Implement the <grp.h> API properly.
This commit is contained in:
parent
a7e1207e0f
commit
3785beb7f5
14 changed files with 671 additions and 46 deletions
1
Makefile
1
Makefile
|
@ -58,6 +58,7 @@ sysroot-fsh:
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mkdir -p "$(SYSROOT)/src"
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mkdir -p "$(SYSROOT)/tmp"
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echo "root::0:0:root:/root:sh" > "$(SYSROOT)/etc/passwd"
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echo "root::0:root" > "$(SYSROOT)/etc/group"
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.PHONY: sysroot-base-headers
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sysroot-base-headers: sysroot-fsh
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@ -235,7 +235,17 @@ fsmarshall/fsm_recv.o \
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fsmarshall/fsm_send.o \
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getopt/getopt_long.o \
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getopt/getopt.o \
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grp/grent.o \
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grp/endgrent.o \
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grp/fgetgrent.o \
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grp/fgetgrent_r.o \
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grp/getgrent.o \
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grp/getgrent_r.o \
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grp/getgrgid.o \
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grp/getgrgid_r.o \
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grp/getgrnam.o \
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grp/getgrnam_r.o \
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grp/opengr.o \
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grp/setgrent.o \
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init/init.o \
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ioleast/preadall.o \
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ioleast/preadleast.o \
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34
libc/grp/endgrent.cpp
Normal file
34
libc/grp/endgrent.cpp
Normal file
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@ -0,0 +1,34 @@
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/*******************************************************************************
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Copyright(C) Jonas 'Sortie' Termansen 2013.
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This file is part of the Sortix C Library.
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The Sortix C Library is free software: you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation, either version 3 of the License, or (at your
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option) any later version.
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The Sortix C Library is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with the Sortix C Library. If not, see <http://www.gnu.org/licenses/>.
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grp/endgrent.cpp
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Closes the group database.
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*******************************************************************************/
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#include <grp.h>
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#include <stdio.h>
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extern "C" void endgrent(void)
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{
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if ( !__grp_file )
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return;
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fclose(__grp_file);
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__grp_file = NULL;
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}
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57
libc/grp/fgetgrent.cpp
Normal file
57
libc/grp/fgetgrent.cpp
Normal file
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@ -0,0 +1,57 @@
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/*******************************************************************************
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Copyright(C) Jonas 'Sortie' Termansen 2013.
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This file is part of the Sortix C Library.
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The Sortix C Library is free software: you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation, either version 3 of the License, or (at your
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option) any later version.
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The Sortix C Library is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with the Sortix C Library. If not, see <http://www.gnu.org/licenses/>.
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grp/fgetgrent.cpp
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Reads a group entry from a FILE in a thread-insecure manner.
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*******************************************************************************/
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#include <errno.h>
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#include <grp.h>
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#include <stdlib.h>
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extern "C" struct group* fgetgrent(FILE* fp)
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{
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static struct group result_object;
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static char* buf = NULL;
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static size_t buflen = 0;
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if ( !buf )
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{
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size_t new_buflen = 64;
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if ( !(buf = (char*) malloc(new_buflen)) )
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return NULL;
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buflen = new_buflen;
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}
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struct group* result;
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retry:
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int errnum = fgetgrent_r(fp, &result_object, buf, buflen, &result);
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if ( errnum == ERANGE )
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{
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size_t new_buflen = 2 * buflen;
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char* new_buf = (char*) realloc(buf, new_buflen);
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if ( !new_buf )
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return NULL;
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buf = new_buf;
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buflen = new_buflen;
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goto retry;
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}
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if ( errnum < 0 )
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return errno = errnum, (struct group*) NULL;
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return result;
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}
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211
libc/grp/fgetgrent_r.cpp
Normal file
211
libc/grp/fgetgrent_r.cpp
Normal file
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@ -0,0 +1,211 @@
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/*******************************************************************************
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Copyright(C) Jonas 'Sortie' Termansen 2013.
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This file is part of the Sortix C Library.
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The Sortix C Library is free software: you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation, either version 3 of the License, or (at your
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option) any later version.
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The Sortix C Library is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with the Sortix C Library. If not, see <http://www.gnu.org/licenses/>.
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grp/fgetgrent_r.cpp
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Reads a group entry from a FILE.
