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      1 /* gspawn.h - Process launching
      2  *
      3  *  Copyright 2000 Red Hat, Inc.
      4  *
      5  * GLib is free software; you can redistribute it and/or
      6  * modify it under the terms of the GNU Lesser General Public License as
      7  * published by the Free Software Foundation; either version 2 of the
      8  * License, or (at your option) any later version.
      9  *
     10  * GLib is distributed in the hope that it will be useful,
     11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
     12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     13  * Lesser General Public License for more details.
     14  *
     15  * You should have received a copy of the GNU Lesser General Public
     16  * License along with GLib; see the file COPYING.LIB.  If not, write
     17  * to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
     18  * Boston, MA 02111-1307, USA.
     19  */
     20 
     21 #if defined(G_DISABLE_SINGLE_INCLUDES) && !defined (__GLIB_H_INSIDE__) && !defined (GLIB_COMPILATION)
     22 #error "Only <glib.h> can be included directly."
     23 #endif
     24 
     25 #ifndef __G_SPAWN_H__
     26 #define __G_SPAWN_H__
     27 
     28 #include <glib/gerror.h>
     29 
     30 G_BEGIN_DECLS
     31 
     32 /* I'm not sure I remember our proposed naming convention here. */
     33 #define G_SPAWN_ERROR g_spawn_error_quark ()
     34 
     35 typedef enum
     36 {
     37   G_SPAWN_ERROR_FORK,   /* fork failed due to lack of memory */
     38   G_SPAWN_ERROR_READ,   /* read or select on pipes failed */
     39   G_SPAWN_ERROR_CHDIR,  /* changing to working dir failed */
     40   G_SPAWN_ERROR_ACCES,  /* execv() returned EACCES */
     41   G_SPAWN_ERROR_PERM,   /* execv() returned EPERM */
     42   G_SPAWN_ERROR_2BIG,   /* execv() returned E2BIG */
     43   G_SPAWN_ERROR_NOEXEC, /* execv() returned ENOEXEC */
     44   G_SPAWN_ERROR_NAMETOOLONG, /* ""  "" ENAMETOOLONG */
     45   G_SPAWN_ERROR_NOENT,       /* ""  "" ENOENT */
     46   G_SPAWN_ERROR_NOMEM,       /* ""  "" ENOMEM */
     47   G_SPAWN_ERROR_NOTDIR,      /* ""  "" ENOTDIR */
     48   G_SPAWN_ERROR_LOOP,        /* ""  "" ELOOP   */
     49   G_SPAWN_ERROR_TXTBUSY,     /* ""  "" ETXTBUSY */
     50   G_SPAWN_ERROR_IO,          /* ""  "" EIO */
     51   G_SPAWN_ERROR_NFILE,       /* ""  "" ENFILE */
     52   G_SPAWN_ERROR_MFILE,       /* ""  "" EMFLE */
     53   G_SPAWN_ERROR_INVAL,       /* ""  "" EINVAL */
     54   G_SPAWN_ERROR_ISDIR,       /* ""  "" EISDIR */
     55   G_SPAWN_ERROR_LIBBAD,      /* ""  "" ELIBBAD */
     56   G_SPAWN_ERROR_FAILED       /* other fatal failure, error->message
     57                               * should explain
     58                               */
     59 } GSpawnError;
     60 
     61 typedef void (* GSpawnChildSetupFunc) (gpointer user_data);
     62 
     63 typedef enum
     64 {
     65   G_SPAWN_LEAVE_DESCRIPTORS_OPEN = 1 << 0,
     66   G_SPAWN_DO_NOT_REAP_CHILD      = 1 << 1,
     67   /* look for argv[0] in the path i.e. use execvp() */
     68   G_SPAWN_SEARCH_PATH            = 1 << 2,
     69   /* Dump output to /dev/null */
     70   G_SPAWN_STDOUT_TO_DEV_NULL     = 1 << 3,
     71   G_SPAWN_STDERR_TO_DEV_NULL     = 1 << 4,
     72   G_SPAWN_CHILD_INHERITS_STDIN   = 1 << 5,
     73   G_SPAWN_FILE_AND_ARGV_ZERO     = 1 << 6
     74 } GSpawnFlags;
     75 
     76 GQuark g_spawn_error_quark (void);
     77 
     78 #ifdef G_OS_WIN32
     79 #define g_spawn_async g_spawn_async_utf8
     80 #define g_spawn_async_with_pipes g_spawn_async_with_pipes_utf8
     81 #define g_spawn_sync g_spawn_sync_utf8
     82 #define g_spawn_command_line_sync g_spawn_command_line_sync_utf8
     83 #define g_spawn_command_line_async g_spawn_command_line_async_utf8
     84 #endif
     85 
     86 gboolean g_spawn_async (const gchar           *working_directory,
     87                         gchar                **argv,
     88                         gchar                **envp,
     89                         GSpawnFlags            flags,
     90                         GSpawnChildSetupFunc   child_setup,
     91                         gpointer               user_data,
     92                         GPid                  *child_pid,
     93                         GError               **error);
     94 
     95 
     96 /* Opens pipes for non-NULL standard_output, standard_input, standard_error,
     97  * and returns the parent's end of the pipes.
     98  */
     99 gboolean g_spawn_async_with_pipes (const gchar          *working_directory,
    100                                    gchar               **argv,
    101                                    gchar               **envp,
    102                                    GSpawnFlags           flags,
    103                                    GSpawnChildSetupFunc  child_setup,
    104                                    gpointer              user_data,
    105                                    GPid                 *child_pid,
    106                                    gint                 *standard_input,
    107                                    gint                 *standard_output,
    108                                    gint                 *standard_error,
    109                                    GError              **error);
    110 
    111 
    112 /* If standard_output or standard_error are non-NULL, the full
    113  * standard output or error of the command will be placed there.
    114  */
    115 
    116 gboolean g_spawn_sync         (const gchar          *working_directory,
    117                                gchar               **argv,
    118                                gchar               **envp,
    119                                GSpawnFlags           flags,
    120                                GSpawnChildSetupFunc  child_setup,
    121                                gpointer              user_data,
    122                                gchar               **standard_output,
    123                                gchar               **standard_error,
    124                                gint                 *exit_status,
    125                                GError              **error);
    126 
    127 gboolean g_spawn_command_line_sync  (const gchar          *command_line,
    128                                      gchar               **standard_output,
    129                                      gchar               **standard_error,
    130                                      gint                 *exit_status,
    131                                      GError              **error);
    132 gboolean g_spawn_command_line_async (const gchar          *command_line,
    133                                      GError              **error);
    134 
    135 void g_spawn_close_pid (GPid pid);
    136 
    137 G_END_DECLS
    138 
    139 #endif /* __G_SPAWN_H__ */
    140