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ash: optional sleep builtin

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function                                             old     new   delta
sleepcmd                                               -      10     +10
builtintab                                           352     360      +8
.rodata                                           105264  105271      +7
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(add/remove: 1/0 grow/shrink: 2/0 up/down: 25/0)               Total: 25 bytes

Signed-off-by: Shawn Landden <shawnlandden@tutanota.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Shawn Landden 2022-08-27 19:56:21 +02:00 committed by Denys Vlasenko
parent d432049f28
commit 58598eb709
4 changed files with 19 additions and 0 deletions
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1
coreutils/sleep.c
View File

@ -37,6 +37,7 @@
//applet:IF_SLEEP(APPLET(sleep, BB_DIR_BIN, BB_SUID_DROP))
//kbuild:lib-$(CONFIG_SLEEP) += sleep.o
//kbuild:lib-$(CONFIG_ASH_SLEEP) += sleep.o
/* BB_AUDIT SUSv3 compliant */
/* BB_AUDIT GNU issues -- fancy version matches except args must be ints. */

1
include/libbb.h
View File

@ -1510,6 +1510,7 @@ int ash_main(int argc, char** argv) IF_SHELL_ASH(MAIN_EXTERNALLY_VISIBLE);
int hush_main(int argc, char** argv) IF_SHELL_HUSH(MAIN_EXTERNALLY_VISIBLE);
/* If shell needs them, they exist even if not enabled as applets */
int echo_main(int argc, char** argv) IF_ECHO(MAIN_EXTERNALLY_VISIBLE);
int sleep_main(int argc, char **argv) IF_SLEEP(MAIN_EXTERNALLY_VISIBLE);
int printf_main(int argc, char **argv) IF_PRINTF(MAIN_EXTERNALLY_VISIBLE);
int test_main(int argc, char **argv)
#if ENABLE_TEST || ENABLE_TEST1 || ENABLE_TEST2

6
libbb/duration.c
View File

@ -76,6 +76,12 @@ void FAST_FUNC sleep_for_duration(duration_t duration)
ts.tv_sec = duration;
ts.tv_nsec = (duration - ts.tv_sec) * 1000000000;
}
/* NB: if ENABLE_ASH_SLEEP, we end up here if "sleep N"
* is run in ash. ^C will still work, because ash's signal handler
* does not return (it longjumps), the below loop
* will not continue looping.
* (This wouldn't work in hush)
*/
do {
errno = 0;
nanosleep(&ts, &ts);

11
shell/ash.c
View File

@ -134,6 +134,11 @@
//config: default y
//config: depends on SHELL_ASH
//config:
//config:config ASH_SLEEP
//config: bool "sleep builtin"
//config: default y
//config: depends on SHELL_ASH
//config:
//config:config ASH_HELP
//config: bool "help builtin"
//config: default y
@ -10155,6 +10160,9 @@ static int FAST_FUNC printfcmd(int argc, char **argv) { return printf_main(argc,
#if ENABLE_ASH_TEST || BASH_TEST2
static int FAST_FUNC testcmd(int argc, char **argv) { return test_main(argc, argv); }
#endif
#if ENABLE_ASH_SLEEP
static int FAST_FUNC sleepcmd(int argc, char **argv) { return sleep_main(argc, argv); }
#endif
/* Keep these in proper order since it is searched via bsearch() */
static const struct builtincmd builtintab[] = {
@ -10217,6 +10225,9 @@ static const struct builtincmd builtintab[] = {
{ BUILTIN_SPEC_REG "return" , returncmd },
{ BUILTIN_SPEC_REG "set" , setcmd },
{ BUILTIN_SPEC_REG "shift" , shiftcmd },
#if ENABLE_ASH_SLEEP
{ BUILTIN_REGULAR "sleep" , sleepcmd },
#endif
#if BASH_SOURCE
{ BUILTIN_SPEC_REG "source" , dotcmd },
#endif