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*******************************************************************************/
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#include <sys/types.h>
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#include <errno.h>
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#include <inttypes.h>
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#include <grp.h>
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#include <stddef.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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static char* next_field(char** current)
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{
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char* result = *current;
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if ( result )
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{
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char* next = result;
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while ( *next && *next != ':' )
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next++;
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if ( !*next )
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next = NULL;
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else
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*next++ = '\0';
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*current = next;
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}
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return result;
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}
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static id_t next_field_id(char** current)
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{
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char* id_str = next_field(current);
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if ( !id_str )
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return -1;
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char* id_endptr;
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intmax_t id_imax = strtoimax(id_str, &id_endptr, 10);
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if ( id_imax < 0 || *id_endptr )
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return -1;
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id_t id = (id_t) id_imax;
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if ( id != id_imax )
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return -1;
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return id;
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}
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static size_t count_num_members(const char* member_string)
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{
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size_t result = 0;
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while ( *member_string )
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{
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result++;
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while ( *member_string && *member_string != ',' )
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member_string++;
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}
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return result;
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}
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static char* next_member(char** current)
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{
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char* result = *current;
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if ( result )
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{
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char* next = result;
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while ( *next && *next != ',' )
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next++;
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if ( !*next )
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next = NULL;
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else
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*next++ = '\0';
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*current = next;
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}
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return result;
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}
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extern "C"
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int fgetgrent_r(FILE* restrict fp,
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struct group* restrict result,
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char* restrict buf,
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size_t buf_len,
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struct group** restrict result_pointer)
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{
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if ( !result_pointer )
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return errno = EINVAL;
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if ( !fp || !result || !buf )
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return *result_pointer = NULL, errno = EINVAL;
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int original_errno = errno;
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flockfile(fp);
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off_t original_offset = ftello(fp);
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if ( original_offset < 0 )
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{
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funlockfile(fp);
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return *result_pointer = NULL, errno;
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}
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size_t buf_used = 0;
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int ic;
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while ( (ic = fgetc(fp)) != EOF )
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{
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if ( ic == '\n' )
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break;
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if ( buf_used == buf_len )
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{
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fseeko(fp, original_offset, SEEK_SET);
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funlockfile(fp);
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return *result_pointer = NULL, errno = ERANGE;
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}
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buf[buf_used++] = (char) ic;
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}
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if ( ferror(fp) )
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{
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int original_error = errno;
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fseeko(fp, original_offset, SEEK_SET);
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funlockfile(fp);
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return *result_pointer = NULL, original_error;
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}
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if ( !buf_used && feof(fp) )
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{
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funlockfile(fp);
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return *result_pointer = NULL, errno = original_errno, NULL;
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}
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if ( buf_used == buf_len )
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{
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fseeko(fp, original_offset, SEEK_SET);
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funlockfile(fp);
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return *result_pointer = NULL, errno = ERANGE;
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}
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buf[buf_used++] = '\0';
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if ( false )
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{
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parse_failure:
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fseeko(fp, original_offset, SEEK_SET);
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funlockfile(fp);
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return errno = EINVAL;
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}
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if ( false )
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{
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range_failure:
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fseeko(fp, original_offset, SEEK_SET);
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funlockfile(fp);
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return *result_pointer = NULL, errno = ERANGE;
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}
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char* parse_str = buf;
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if ( !(result->gr_name = next_field(&parse_str)) )
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goto parse_failure;
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if ( !(result->gr_passwd = next_field(&parse_str)) )
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goto parse_failure;
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if ( !(result->gr_gid = next_field_id(&parse_str)) < 0 )
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goto parse_failure;
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char* member_string;
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if ( !(member_string = next_field(&parse_str)) )
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goto parse_failure;
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if ( parse_str )
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goto parse_failure;
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while ( buf_used % alignof(char*) != 0 )
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{
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if ( buf_used == buf_len )
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goto range_failure;
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buf_used++;
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}
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size_t num_members = count_num_members(member_string);
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size_t member_list_bytes = (num_members + 1) * sizeof(char*);
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size_t available_bytes = buf_len < buf_used;
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if ( available_bytes < member_list_bytes )
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goto range_failure;
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result->gr_mem = (char**) (buf + buf_used);
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buf_used += member_list_bytes;
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char* member_parse_str = member_string;
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for ( size_t i = 0; i < num_members + 1; i++ )
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result->gr_mem[i] = next_member(&member_parse_str);
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funlockfile(fp);
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return *result_pointer = result, 0;
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}
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35
libc/grp/getgrent.cpp
Normal file
35
libc/grp/getgrent.cpp
Normal file
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@ -0,0 +1,35 @@
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/*******************************************************************************
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Copyright(C) Jonas 'Sortie' Termansen 2013.
