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    • /[magellan-source]/tags/mkinitrd-6_2_0/libpwdgrp/uidgid_get.c

    Diff of /tags/mkinitrd-6_2_0/libpwdgrp/uidgid_get.c

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    revision 532 by niro, Sat Sep 1 22:45:15 2007 UTC revision 816 by niro, Fri Apr 24 18:33:46 2009 UTC
    # Line 25  OTHERWISE) ARISING IN ANY WAY OUT OF THE Line 25  OTHERWISE) ARISING IN ANY WAY OUT OF THE
    25  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
    26  */  */
    27    
    28  #include "busybox.h"  #include "libbb.h"
    29    
    30  int get_uidgid(struct bb_uidgid_t *u, const char *ug, int numeric_ok)  /* Always sets uid and gid */
    31    int FAST_FUNC get_uidgid(struct bb_uidgid_t *u, const char *ug, int numeric_ok)
    32  {  {
    33   struct passwd *pwd;   struct passwd *pwd;
    34   struct group *gr;   struct group *gr;
    # Line 53  int get_uidgid(struct bb_uidgid_t *u, co Line 54  int get_uidgid(struct bb_uidgid_t *u, co
    54   goto skip;   goto skip;
    55   }   }
    56   }   }
    57     /* Either it is not numeric, or caller disallows numeric username */
    58   pwd = getpwnam(user);   pwd = getpwnam(user);
    59   if (!pwd)   if (!pwd)
    60   return 0;   return 0;
    # Line 74  int get_uidgid(struct bb_uidgid_t *u, co Line 76  int get_uidgid(struct bb_uidgid_t *u, co
    76   }   }
    77   return 1;   return 1;
    78  }  }
    79    void FAST_FUNC xget_uidgid(struct bb_uidgid_t *u, const char *ug)
    80    {
    81     if (!get_uidgid(u, ug, 1))
    82     bb_error_msg_and_die("unknown user/group %s", ug);
    83    }
    84    
    85    /* chown-like:
    86     * "user" sets uid only,
    87     * ":group" sets gid only
    88     * "user:" sets uid and gid (to user's primary group id)
    89     * "user:group" sets uid and gid
    90     * ('unset' uid or gid retains the value it has on entry)
    91     */
    92    void FAST_FUNC parse_chown_usergroup_or_die(struct bb_uidgid_t *u, char *user_group)
    93    {
    94     char *group;
    95    
    96     /* Check if there is a group name */
    97     group = strchr(user_group, '.'); /* deprecated? */
    98     if (!group)
    99     group = strchr(user_group, ':');
    100     else
    101     *group = ':'; /* replace '.' with ':' */
    102    
    103     /* Parse "user[:[group]]" */
    104     if (!group) { /* "user" */
    105     u->uid = get_ug_id(user_group, xuname2uid);
    106     } else if (group == user_group) { /* ":group" */
    107     u->gid = get_ug_id(group + 1, xgroup2gid);
    108     } else {
    109     if (!group[1]) /* "user:" */
    110     *group = '\0';
    111     xget_uidgid(u, user_group);
    112     }
    113    }
    114    
    115  #if 0  #if 0
    116  #include <stdio.h>  #include <stdio.h>
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