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*: introduce and use xfork() and xvfork()

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function                                             old     new   delta
launch_helper                                        170     169      -1
setup_heredoc                                        312     302     -10
handle_dir_common                                    367     354     -13
expand_vars_to_list                                 2456    2443     -13
open_transformer                                      89      74     -15
data_extract_to_command                              439     423     -16
do_ipaddr                                           1406    1389     -17
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/7 up/down: 0/-85)             Total: -85 bytes

Signed-off-by: Pascal Bellard <pascal.bellard@ads-lu.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Pascal Bellard
2010-07-04 15:32:38 +02:00
committed by Denys Vlasenko
parent 243d1757d7
commit 926031b764
21 changed files with 56 additions and 95 deletions
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15
shell/hush.c
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@@ -3208,15 +3208,11 @@ static void setup_heredoc(struct redir_struct *redir)
#if !BB_MMU
to_free = NULL;
#endif
pid = vfork();
if (pid < 0)
bb_perror_msg_and_die("vfork");
pid = xvfork();
if (pid == 0) {
/* child */
disable_restore_tty_pgrp_on_exit();
pid = BB_MMU ? fork() : vfork();
if (pid < 0)
bb_perror_msg_and_die(BB_MMU ? "fork" : "vfork");
pid = BB_MMU ? xfork() : xvfork();
if (pid != 0)
_exit(0);
/* grandchild */
@@ -4450,7 +4446,7 @@ static NOINLINE int run_pipe(struct pipe *pi)
argv_expanded = NULL;
if (command->pid < 0) { /* [v]fork failed */
/* Clearly indicate, was it fork or vfork */
bb_perror_msg(BB_MMU ? "fork" : "vfork");
bb_perror_msg(BB_MMU ? "vfork"+1 : "vfork");
} else {
pi->alive_cmds++;
#if ENABLE_HUSH_JOB
@@ -5586,10 +5582,7 @@ static FILE *generate_stream_from_string(const char *s, pid_t *pid_p)
# endif
xpipe(channel);
pid = BB_MMU ? fork() : vfork();
if (pid < 0)
bb_perror_msg_and_die(BB_MMU ? "fork" : "vfork");
pid = BB_MMU ? xfork() : xvfork();
if (pid == 0) { /* child */
disable_restore_tty_pgrp_on_exit();
/* Process substitution is not considered to be usual