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This file is part of the Sortix C Library.
|
||||
|
||||
The Sortix C Library is free software: you can redistribute it and/or modify
|
||||
it under the terms of the GNU Lesser General Public License as published by
|
||||
the Free Software Foundation, either version 3 of the License, or (at your
|
||||
option) any later version.
|
||||
|
||||
The Sortix C 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 Lesser General Public
|
||||
License for more details.
|
||||
|
||||
You should have received a copy of the GNU Lesser General Public License
|
||||
along with the Sortix C Library. If not, see <http://www.gnu.org/licenses/>.
|
||||
|
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grp/getgrent.cpp
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Reads a group entry in a thread-insecure manner.
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*******************************************************************************/
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#include <grp.h>
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#include <stddef.h>
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extern "C" { FILE* __grp_file = NULL; }
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extern "C" struct group* getgrent(void)
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{
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if ( !__grp_file && !(__grp_file = opengr()) )
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return NULL;
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return fgetgrent(__grp_file);
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}
|
39
libc/grp/getgrent_r.cpp
Normal file
39
libc/grp/getgrent_r.cpp
Normal file
|
@ -0,0 +1,39 @@
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/*******************************************************************************
|
||||
|
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Copyright(C) Jonas 'Sortie' Termansen 2013.
|
||||
|
||||
This file is part of the Sortix C Library.
|
||||
|
||||
The Sortix C Library is free software: you can redistribute it and/or modify
|
||||
it under the terms of the GNU Lesser General Public License as published by
|
||||
the Free Software Foundation, either version 3 of the License, or (at your
|
||||
option) any later version.
|
||||
|
||||
The Sortix C 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 Lesser General Public
|
||||
License for more details.
|
||||
|
||||
You should have received a copy of the GNU Lesser General Public License
|
||||
along with the Sortix C Library. If not, see <http://www.gnu.org/licenses/>.
|
||||
|
||||
grp/getgrent_r.cpp
|
||||
Reads a group entry (but not fully thread-securely).
|
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|
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*******************************************************************************/
|
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|
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#include <errno.h>
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#include <grp.h>
|
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|
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extern "C"
|
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int getgrent_r(struct group* restrict result,
|
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char* restrict buf,
|
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size_t buflen,
|
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struct group** restrict result_pointer)
|
||||
{
|
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if ( !result_pointer )
|
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return errno = EINVAL;
|
||||
if ( !__grp_file && !(__grp_file = opengr()) )
|
||||
return errno;
|
||||
return fgetgrent_r(__grp_file, result, buf, buflen, result_pointer);
|
||||
}
|
|
@ -17,51 +17,42 @@
|
|||
You should have received a copy of the GNU Lesser General Public License
|
||||
along with the Sortix C Library. If not, see <http://www.gnu.org/licenses/>.
|
||||
|
||||
grp/grent.cpp
|
||||
Group database.
|
||||
grp/getgrgid.cpp
|
||||
Searchs the group database for a group with the given numeric group id in a
|
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thread-insecure manner.
