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ash: sleep builtin with no arguments should not exit

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function                                             old     new   delta
sleep_main                                           116     143     +27
.rodata                                           105245  105268     +23
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(add/remove: 0/0 grow/shrink: 2/0 up/down: 50/0)               Total: 50 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko 2023-04-03 19:54:42 +02:00
parent 515adcc9f3
commit d661cb1977
2 changed files with 15 additions and 2 deletions
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15
coreutils/sleep.c
View File

@ -65,15 +65,28 @@ int sleep_main(int argc UNUSED_PARAM, char **argv)
{
duration_t duration;
/* Note: sleep_main may be directly called from ash as a builtin.
* This brings some complications:
* + we can't use xfunc here
* + we can't use bb_show_usage
* + applet_name can be the name of the shell
*/
++argv;
if (!*argv)
if (!*argv) {
/* Without this, bare "sleep" in ash shows _ash_ --help */
if (ENABLE_ASH_SLEEP && applet_name[0] != 's') {
bb_simple_error_msg("sleep: missing operand");
return EXIT_FAILURE;
}
bb_show_usage();
}
/* GNU sleep accepts "inf", "INF", "infinity" and "INFINITY" */
if (strncasecmp(argv[0], "inf", 3) == 0)
for (;;)
sleep(INT_MAX);
//FIXME: in ash, "sleep 123qwerty" as a builtin aborts the shell
#if ENABLE_FEATURE_FANCY_SLEEP
duration = 0;
do {

2
procps/kill.c
View File

@ -85,8 +85,8 @@
* This brings some complications:
*
* + we can't use xfunc here
* + we can't use applet_name
* + we can't use bb_show_usage
* + applet_name can be the name of the shell
* (doesn't apply for killall[5], still should be careful b/c NOFORK)
*
* kill %n gets translated into kill ' -<process group>' by shell (note space!)