"
     71//usage:
     72//usage:#define softlimit_trivial_usage
     73//usage:       "[-a BYTES] [-m BYTES] [-d BYTES] [-s BYTES] [-l BYTES]\n"
     74//usage:       "    [-f BYTES] [-c BYTES] [-r BYTES] [-o N] [-p N] [-t N]\n"
     75//usage:       "    PROG ARGS"
     76//usage:#define softlimit_full_usage "\n\n"
     77//usage:       "Set soft resource limits, then run PROG\n"
     78//usage:     "\n    -a BYTES    Limit total size of all segments"
     79//usage:     "\n    -m BYTES    Same as -d BYTES -s BYTES -l BYTES -a BYTES"
     80//usage:     "\n    -d BYTES    Limit data segment"
     81//usage:     "\n    -s BYTES    Limit stack segment"
     82//usage:     "\n    -l BYTES    Limit locked memory size"
     83//usage:     "\n    -o N        Limit number of open files per process"
     84//usage:     "\n    -p N        Limit number of processes per uid"
     85//usage:     "\nOptions controlling file sizes:"
     86//usage:     "\n    -f BYTES    Limit output file sizes"
     87//usage:     "\n    -c BYTES    Limit core file size"
     88//usage:     "\nEfficiency opts:"
     89//usage:     "\n    -r BYTES    Limit resident set size"
     90//usage:     "\n    -t N        Limit CPU time, process receives"
     91//usage:     "\n            a SIGXCPU after N seconds"
     92
    3193#include "libbb.h"
     94#include <sys/resource.h> /* getrlimit */
    3295
    3396/*
     
    344407        edir(env_dir);
    345408
    346     // FIXME: chrooted jail must have /etc/passwd if we move this after chroot!
    347     // OTOH chroot fails for non-roots!
    348     // SOLUTION: cache uid/gid before chroot, apply uid/gid after
     409    if (opt & (OPT_u|OPT_U))
     410        xget_uidgid(&ugid, set_user);
     411
     412    // chrooted jail must have /etc/passwd if we move this after chroot.
     413    // OTOH chroot fails for non-roots.
     414    // Solution: cache uid/gid before chroot, apply uid/gid after.
    349415    if (opt & OPT_U) {
    350         xget_uidgid(&ugid, env_user);
    351416        xsetenv("GID", utoa(ugid.gid));
    352417        xsetenv("UID", utoa(ugid.uid));
    353418    }
    354419
    355     if (opt & OPT_u) {
    356         xget_uidgid(&ugid, set_user);
    357     }
    358 
    359420    if (opt & OPT_root) {
    360         xchdir(root);
    361         xchroot(".");
     421        xchroot(root);
    362422    }
    363423
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