|
||||
|
||||
*******************************************************************************/
|
||||
|
||||
#include <sys/types.h>
|
||||
|
||||
#include <errno.h>
|
||||
#include <grp.h>
|
||||
#include <stdlib.h>
|
||||
#include <string.h>
|
||||
|
||||
const gid_t ROOT_GID = 0;
|
||||
const char* const ROOT_NAME = "root";
|
||||
|
||||
static struct group global_group;
|
||||
|
||||
static struct group* fill_group(struct group* gr)
|
||||
{
|
||||
const char* env_groupname = getenv("GROUPNAME");
|
||||
strcpy(gr->gr_name, env_groupname ? env_groupname : ROOT_NAME);
|
||||
const char* env_groupid = getenv("GROUPID");
|
||||
gr->gr_gid = env_groupid ? atoi(env_groupid) : ROOT_GID;
|
||||
return gr;
|
||||
}
|
||||
|
||||
static gid_t lookup_groupname(const char* name)
|
||||
{
|
||||
const char* env_groupname = getenv("GROUPNAME");
|
||||
const char* my_groupname = env_groupname ? env_groupname : ROOT_NAME;
|
||||
if ( !strcmp(my_groupname, name) )
|
||||
{
|
||||
const char* env_groupid = getenv("GROUPID");
|
||||
if ( env_groupid )
|
||||
return atoi(env_groupid);
|
||||
}
|
||||
return 1;
|
||||
}
|
||||
|
||||
extern "C" struct group* getgrgid(gid_t gid)
|
||||
{
|
||||
(void) gid;
|
||||
return fill_group(&global_group);
|
||||
}
|
||||
|
||||
extern "C" struct group* getgrnam(const char* name)
|
||||
{
|
||||
return getgrgid(lookup_groupname(name));
|
||||
static struct group result_object;
|
||||
static char* buf = NULL;
|
||||
static size_t buflen = 0;
|
||||
if ( !buf )
|
||||
{
|
||||
size_t new_buflen = 64;
|
||||
if ( !(buf = (char*) malloc(new_buflen)) )
|
||||
return NULL;
|
||||
buflen = new_buflen;
|
||||
}
|
||||
struct group* result;
|
||||
retry:
|
||||
int errnum = getgrgid_r(gid, &result_object, buf, buflen, &result);
|
||||
if ( errnum == ERANGE )
|
||||
{
|
||||
size_t new_buflen = 2 * buflen;
|
||||
char* new_buf = (char*) realloc(buf, new_buflen);
|
||||
if ( !new_buf )
|
||||
return NULL;
|
||||
buf = new_buf;
|
||||
buflen = new_buflen;
|
||||
goto retry;
|
||||
}
|
||||
if ( errnum < 0 )
|
||||
return errno = errnum, (struct group*) NULL;
|
||||
return result;
|
||||
}
|
54
libc/grp/getgrgid_r.cpp
Normal file
54
libc/grp/getgrgid_r.cpp
Normal file
|
@ -0,0 +1,54 @@
|
|||
/*******************************************************************************
|
||||
|
||||
Copyright(C) Jonas 'Sortie' Termansen 2013.
|
||||
|
||||
This file is part of the Sortix C Library.
|
||||
|
||||
The Sortix C Library is free software: you can redistribute it and/or modify
|
||||
it under the terms of the GNU Lesser General Public License as published by
|
||||
the Free Software Foundation, either version 3 of the License, or (at your
|
||||
option) any later version.
|
||||
|
||||
The Sortix C 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 Lesser General Public
|
||||
License for more details.
|
||||
|
||||
You should have received a copy of the GNU Lesser General Public License
|
||||
along with the Sortix C Library. If not, see <http://www.gnu.org/licenses/>.
|
||||
|
||||
grp/getgrgid_r.cpp
|
||||
Searchs the group database for a group with the given numeric group id.
|
||||
|
||||
*******************************************************************************/
|
||||
|
||||
#include <errno.h>
|
||||
#include <grp.h>
|
||||
#include <stdio.h>
|
||||
|
||||
extern "C"
|
||||
int getgrgid_r(gid_t gid,
|
||||
struct group* restrict ret,
|
||||
char* restrict buf,
|
||||
size_t buflen,
|
||||
struct group** restrict ret_ptr)
|
||||
{
|
||||
if ( !ret_ptr )
|
||||
return errno = EINVAL;
|
||||
if ( !ret || !buf )
|
||||
return *ret_ptr = NULL, errno = EINVAL;
|
||||
FILE* fgroup = opengr();
|
||||
if ( !fgroup )
|
||||
return *ret_ptr = NULL, errno;
|
||||
int errnum;
|
||||
while ( (errnum = fgetgrent_r(fgroup, ret, buf, buflen, ret_ptr)) == 0 &&
|
||||
*ret_ptr )
|
||||
{
|
||||
if ( (*ret_ptr)->gr_gid != gid )
|
||||
continue;
|
||||
fclose(fgroup);
|
||||
return *ret_ptr = *ret_ptr, 0;
|
||||
}
|
||||
fclose(fgroup);
|
||||
return *ret_ptr = NULL, errnum ? errnum : errno = ENOGROUP;
|
||||
}
|
58
libc/grp/getgrnam.cpp
Normal file
58
libc/grp/getgrnam.cpp
Normal file
|
@ -0,0 +1,58 @@
|
|||
/*******************************************************************************
|
||||
|
||||
Copyright(C) Jonas 'Sortie' Termansen 2013.
|
||||
|
||||
This file is part of the Sortix C Library.
