toybox: toys/toysh.c annotate

annotate toys/toysh.c @ 115:19b5567f0a1b

Add readlink, xreadlink(), and change xrealloc() to not fight the stupid compiler so much.

author	Rob Landley <rob@landley.net>
date	Sun, 29 Apr 2007 19:55:21 -0400
parents	7c77c6ec17ee
children	933766b0bd4b

rev	line source
2 67b517913e56 Infrastructure, first drop of toy shell, and a bit of work on df. landley@driftwood parents: diff changeset	1 /* vi: set sw=4 ts=4:
67b517913e56 Infrastructure, first drop of toy shell, and a bit of work on df. landley@driftwood parents: diff changeset	2 *
67b517913e56 Infrastructure, first drop of toy shell, and a bit of work on df. landley@driftwood parents: diff changeset	3 * toysh - toybox shell
67b517913e56 Infrastructure, first drop of toy shell, and a bit of work on df. landley@driftwood parents: diff changeset	4 *
67b517913e56 Infrastructure, first drop of toy shell, and a bit of work on df. landley@driftwood parents: diff changeset	5 * Copyright 2006 Rob Landley <rob@landley.net>
67b517913e56 Infrastructure, first drop of toy shell, and a bit of work on df. landley@driftwood parents: diff changeset	6 *
67b517913e56 Infrastructure, first drop of toy shell, and a bit of work on df. landley@driftwood parents: diff changeset	7 * The spec for this is at:
67b517913e56 Infrastructure, first drop of toy shell, and a bit of work on df. landley@driftwood parents: diff changeset	8 * http://www.opengroup.org/onlinepubs/009695399/utilities/xcu_chap02.html
67b517913e56 Infrastructure, first drop of toy shell, and a bit of work on df. landley@driftwood parents: diff changeset	9 *
67b517913e56 Infrastructure, first drop of toy shell, and a bit of work on df. landley@driftwood parents: diff changeset	10 * Although things like the bash man page are good to read too.
67b517913e56 Infrastructure, first drop of toy shell, and a bit of work on df. landley@driftwood parents: diff changeset	11 */
67b517913e56 Infrastructure, first drop of toy shell, and a bit of work on df. landley@driftwood parents: diff changeset	12
67b517913e56 Infrastructure, first drop of toy shell, and a bit of work on df. landley@driftwood parents: diff changeset	13 // Handle embedded NUL bytes in the command line.
67b517913e56 Infrastructure, first drop of toy shell, and a bit of work on df. landley@driftwood parents: diff changeset	14
67b517913e56 Infrastructure, first drop of toy shell, and a bit of work on df. landley@driftwood parents: diff changeset	15 #include "toys.h"
67b517913e56 Infrastructure, first drop of toy shell, and a bit of work on df. landley@driftwood parents: diff changeset	16
3 266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	17 // A single executable, its arguments, and other information we know about it.
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	18 #define TOYSH_FLAG_EXIT 1
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	19 #define TOYSH_FLAG_SUSPEND 2
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	20 #define TOYSH_FLAG_PIPE 4
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	21 #define TOYSH_FLAG_AND 8
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	22 #define TOYSH_FLAG_OR 16
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	23 #define TOYSH_FLAG_AMP 32
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	24 #define TOYSH_FLAG_SEMI 64
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	25 #define TOYSH_FLAG_PAREN 128
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	26
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	27 // What we know about a single process.
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	28 struct command {
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	29 struct command *next;
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	30 int flags; // exit, suspend, && \|\|
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	31 int pid; // pid (or exit code)
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	32 int argc;
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	33 char *argv[0];
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	34 };
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	35
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	36 // A collection of processes piped into/waiting on each other.
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	37 struct pipeline {
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	38 struct pipeline *next;
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	39 int job_id;
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	40 struct command *cmd;
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	41 char *cmdline; // Unparsed line for display purposes
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	42 int cmdlinelen; // How long is cmdline?
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	43 };
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	44
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	45 // Parse one word from the command line, appending one or more argv[] entries
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	46 // to struct command. Handles environment variable substitution and
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	47 // substrings. Returns pointer to next used byte, or NULL if it
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	48 // hit an ending token.
