diff options
Diffstat (limited to 'libc/grp/__getgrent.c')
| -rw-r--r-- | libc/grp/__getgrent.c | 168 |
1 files changed, 0 insertions, 168 deletions
diff --git a/libc/grp/__getgrent.c b/libc/grp/__getgrent.c deleted file mode 100644 index 612f112..0000000 --- a/libc/grp/__getgrent.c +++ /dev/null @@ -1,168 +0,0 @@ -/* - * __getgrent.c - This file is part of the libc-8086/grp package for ELKS, - * Copyright (C) 1995, 1996 Nat Friedman <ndf@linux.mit.edu>. - * - * This library is free software; you can redistribute it and/or - * modify it under the terms of the GNU Library General Public - * License as published by the Free Software Foundation; either - * version 2 of the License, or (at your option) any later version. - * - * This library is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * Library General Public License for more details. - * - * You should have received a copy of the GNU Library General Public - * License along with this library; if not, write to the Free - * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - * - */ - -#include <unistd.h> -#include <stdlib.h> -#include <string.h> -#include <grp.h> -#include "config.h" - -/* - * This is the core group-file read function. It behaves exactly like - * getgrent() except that it is passed a file descriptor. getgrent() - * is just a wrapper for this function. - */ -struct group * -__getgrent(int grp_fd) -{ -#ifndef GR_SCALE_DYNAMIC - static char line_buff[GR_MAX_LINE_LEN]; - static char * members[GR_MAX_MEMBERS]; -#else - static char * line_buff = NULL; - static char ** members = NULL; - short line_index; - short buff_size; -#endif - static struct group group; - register char * ptr; - char * field_begin; - short member_num; - char * endptr; - int line_len; - - - /* We use the restart label to handle malformatted lines */ -restart: -#ifdef GR_SCALE_DYNAMIC - line_index=0; - buff_size=256; -#endif - -#ifndef GR_SCALE_DYNAMIC - /* Read the line into the static buffer */ - if ((line_len=read(grp_fd, line_buff, GR_MAX_LINE_LEN))<=0) - return NULL; - field_begin=strchr(line_buff, '\n'); - if (field_begin!=NULL) - lseek(grp_fd, (long) (1+field_begin-(line_buff+line_len)), SEEK_CUR); - else /* The line is too long - skip it :-\ */ - { - do { if ((line_len=read(grp_fd, line_buff, GR_MAX_LINE_LEN))<=0) - return NULL; - } while (!(field_begin=strchr(line_buff, '\n'))); - lseek(grp_fd, (long) ((field_begin-line_buff)-line_len+1), SEEK_CUR); - goto restart; - } - if (*line_buff=='#' || *line_buff==' ' || *line_buff=='\n' || - *line_buff=='\t') - goto restart; - *field_begin='\0'; - -#else /* !GR_SCALE_DYNAMIC */ - line_buff=realloc(line_buff, buff_size); - while (1) - { - if ((line_len=read(grp_fd, line_buff+line_index, - buff_size-line_index))<=0) - return NULL; - field_begin=strchr(line_buff, '\n'); - if (field_begin!=NULL) - { - lseek(grp_fd, (long) (1+field_begin-(line_len+line_index+line_buff)), - SEEK_CUR); - *field_begin='\0'; - if (*line_buff=='#' || *line_buff==' ' || *line_buff=='\n' || - *line_buff=='\t') - goto restart; - break; - } - else /* Allocate some more space */ - { - line_index=buff_size; - buff_size+=256; - line_buff=realloc(line_buff, buff_size); - } - } -#endif /* GR_SCALE_DYNAMIC */ - - /* Now parse the line */ - group.gr_name=line_buff; - ptr=strchr(line_buff, ':'); - if (ptr==NULL) goto restart; - *ptr++='\0'; - - group.gr_passwd=ptr; - ptr=strchr(ptr, ':'); - if (ptr==NULL) goto restart; - *ptr++='\0'; - - field_begin=ptr; - ptr=strchr(ptr, ':'); - if (ptr==NULL) goto restart; - *ptr++='\0'; - - group.gr_gid=(gid_t) strtoul(field_begin, &endptr, 10); - if (*endptr!='\0') goto restart; - - member_num=0; - field_begin=ptr; - -#ifndef GR_SCALE_DYNAMIC - while ((ptr=strchr(ptr, ','))!=NULL) - { - *ptr='\0'; - ptr++; - members[member_num]=field_begin; - field_begin=ptr; - member_num++; - } - if (*field_begin=='\0') - members[member_num]=NULL; - else - { - members[member_num]=field_begin; - members[member_num+1]=NULL; - } -#else /* !GR_SCALE_DYNAMIC */ - if (members!=NULL) - free (members); - members=(char **) malloc(1*sizeof(char *)); - while ((ptr=strchr(ptr, ','))!=NULL) - { - *ptr='\0'; - ptr++; - members[member_num]=field_begin; - field_begin=ptr; - member_num++; - members=(char **)realloc((void *)members, (member_num+1)*sizeof(char *)); - } - if (*field_begin=='\0') - members[member_num]=NULL; - else - { - members[member_num]=field_begin; - members[member_num+1]=NULL; - } -#endif /* GR_SCALE_DYNAMIC */ - - group.gr_mem=members; - return &group; -} |