|
||||
|
||||
The Sortix C Library is free software: you can redistribute it and/or modify
|
||||
it under the terms of the GNU Lesser General Public License as published by
|
||||
the Free Software Foundation, either version 3 of the License, or (at your
|
||||
option) any later version.
|
||||
|
||||
The Sortix C 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 Lesser General Public
|
||||
License for more details.
|
||||
|
||||
You should have received a copy of the GNU Lesser General Public License
|
||||
along with the Sortix C Library. If not, see <http://www.gnu.org/licenses/>.
|
||||
|
||||
grp/getgrnam.cpp
|
||||
Searches the group database for a user with the given groupname in a
|
||||
thread-insecure manner.
|
||||
|
||||
*******************************************************************************/
|
||||
|
||||
#include <errno.h>
|
||||
#include <grp.h>
|
||||
#include <stdlib.h>
|
||||
|
||||
extern "C" struct group* getgrnam(const char* groupname)
|
||||
{
|
||||
static struct group result_object;
|
||||
static char* buf = NULL;
|
||||
static size_t buflen = 0;
|
||||
if ( !buf )
|
||||
{
|
||||
size_t new_buflen = 64;
|
||||
if ( !(buf = (char*) malloc(new_buflen)) )
|
||||
return NULL;
|
||||
buflen = new_buflen;
|
||||
}
|
||||
struct group* result;
|
||||
retry:
|
||||
int errnum = getgrnam_r(groupname, &result_object, buf, buflen, &result);
|
||||
if ( errnum == ERANGE )
|
||||
{
|
||||
size_t new_buflen = 2 * buflen;
|
||||
char* new_buf = (char*) realloc(buf, new_buflen);
|
||||
if ( !new_buf )
|
||||
return NULL;
|
||||
buf = new_buf;
|
||||
buflen = new_buflen;
|
||||
goto retry;
|
||||
}
|
||||
if ( errnum < 0 )
|
||||
return errno = errnum, (struct group*) NULL;
|
||||
return result;
|
||||
}
|
55
libc/grp/getgrnam_r.cpp
Normal file
55
libc/grp/getgrnam_r.cpp
Normal file
|
@ -0,0 +1,55 @@
|
|||
/*******************************************************************************
|
||||
|
||||
Copyright(C) Jonas 'Sortie' Termansen 2013.
|
||||
|
||||
This file is part of the Sortix C Library.
|
||||
|
||||
The Sortix C Library is free software: you can redistribute it and/or modify
|
||||
it under the terms of the GNU Lesser General Public License as published by
|
||||
the Free Software Foundation, either version 3 of the License, or (at your
|
||||
option) any later version.
|
||||
|
||||
The Sortix C 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 Lesser General Public
|
||||
License for more details.
|
||||
|
||||
You should have received a copy of the GNU Lesser General Public License
|
||||
along with the Sortix C Library. If not, see <http://www.gnu.org/licenses/>.
|
||||
|
||||
grp/getgrnam_r.cpp
|
||||
Searchs the group database for a group with the given groupname.
|
||||
|
||||
*******************************************************************************/
|
||||
|
||||
#include <errno.h>
|
||||
#include <grp.h>
|
||||
#include <stdio.h>
|
||||
#include <string.h>
|
||||
|
||||
extern "C"
|
||||
int getgrnam_r(const char* restrict groupname,
|
||||
struct group* restrict ret,
|
||||
char* restrict buf,
|
||||
size_t buflen,
|
||||
struct group** restrict ret_ptr)
|
||||
{
|
||||
if ( !ret_ptr )
|
||||
return errno = EINVAL;
|
||||
if ( !groupname || !ret || !buf )
|
||||
return *ret_ptr = NULL, errno = EINVAL;
|
||||
FILE* fgroup = opengr();
|
||||
if ( !fgroup )
|
||||
return *ret_ptr = NULL, errno;
|
||||
int errnum;
|
||||
while ( (errnum = fgetgrent_r(fgroup, ret, buf, buflen, ret_ptr)) == 0 &&
|
||||
*ret_ptr )
|
||||
{
|
||||
if ( strcmp((*ret_ptr)->gr_name, groupname) != 0 )
|
||||
continue;
|
||||
fclose(fgroup);
|
||||
return *ret_ptr = *ret_ptr, 0;
|
||||
}
|
||||
fclose(fgroup);
|
||||
return *ret_ptr = NULL, errnum ? errnum : errno = ENOGROUP;
|
||||
}
|
31
libc/grp/opengr.cpp
Normal file
31
libc/grp/opengr.cpp
Normal file
|
@ -0,0 +1,31 @@
|
|||
/*******************************************************************************
|
||||
|
||||
Copyright(C) Jonas 'Sortie' Termansen 2013.