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	49 static char parse_word(char start, struct command **cmd)
2 67b517913e56 Infrastructure, first drop of toy shell, and a bit of work on df. landley@driftwood parents: diff changeset	50 {
3 266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	51 char *end;
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	52
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	53 // Detect end of line (and truncate line at comment)
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	54 if (CFG_TOYSH_PIPES && strchr("><&\|(;", *start)) return 0;
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	55
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	56 // Grab next word. (Add dequote and envvar logic here)
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	57 end = start;
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	58 while (end && !isspace(end)) end++;
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	59 (cmd)->argv[(cmd)->argc++] = xstrndup(start, end-start);
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	60
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	61 // Allocate more space if there's no room for NULL terminator.
2 67b517913e56 Infrastructure, first drop of toy shell, and a bit of work on df. landley@driftwood parents: diff changeset	62
3 266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	63 if (!((*cmd)->argc & 7))
115 19b5567f0a1b Add readlink, xreadlink(), and change xrealloc() to not fight the stupid Rob Landley <rob@landley.net> parents: 90 diff changeset	64 cmd=xrealloc(cmd,
3 266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	65 sizeof(struct command) + ((cmd)->argc+8)sizeof(char *));
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	66 (cmd)->argv[(cmd)->argc] = 0;
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	67 return end;
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	68 }
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	69
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	70 // Parse a line of text into a pipeline.
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	71 // Returns a pointer to the next line.
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	72
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	73 static char parse_pipeline(char cmdline, struct pipeline *line)
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	74 {
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	75 struct command **cmd = &(line->cmd);
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	76 char *start = line->cmdline = cmdline;
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	77
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	78 if (!cmdline) return 0;
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	79
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	80 if (CFG_TOYSH_JOBCTL) line->cmdline = cmdline;
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	81
2 67b517913e56 Infrastructure, first drop of toy shell, and a bit of work on df. landley@driftwood parents: diff changeset	82 // Parse command into argv[]
67b517913e56 Infrastructure, first drop of toy shell, and a bit of work on df. landley@driftwood parents: diff changeset	83 for (;;) {
67b517913e56 Infrastructure, first drop of toy shell, and a bit of work on df. landley@driftwood parents: diff changeset	84 char *end;
3 266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	85
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	86 // Skip leading whitespace and detect end of line.
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	87 while (isspace(*start)) start++;
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	88 if (!start \|\| start=='#') {
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	89 if (CFG_TOYSH_JOBCTL) line->cmdlinelen = start-cmdline;
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	90 return 0;
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	91 }
2 67b517913e56 Infrastructure, first drop of toy shell, and a bit of work on df. landley@driftwood parents: diff changeset	92
3 266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	93 // Allocate next command structure if necessary
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	94 if (!cmd) cmd = xzalloc(sizeof(struct command)+8sizeof(char ));
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	95
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	96 // Parse next argument and add the results to argv[]
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	97 end = parse_word(start, cmd);
2 67b517913e56 Infrastructure, first drop of toy shell, and a bit of work on df. landley@driftwood parents: diff changeset	98
3 266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	99 // If we hit the end of this command, how did it end?
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	100 if (!end) {
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	101 if (CFG_TOYSH_PIPES && *start) {
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	102 if (*start==';') {
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	103 start++;
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	104 break;
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	105 }
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	106 // handle \| & < > >> << \|\| &&
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	107 }
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	108 break;
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	109 }
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	110 start = end;
2 67b517913e56 Infrastructure, first drop of toy shell, and a bit of work on df. landley@driftwood parents: diff changeset	111 }
3 266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	112
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	113 if (CFG_TOYSH_JOBCTL) line->cmdlinelen = start-cmdline;
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	114
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	115 return start;
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	116 }
2 67b517913e56 Infrastructure, first drop of toy shell, and a bit of work on df. landley@driftwood parents: diff changeset	117
3 266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	118 // Execute the commands in a pipeline
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	119 static void run_pipeline(struct pipeline *line)
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	120 {
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	121 struct toy_list *tl;
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	122 struct command *cmd = line->cmd;
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	123 if (!cmd \|\| !cmd->argc) return;
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	124
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	125 tl = toy_find(cmd->argv[0]);
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	126 // Is this command a builtin that should run in this process?
