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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667/* SPDX-License-Identifier: GPL-2.0 */#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; int finish_result; 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; unsigned finished:1; void (*preexec_cb)(void); /* If set, call function in child rather than doing an exec. */ int (*no_exec_cmd)(struct child_process *process);};
int start_command(struct child_process *);int check_if_command_finished(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 4int run_command_v_opt(const char **argv, int opt);
#endif /* __SUBCMD_RUN_COMMAND_H */