busybox.git/util-linux/chrt.c, branch master Unnamed repository; edit this file 'description' to name the repository. chrt: support passing `-p 0` to operate on self 2025-10-07T08:05:08+00:00 Denys Vlasenko vda.linux@googlemail.com 2025-10-07T06:39:54+00:00 3cc24609520e3b4141aed4dec0de9eee64b7bdf6 Specifying a PID of 0 for the -p option of chrt would previously result in a "number 0... not in range" error. Now, it means instead that the calling process (i.e. chrt itself) should be operated on; this is to be consistent with the behavior of util-linux's version of chrt. function old new delta chrt_main 462 474 +12 Signed-off-by: Zuo An <zuoan.penguin@gmail.com> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com> 
Specifying a PID of 0 for the -p option of chrt would previously result
in a "number 0... not in range" error. Now, it means instead that the
calling process (i.e. chrt itself) should be operated on; this is to be
consistent with the behavior of util-linux's version of chrt.

function                                             old     new   delta
chrt_main                                            462     474     +12

Signed-off-by: Zuo An <zuoan.penguin@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Update applet size estimates 2023-07-10T15:25:21+00:00 Denys Vlasenko vda.linux@googlemail.com 2023-07-10T15:25:21+00:00 5353df91cba7b397b9407701681708d0a1518df6 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com> 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
libbb: factor out fflush_stdout_and_exit(EXIT_SUCCESS) 2022-01-04T22:31:58+00:00 Denys Vlasenko vda.linux@googlemail.com 2022-01-04T22:31:58+00:00 31f45c1b369bee73843f7d791313423997618448 function old new delta fflush_stdout_and_exit_SUCCESS - 7 +7 xxd_main 890 888 -2 vlock_main 353 351 -2 uuencode_main 318 316 -2 uniq_main 427 425 -2 uname_main 250 248 -2 sort_main 853 851 -2 shuf_main 500 498 -2 route_main 238 236 -2 readlink_main 113 111 -2 nice_main 156 154 -2 last_main 957 955 -2 ipcs_main 960 958 -2 env_main 209 207 -2 chrt_main 464 462 -2 cal_main 921 919 -2 baseNUM_main 650 648 -2 ------------------------------------------------------------------------------ (add/remove: 1/0 grow/shrink: 0/16 up/down: 7/-32) Total: -25 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com> 
function                                             old     new   delta
fflush_stdout_and_exit_SUCCESS                         -       7      +7
xxd_main                                             890     888      -2
vlock_main                                           353     351      -2
uuencode_main                                        318     316      -2
uniq_main                                            427     425      -2
uname_main                                           250     248      -2
sort_main                                            853     851      -2
shuf_main                                            500     498      -2
route_main                                           238     236      -2
readlink_main                                        113     111      -2
nice_main                                            156     154      -2
last_main                                            957     955      -2
ipcs_main                                            960     958      -2
env_main                                             209     207      -2
chrt_main                                            464     462      -2
cal_main                                             921     919      -2
baseNUM_main                                         650     648      -2
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 0/16 up/down: 7/-32)            Total: -25 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
chrt: silence analyzer warning 2021-10-10T15:29:18+00:00 Bernhard Reutner-Fischer rep.dot.nop@gmail.com 2021-10-10T08:19:08+00:00 376b2ceff6b498f7f9ab719c0dd4811c2bbda2c6 warning: use of uninitialized value ‘priority’ [CWE-457] [-Wanalyzer-use-of-uninitialized-value] chrt_main 499 496 -3 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 0/1 up/down: 0/-3) Total: -3 bytes text data bss dec hex filename 972157 4235 1840 978232 eed38 busybox_old 972154 4235 1840 978229 eed35 busybox_unstripped Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com> 
warning: use of uninitialized value ‘priority’ [CWE-457] [-Wanalyzer-use-of-uninitialized-value]

chrt_main                                            499     496      -3
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/1 up/down: 0/-3)               Total: -3 bytes
   text	   data	    bss	    dec	    hex	filename
 972157	   4235	   1840	 978232	  eed38	busybox_old
 972154	   4235	   1840	 978229	  eed35	busybox_unstripped

Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
help text tweaks 2020-12-18T03:12:51+00:00 Denys Vlasenko vda.linux@googlemail.com 2020-12-18T03:12:51+00:00 a2f18d950a1a94e22fec78ee2d57f5cd3542551a function old new delta packed_usage 33570 33502 -68 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com> 
function                                             old     new   delta
packed_usage                                       33570   33502     -68

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
chrt: support for musl C library 2020-11-15T19:26:46+00:00 Christian Eggers ceggers@arri.de 2020-11-15T19:25:09+00:00 89f063b900edf8b38c9dc05953887cf09b121378 musl "implements" several sched_xxx() functions by returning ENOSYS. As an alternative, either pthread_(g|s)etschedparam() or direct syscalls can be used. References: https://git.kernel.org/pub/scm/utils/util-linux/util-linux.git/commit/schedutils/chrt.c?id=fcc3078754291d2f5121797eb91b364f8e24b2f1 References: http://git.musl-libc.org/cgit/musl/commit/src/sched/sched_setscheduler.c?id=1e21e78bf7a5c24c217446d8760be7b7188711c2 Signed-off-by: Christian Eggers <ceggers@arri.de> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com> 
musl "implements" several sched_xxx() functions by returning ENOSYS. As
an alternative, either pthread_(g|s)etschedparam() or direct syscalls
can be used.

References: https://git.kernel.org/pub/scm/utils/util-linux/util-linux.git/commit/schedutils/chrt.c?id=fcc3078754291d2f5121797eb91b364f8e24b2f1
References: http://git.musl-libc.org/cgit/musl/commit/src/sched/sched_setscheduler.c?id=1e21e78bf7a5c24c217446d8760be7b7188711c2
Signed-off-by: Christian Eggers <ceggers@arri.de>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
chrt: fix for SCHED_RESET_ON_FORK bit 2019-04-05T14:59:07+00:00 Denys Vlasenko vda.linux@googlemail.com 2019-04-05T14:59:07+00:00 43d09e79db91110e7ca09610efd0b62fce453b47 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com> 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
chrt: do not segfault if policy number is unknown 2019-04-05T10:03:48+00:00 Denys Vlasenko vda.linux@googlemail.com 2019-04-05T10:03:48+00:00 ae5ca6fc417161eb514103d3c2b38add18012760 While at it, improve help text function old new delta packed_usage 33319 33344 +25 policy_name - 22 +22 show_min_max 59 64 +5 chrt_main 432 429 -3 policies 72 - -72 ------------------------------------------------------------------------------ (add/remove: 1/1 grow/shrink: 2/1 up/down: 52/-75) Total: -23 bytes text data bss dec hex filename 982150 485 7296 989931 f1aeb busybox_old 982183 485 7296 989964 f1b0c busybox_unstripped Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com> 
While at it, improve help text

function                                             old     new   delta
packed_usage                                       33319   33344     +25
policy_name                                            -      22     +22
show_min_max                                          59      64      +5
chrt_main                                            432     429      -3
policies                                              72       -     -72
------------------------------------------------------------------------------
(add/remove: 1/1 grow/shrink: 2/1 up/down: 52/-75)            Total: -23 bytes
   text	   data	    bss	    dec	    hex	filename
 982150	    485	   7296	 989931	  f1aeb	busybox_old
 982183	    485	   7296	 989964	  f1b0c	busybox_unstripped

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
config: update size information 2018-12-28T02:20:17+00:00 Denys Vlasenko vda.linux@googlemail.com 2018-12-28T02:20:17+00:00 b097a84d62dcfcf201a695b54bcfafae70cac8a6 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com> 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
chrt: code shrink 2018-01-25T08:34:23+00:00 Denys Vlasenko vda.linux@googlemail.com 2018-01-25T08:34:23+00:00 a497231f537352c7ff7a80c07ef6191b00e7e30e function old new delta show_min_max 60 59 -1 policies 96 72 -24 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com> 
function                                             old     new   delta
show_min_max                                          60      59      -1
policies                                              96      72     -24

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>