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	127 if (tl && (tl->flags & TOYFLAG_NOFORK)) {
25 eb46bb5626cb New option parsing infrastructure (doesn't use getopt). Hook it up to Rob Landley <rob@landley.net> parents: 7 diff changeset	128 struct toy_context temp;
2 67b517913e56 Infrastructure, first drop of toy shell, and a bit of work on df. landley@driftwood parents: diff changeset	129
25 eb46bb5626cb New option parsing infrastructure (doesn't use getopt). Hook it up to Rob Landley <rob@landley.net> parents: 7 diff changeset	130 // This fakes lots of what toybox_main() does.
eb46bb5626cb New option parsing infrastructure (doesn't use getopt). Hook it up to Rob Landley <rob@landley.net> parents: 7 diff changeset	131 memcpy(&temp, &toys, sizeof(struct toy_context));
eb46bb5626cb New option parsing infrastructure (doesn't use getopt). Hook it up to Rob Landley <rob@landley.net> parents: 7 diff changeset	132 bzero(&toys, sizeof(struct toy_context));
3 266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	133 toy_init(tl, cmd->argv);
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	134 cmd->pid = tl->toy_main();
25 eb46bb5626cb New option parsing infrastructure (doesn't use getopt). Hook it up to Rob Landley <rob@landley.net> parents: 7 diff changeset	135 free(toys.optargs);
eb46bb5626cb New option parsing infrastructure (doesn't use getopt). Hook it up to Rob Landley <rob@landley.net> parents: 7 diff changeset	136 memcpy(&toys, &temp, sizeof(struct toy_context));
3 266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	137 } else {
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	138 int status;
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	139
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	140 cmd->pid = vfork();
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	141 if (!cmd->pid) xexec(cmd->argv);
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	142 else waitpid(cmd->pid, &status, 0);
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	143
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	144 if (CFG_TOYSH_FLOWCTL \|\| CFG_TOYSH_PIPES) {
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	145 if (WIFEXITED(status)) cmd->pid = WEXITSTATUS(status);
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	146 if (WIFSIGNALED(status)) cmd->pid = WTERMSIG(status);
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	147 }
2 67b517913e56 Infrastructure, first drop of toy shell, and a bit of work on df. landley@driftwood parents: diff changeset	148 }
3 266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	149
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	150 return;
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	151 }
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	152
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	153 // Free the contents of a command structure
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	154 static void free_cmd(void *data)
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	155 {
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	156 struct command cmd=(struct command )data;
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	157
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	158 while(cmd->argc) free(cmd->argv[--cmd->argc]);
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	159 }
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	160
2 67b517913e56 Infrastructure, first drop of toy shell, and a bit of work on df. landley@driftwood parents: diff changeset	161
3 266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	162 // Parse a command line and do what it says to do.
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	163 static void handle(char *command)
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	164 {
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	165 struct pipeline line;
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	166 char *start = command;
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	167
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	168 // Loop through commands in this line
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	169
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	170 for (;;) {
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	171
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	172 // Parse a group of connected commands
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	173
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	174 memset(&line,0,sizeof(struct pipeline));
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	175 start = parse_pipeline(start, &line);
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	176 if (!line.cmd) break;
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	177
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	178 // Run those commands
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	179
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	180 run_pipeline(&line);
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	181 llist_free(line.cmd, free_cmd);
266a462ed18c Next drop of toysh, plus more infratructure. landley@driftwood parents: 2 diff changeset	182 }
2 67b517913e56 Infrastructure, first drop of toy shell, and a bit of work on df. landley@driftwood parents: diff changeset	183 }
