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-rw-r--r--gpxe/src/core/exec.c251
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diff --git a/gpxe/src/core/exec.c b/gpxe/src/core/exec.c
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index 6c16aa44..00000000
--- a/gpxe/src/core/exec.c
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@@ -1,251 +0,0 @@
-/*
- * Copyright (C) 2006 Michael Brown <mbrown@fensystems.co.uk>.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of the
- * License, or any later version.
- *
- * This program 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
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-FILE_LICENCE ( GPL2_OR_LATER );
-
-#include <stdint.h>
-#include <string.h>
-#include <stdlib.h>
-#include <stdio.h>
-#include <ctype.h>
-#include <unistd.h>
-#include <getopt.h>
-#include <errno.h>
-#include <assert.h>
-#include <gpxe/tables.h>
-#include <gpxe/command.h>
-#include <gpxe/settings.h>
-
-/** @file
- *
- * Command execution
- *
- */
-
-/* Avoid dragging in getopt.o unless a command really uses it */
-int optind;
-int nextchar;
-
-/**
- * Execute command
- *
- * @v command Command name
- * @v argv Argument list
- * @ret rc Command exit status
- *
- * Execute the named command. Unlike a traditional POSIX execv(),
- * this function returns the exit status of the command.
- */
-int execv ( const char *command, char * const argv[] ) {
- struct command *cmd;
- int argc;
-
- /* Count number of arguments */
- for ( argc = 0 ; argv[argc] ; argc++ ) {}
-
- /* Sanity checks */
- if ( ! command ) {
- DBG ( "No command\n" );
- return -EINVAL;
- }
- if ( ! argc ) {
- DBG ( "%s: empty argument list\n", command );
- return -EINVAL;
- }
-
- /* Reset getopt() library ready for use by the command. This
- * is an artefact of the POSIX getopt() API within the context
- * of Etherboot; see the documentation for reset_getopt() for
- * details.
- */
- reset_getopt();
-
- /* Hand off to command implementation */
- for_each_table_entry ( cmd, COMMANDS ) {
- if ( strcmp ( command, cmd->name ) == 0 )
- return cmd->exec ( argc, ( char ** ) argv );
- }
-
- printf ( "%s: command not found\n", command );
- return -ENOEXEC;
-}
-
-/**
- * Expand variables within command line
- *
- * @v command Command line
- * @ret expcmd Expanded command line
- *
- * The expanded command line is allocated with malloc() and the caller
- * must eventually free() it.
- */
-static char * expand_command ( const char *command ) {
- char *expcmd;
- char *start;
- char *end;
- char *head;
- char *name;
- char *tail;
- int setting_len;
- int new_len;
- char *tmp;
-
- /* Obtain temporary modifiable copy of command line */
- expcmd = strdup ( command );
- if ( ! expcmd )
- return NULL;
-
- /* Expand while expansions remain */
- while ( 1 ) {
-
- head = expcmd;
-
- /* Locate opener */
- start = strstr ( expcmd, "${" );
- if ( ! start )
- break;
- *start = '\0';
- name = ( start + 2 );
-
- /* Locate closer */
- end = strstr ( name, "}" );
- if ( ! end )
- break;
- *end = '\0';
- tail = ( end + 1 );
-
- /* Determine setting length */
- setting_len = fetchf_named_setting ( name, NULL, 0 );
- if ( setting_len < 0 )
- setting_len = 0; /* Treat error as empty setting */
-
- /* Read setting into temporary buffer */
- {
- char setting_buf[ setting_len + 1 ];
-
- setting_buf[0] = '\0';
- fetchf_named_setting ( name, setting_buf,
- sizeof ( setting_buf ) );
-
- /* Construct expanded string and discard old string */
- tmp = expcmd;
- new_len = asprintf ( &expcmd, "%s%s%s",
- head, setting_buf, tail );
- free ( tmp );
- if ( new_len < 0 )
- return NULL;
- }
- }
-
- return expcmd;
-}
-
-/**
- * Split command line into argv array
- *
- * @v args Command line
- * @v argv Argument array to populate, or NULL
- * @ret argc Argument count
- *
- * Splits the command line into whitespace-delimited arguments. If @c
- * argv is non-NULL, any whitespace in the command line will be
- * replaced with NULs.
- */
-static int split_args ( char *args, char * argv[] ) {
- int argc = 0;
-
- while ( 1 ) {
- /* Skip over any whitespace / convert to NUL */
- while ( isspace ( *args ) ) {
- if ( argv )
- *args = '\0';
- args++;
- }
- /* Check for end of line */
- if ( ! *args )
- break;
- /* We have found the start of the next argument */
- if ( argv )
- argv[argc] = args;
- argc++;
- /* Skip to start of next whitespace, if any */
- while ( *args && ! isspace ( *args ) ) {
- args++;
- }
- }
- return argc;
-}
-
-/**
- * Execute command line
- *
- * @v command Command line
- * @ret rc Command exit status
- *
- * Execute the named command and arguments.
- */
-int system ( const char *command ) {
- char *args;
- int argc;
- int rc = 0;
-
- /* Perform variable expansion */
- args = expand_command ( command );
- if ( ! args )
- return -ENOMEM;
-
- /* Count arguments */
- argc = split_args ( args, NULL );
-
- /* Create argv array and execute command */
- if ( argc ) {
- char * argv[argc + 1];
-
- split_args ( args, argv );
- argv[argc] = NULL;
-
- if ( argv[0][0] != '#' )
- rc = execv ( argv[0], argv );
- }
-
- free ( args );
- return rc;
-}
-
-/**
- * The "echo" command
- *
- * @v argc Argument count
- * @v argv Argument list
- * @ret rc Exit code
- */
-static int echo_exec ( int argc, char **argv ) {
- int i;
-
- for ( i = 1 ; i < argc ; i++ ) {
- printf ( "%s%s", ( ( i == 1 ) ? "" : " " ), argv[i] );
- }
- printf ( "\n" );
- return 0;
-}
-
-/** "echo" command */
-struct command echo_command __command = {
- .name = "echo",
- .exec = echo_exec,
-};