mirror of
https://github.com/torvalds/linux.git
synced 2024-11-29 15:41:36 +00:00
1843b4e057
Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/d8081e7528b25ad91f4154b6a3fd063e93c108ec.1450193761.git.jpoimboe@redhat.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
61 lines
1.9 KiB
C
61 lines
1.9 KiB
C
#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 */
|