67b517913e56 Infrastructure, first drop of toy shell, and a bit of work on df. landley@driftwood parents: diff changeset	184
67b517913e56 Infrastructure, first drop of toy shell, and a bit of work on df. landley@driftwood parents: diff changeset	185 int cd_main(void)
67b517913e56 Infrastructure, first drop of toy shell, and a bit of work on df. landley@driftwood parents: diff changeset	186 {
7 fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices. landley@driftwood parents: 3 diff changeset	187 char *dest = toys.argv[1] ? toys.argv[1]: getenv("HOME");
2 67b517913e56 Infrastructure, first drop of toy shell, and a bit of work on df. landley@driftwood parents: diff changeset	188 if (chdir(dest)) error_exit("chdir %s",dest);
67b517913e56 Infrastructure, first drop of toy shell, and a bit of work on df. landley@driftwood parents: diff changeset	189 return 0;
67b517913e56 Infrastructure, first drop of toy shell, and a bit of work on df. landley@driftwood parents: diff changeset	190 }
67b517913e56 Infrastructure, first drop of toy shell, and a bit of work on df. landley@driftwood parents: diff changeset	191
67b517913e56 Infrastructure, first drop of toy shell, and a bit of work on df. landley@driftwood parents: diff changeset	192 int exit_main(void)
67b517913e56 Infrastructure, first drop of toy shell, and a bit of work on df. landley@driftwood parents: diff changeset	193 {
7 fc9c0503d5e2 Implement df. Add -Wall to build and fix up warnings. Add copyright notices. landley@driftwood parents: 3 diff changeset	194 exit(toys.argv[1] ? atoi(toys.argv[1]) : 0);
2 67b517913e56 Infrastructure, first drop of toy shell, and a bit of work on df. landley@driftwood parents: diff changeset	195 }
67b517913e56 Infrastructure, first drop of toy shell, and a bit of work on df. landley@driftwood parents: diff changeset	196
67b517913e56 Infrastructure, first drop of toy shell, and a bit of work on df. landley@driftwood parents: diff changeset	197 int toysh_main(void)
67b517913e56 Infrastructure, first drop of toy shell, and a bit of work on df. landley@driftwood parents: diff changeset	198 {
67b517913e56 Infrastructure, first drop of toy shell, and a bit of work on df. landley@driftwood parents: diff changeset	199 char *command=NULL;
67b517913e56 Infrastructure, first drop of toy shell, and a bit of work on df. landley@driftwood parents: diff changeset	200 FILE *f;
67b517913e56 Infrastructure, first drop of toy shell, and a bit of work on df. landley@driftwood parents: diff changeset	201
25 eb46bb5626cb New option parsing infrastructure (doesn't use getopt). Hook it up to Rob Landley <rob@landley.net> parents: 7 diff changeset	202 // Set up signal handlers and grab control of this tty.
eb46bb5626cb New option parsing infrastructure (doesn't use getopt). Hook it up to Rob Landley <rob@landley.net> parents: 7 diff changeset	203 if (CFG_TOYSH_TTY) {
eb46bb5626cb New option parsing infrastructure (doesn't use getopt). Hook it up to Rob Landley <rob@landley.net> parents: 7 diff changeset	204 if (isatty(0)) toys.optflags \|= 1;
eb46bb5626cb New option parsing infrastructure (doesn't use getopt). Hook it up to Rob Landley <rob@landley.net> parents: 7 diff changeset	205 }
2 67b517913e56 Infrastructure, first drop of toy shell, and a bit of work on df. landley@driftwood parents: diff changeset	206 f = toys.argv[1] ? xfopen(toys.argv[1], "r") : NULL;
67b517913e56 Infrastructure, first drop of toy shell, and a bit of work on df. landley@driftwood parents: diff changeset	207 if (command) handle(command);
67b517913e56 Infrastructure, first drop of toy shell, and a bit of work on df. landley@driftwood parents: diff changeset	208 else {
67b517913e56 Infrastructure, first drop of toy shell, and a bit of work on df. landley@driftwood parents: diff changeset	209 unsigned cmdlen=0;
67b517913e56 Infrastructure, first drop of toy shell, and a bit of work on df. landley@driftwood parents: diff changeset	210 for (;;) {
67b517913e56 Infrastructure, first drop of toy shell, and a bit of work on df. landley@driftwood parents: diff changeset	211 if (!f) putchar('$');
67b517913e56 Infrastructure, first drop of toy shell, and a bit of work on df. landley@driftwood parents: diff changeset	212 if (1 > getline(&command, &cmdlen, f ? : stdin)) break;
67b517913e56 Infrastructure, first drop of toy shell, and a bit of work on df. landley@driftwood parents: diff changeset	213 handle(command);
67b517913e56 Infrastructure, first drop of toy shell, and a bit of work on df. landley@driftwood parents: diff changeset	214 }
90 7c77c6ec17ee Add "make defconfig". Modify global options to start with CONFIG_TOYBOX_. Rob Landley <rob@landley.net> parents: 25 diff changeset	215 if (CFG_TOYBOX_FREE) free(command);
2 67b517913e56 Infrastructure, first drop of toy shell, and a bit of work on df. landley@driftwood parents: diff changeset	216 }
67b517913e56 Infrastructure, first drop of toy shell, and a bit of work on df. landley@driftwood parents: diff changeset	217
67b517913e56 Infrastructure, first drop of toy shell, and a bit of work on df. landley@driftwood parents: diff changeset	218 return 1;
67b517913e56 Infrastructure, first drop of toy shell, and a bit of work on df. landley@driftwood parents: diff changeset	219 }

Mercurial > hg > toybox

annotate toys/toysh.c @ 115:19b5567f0a1b