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John Kacur8b40f522009-09-24 18:02:18 +02001#ifndef __PERF_RUN_COMMAND_H
2#define __PERF_RUN_COMMAND_H
Ingo Molnar07800602009-04-20 15:00:56 +02003
4enum {
5 ERR_RUN_COMMAND_FORK = 10000,
6 ERR_RUN_COMMAND_EXEC,
7 ERR_RUN_COMMAND_PIPE,
8 ERR_RUN_COMMAND_WAITPID,
9 ERR_RUN_COMMAND_WAITPID_WRONG_PID,
10 ERR_RUN_COMMAND_WAITPID_SIGNAL,
11 ERR_RUN_COMMAND_WAITPID_NOEXIT,
12};
13#define IS_RUN_COMMAND_ERR(x) (-(x) >= ERR_RUN_COMMAND_FORK)
14
15struct child_process {
16 const char **argv;
17 pid_t pid;
18 /*
19 * Using .in, .out, .err:
20 * - Specify 0 for no redirections (child inherits stdin, stdout,
21 * stderr from parent).
22 * - Specify -1 to have a pipe allocated as follows:
23 * .in: returns the writable pipe end; parent writes to it,
24 * the readable pipe end becomes child's stdin
25 * .out, .err: returns the readable pipe end; parent reads from
26 * it, the writable pipe end becomes child's stdout/stderr
27 * The caller of start_command() must close the returned FDs
28 * after it has completed reading from/writing to it!
29 * - Specify > 0 to set a channel to a particular FD as follows:
30 * .in: a readable FD, becomes child's stdin
31 * .out: a writable FD, becomes child's stdout/stderr
32 * .err > 0 not supported
33 * The specified FD is closed by start_command(), even in case
34 * of errors!
35 */
36 int in;
37 int out;
38 int err;
39 const char *dir;
40 const char *const *env;
41 unsigned no_stdin:1;
42 unsigned no_stdout:1;
43 unsigned no_stderr:1;
44 unsigned perf_cmd:1; /* if this is to be perf sub-command */
45 unsigned stdout_to_stderr:1;
46 void (*preexec_cb)(void);
47};
48
49int start_command(struct child_process *);
50int finish_command(struct child_process *);
51int run_command(struct child_process *);
52
Ingo Molnar07800602009-04-20 15:00:56 +020053#define RUN_COMMAND_NO_STDIN 1
54#define RUN_PERF_CMD 2 /*If this is to be perf sub-command */
55#define RUN_COMMAND_STDOUT_TO_STDERR 4
56int run_command_v_opt(const char **argv, int opt);
57
John Kacur8b40f522009-09-24 18:02:18 +020058#endif /* __PERF_RUN_COMMAND_H */