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Diffstat (limited to 'lib/process/process.h')
-rw-r--r-- | lib/process/process.h | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/lib/process/process.h b/lib/process/process.h new file mode 100644 index 0000000..9e2a2d1 --- /dev/null +++ b/lib/process/process.h @@ -0,0 +1,76 @@ +/* + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ +#ifndef PROCESS_H +#define PROCESS_H + +#include <stdbool.h> +#include <sys/types.h> + +#include <list/list.h> +#include <waiter/waiter.h> + +struct process; +struct procset; + +typedef void (*process_exit_cb)(struct process *); + +struct process { + /* caller-provided configuration */ + const char *path; + const char **argv; + bool keep_stdout; + process_exit_cb exit_cb; + void *data; + + /* runtime data */ + pid_t pid; + int stdout_len; + char *stdout_buf; + + /* post-execution information */ + int exit_status; +}; + +/* Process management system init. process_init must be called before + * process_create. The pointer returned can be talloc_free()-ed, or can be + * automatically freed through destruction of the ctx talloc tree. + */ +struct procset *process_init(void *ctx, struct waitset *set); + +struct process *process_create(void *ctx); + +/* process_release: release our reference to the process, but potentially + * leave it running. When the process exits, associated resources will + * be deallocated. + */ +void process_release(struct process *process); + +/* Synchronous interface. These functions will all block while waiting for + * the process to exit. + */ +int process_run_sync(struct process *process); +int process_run_simple_argv(void *ctx, const char *argv[]); +int process_run_simple(void *ctx, const char *name, ...) + __attribute__((sentinel(0))); + +/* Asynchronous interface. When a process is run with process_run_async, the + * function returns without wait()ing for the child process to exit. If the + * process' exit_cb member is set, that callback will be invoked when the + * process exits. + */ +int process_run_async(struct process *process); + +void process_stop_async(struct process *process); +#endif /* PROCESS_H */ |