|
||||
|
||||
This file is part of the Sortix C Library.
|
||||
|
||||
The Sortix C Library is free software: you can redistribute it and/or modify
|
||||
it under the terms of the GNU Lesser General Public License as published by
|
||||
the Free Software Foundation, either version 3 of the License, or (at your
|
||||
option) any later version.
|
||||
|
||||
The Sortix C 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 Lesser General Public
|
||||
License for more details.
|
||||
|
||||
You should have received a copy of the GNU Lesser General Public License
|
||||
along with the Sortix C Library. If not, see <http://www.gnu.org/licenses/>.
|
||||
|
||||
grp/opengr.cpp
|
||||
Opens the group database and returns a FILE to it.
|
||||
|
||||
*******************************************************************************/
|
||||
|
||||
#include <grp.h>
|
||||
#include <stdio.h>
|
||||
|
||||
extern "C" FILE* opengr(void)
|
||||
{
|
||||
return fopen("/etc/group", "r");
|
||||
}
|
34
libc/grp/setgrent.cpp
Normal file
34
libc/grp/setgrent.cpp
Normal file
|
@ -0,0 +1,34 @@
|
|||
/*******************************************************************************
|
||||
|
||||
Copyright(C) Jonas 'Sortie' Termansen 2013.
|
||||
|
||||
This file is part of the Sortix C Library.
|
||||
|
||||
The Sortix C Library is free software: you can redistribute it and/or modify
|
||||
it under the terms of the GNU Lesser General Public License as published by
|
||||
the Free Software Foundation, either version 3 of the License, or (at your
|
||||
option) any later version.
|
||||
|
||||
The Sortix C 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 Lesser General Public
|
||||
License for more details.
|
||||
|
||||
You should have received a copy of the GNU Lesser General Public License
|
||||
along with the Sortix C Library. If not, see <http://www.gnu.org/licenses/>.
|
||||
|
||||
grp/setgrent.cpp
|
||||
Rewinds the group database.
|
||||
|
||||
*******************************************************************************/
|
||||
|
||||
#include <grp.h>
|
||||
#include <stdio.h>
|
||||
|
||||
extern "C" void setgrent(void)
|
||||
{
|
||||
if ( __grp_file )
|
||||
fseeko(__grp_file, 0, SEEK_SET);
|
||||
else
|
||||
__grp_file = opengr();
|
||||
}
|
|
@ -31,21 +31,36 @@
|
|||
|
||||
__BEGIN_DECLS
|
||||
|
||||
@include(FILE.h)
|
||||
@include(gid_t.h)
|
||||
@include(uid_t.h)
|
||||
@include(size_t.h)
|
||||
|
||||
#define _GROUP_BUFFER_SIZE 64
|
||||
|
||||
struct group
|
||||
{
|
||||
char gr_name[_GROUP_BUFFER_SIZE];
|
||||
gid_t gr_gid;
|
||||
char** gr_mem;
|
||||
char* gr_name;
|
||||
char* gr_passwd;
|
||||
};
|
||||
|
||||
struct group* getgrgid(gid_t gid);
|
||||
struct group* getgrnam(const char* name);
|
||||
#if __is_sortix_libc
|
||||
extern FILE* __grp_file;
|
||||
#endif
|
||||
|
||||
void endgrent(void);
|
||||
struct group* fgetgrent(FILE*);
|
||||
int fgetgrent_r(FILE* __restrict, struct group* __restrict, char* __restrict,
|
||||
size_t, struct group** __restrict);
|
||||
struct group* getgrent(void);
|
||||
int getgrent_r(struct group* __restrict, char* __restrict, size_t,
|
||||
struct group** __restrict);
|
||||
struct group* getgrgid(gid_t);
|
||||
int getgrgid_r(gid_t, struct group* __restrict, char* __restrict, size_t,
|
||||
struct group** __restrict);
|
||||
struct group* getgrnam(const char*);
|
||||
int getgrnam_r(const char*, struct group*, char*, size_t, struct group**);
|
||||
FILE* opengr(void);
|
||||
void setgrent(void);
|
||||
|
||||
__END_DECLS
|
||||
|
||||
|
|
Loading…
Reference in a new issue