#ifndef __SUBCMD_RUN_COMMAND_H
#define __SUBCMD_RUN_COMMAND_H

#include <unistd.h>

enum {
	ERR_RUN_COMMAND_FORK = 10000,
	ERR_RUN_COMMAND_EXEC,
	ERR_RUN_COMMAND_PIPE,
	ERR_RUN_COMMAND_WAITPID,
	ERR_RUN_COMMAND_WAITPID_WRONG_PID,
	ERR_RUN_COMMAND_WAITPID_SIGNAL,
	ERR_RUN_COMMAND_WAITPID_NOEXIT,
};
#define IS_RUN_COMMAND_ERR(x) (-(x) >= ERR_RUN_COMMAND_FORK)

struct child_process {
	const char **argv;
	pid_t pid;
	/*
	 * Using .in, .out, .err:
	 * - Specify 0 for no redirections (child inherits stdin, stdout,
	 *   stderr from parent).
	 * - Specify -1 to have a pipe allocated as follows:
	 *     .in: returns the writable pipe end; parent writes to it,
	 *          the readable pipe end becomes child's stdin
	 *     .out, .err: returns the readable pipe end; parent reads from
	 *          it, the writable pipe end becomes child's stdout/stderr
	 *   The caller of start_command() must close the returned FDs
	 *   after it has completed reading from/writing to it!
	 * - Specify > 0 to set a channel to a particular FD as follows:
	 *     .in: a readable FD, becomes child's stdin
	 *     .out: a writable FD, becomes child's stdout/stderr
	 *     .err > 0 not supported
	 *   The specified FD is closed by start_command(), even in case
	 *   of errors!
	 */
	int in;
	int out;
	int err;
	const char *dir;
	const char *const *env;
	unsigned no_stdin:1;
	unsigned no_stdout:1;
	unsigned no_stderr:1;
	unsigned exec_cmd:1; /* if this is to be external sub-command */
	unsigned stdout_to_stderr:1;
	void (*preexec_cb)(void);
};

int start_command(struct child_process *);
int finish_command(struct child_process *);
int run_command(struct child_process *);

#define RUN_COMMAND_NO_STDIN 1
#define RUN_EXEC_CMD	     2	/*If this is to be external sub-command */
#define RUN_COMMAND_STDOUT_TO_STDERR 4
int run_command_v_opt(const char **argv, int opt);

#endif /* __SUBCMD_RUN_COMMAND_H */
e-remove&amp;id=5c228d63f963bd7e20b6a9b06e93272093e98628'>tree</a><a href='/cgit.cgi/linux/net-next.git/commit/net/bluetooth/af_bluetooth.c?h=nds-private-remove&amp;id=5c228d63f963bd7e20b6a9b06e93272093e98628'>commit</a><a href='/cgit.cgi/linux/net-next.git/diff/net/bluetooth/af_bluetooth.c?h=nds-private-remove&amp;id=5c228d63f963bd7e20b6a9b06e93272093e98628'>diff</a></td><td class='form'><form class='right' method='get' action='/cgit.cgi/linux/net-next.git/log/net/bluetooth/af_bluetooth.c'>
<input type='hidden' name='h' value='nds-private-remove'/><input type='hidden' name='id' value='5c228d63f963bd7e20b6a9b06e93272093e98628'/><select name='qt'>
<option value='grep'>log msg</option>
<option value='author'>author</option>
<option value='committer'>committer</option>
<option value='range'>range</option>
</select>
<input class='txt' type='search' size='10' name='q' value=''/>
<input type='submit' value='search'/>
</form>
</td></tr></table>
<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/log/?h=nds-private-remove&amp;id=5c228d63f963bd7e20b6a9b06e93272093e98628'>root</a>/<a href='/cgit.cgi/linux/net-next.git/log/net?h=nds-private-remove&amp;id=5c228d63f963bd7e20b6a9b06e93272093e98628'>net</a>/<a href='/cgit.cgi/linux/net-next.git/log/net/bluetooth?h=nds-private-remove&amp;id=5c228d63f963bd7e20b6a9b06e93272093e98628'>bluetooth</a>/<a href='/cgit.cgi/linux/net-next.git/log/net/bluetooth/af_bluetooth.c?h=nds-private-remove&amp;id=5c228d63f963bd7e20b6a9b06e93272093e98628'>af_bluetooth.c</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/cgit.cgi/linux/net-next.git/log/net/bluetooth/af_bluetooth.c?h=nds-private-remove&amp;id=5c228d63f963bd7e20b6a9b06e93272093e98628&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th><th class='left'>Files</th><th class='left'>Lines</th></tr>