Package: coreutils Version: 8.32-4+b1 Severity: minor Dear Maintainer,
Quoth upstream NEWS:
-- >8 --
* Noteworthy changes in release 8.31 (2019-03-10) [stable]
** New features
env now supports '--default-signal[=SIG]', '--ignore-signal[=SIG]', and
'--block-signal[=SIG], to setup signal handling before executing a program.
env now supports '--list-signal-handling' to indicate non-default
signal handling before executing a program.
-- >8 --
Quoth env(1):
-- >8 --
--block-signal[=SIG]
block delivery of SIG signal(s) to COMMAND
--default-signal[=SIG]
reset handling of SIG signal(s) to the default
--ignore-signal[=SIG]
set handling of SIG signals(s) to do nothing
SIG may be a signal name like 'PIPE', or a signal number like '13'.
Without SIG, all known signals are included. Multiple signals can be
comma-separated.
-- >8 --
However:
-- >8 --
$ env -v --block-signal=1 ls /dev/null
signal HUP (1) mask set to BLOCK
executing: ls
arg[0]= ‘ls’
arg[1]= ‘/dev/null’
/dev/null
$ env -v --block-signal ls /dev/null 2>&1 | paste - - - -
signal HUP (1) mask set to BLOCK signal INT (2) mask set to BLOCK
signal QUIT (3) mask set to BLOCK signal ILL (4) mask set to BLOCK
signal TRAP (5) mask set to BLOCK signal ABRT (6) mask set to BLOCK
signal BUS (7) mask set to BLOCK signal FPE (8) mask set to BLOCK
signal KILL (9) mask set to BLOCK signal USR1 (10) mask set to BLOCK
signal SEGV (11) mask set to BLOCK signal USR2 (12) mask set to BLOCK
signal PIPE (13) mask set to BLOCK signal ALRM (14) mask set to BLOCK
signal TERM (15) mask set to BLOCK signal STKFLT (16) mask set to BLOCK
signal CHLD (17) mask set to BLOCK signal CONT (18) mask set to BLOCK
signal STOP (19) mask set to BLOCK signal TSTP (20) mask set to BLOCK
signal TTIN (21) mask set to BLOCK signal TTOU (22) mask set to BLOCK
signal URG (23) mask set to BLOCK signal XCPU (24) mask set to BLOCK
signal XFSZ (25) mask set to BLOCK signal VTALRM (26) mask set to BLOCK
signal PROF (27) mask set to BLOCK signal WINCH (28) mask set to BLOCK
signal POLL (29) mask set to BLOCK signal PWR (30) mask set to BLOCK
signal SYS (31) mask set to BLOCK signal RTMIN (34) mask set to BLOCK
signal RTMIN+1 (35) mask set to BLOCK signal RTMIN+2 (36) mask set to BLOCK
signal RTMIN+3 (37) mask set to BLOCK signal RTMIN+4 (38) mask set to BLOCK
signal RTMIN+5 (39) mask set to BLOCK signal RTMIN+6 (40) mask set to BLOCK
signal RTMIN+7 (41) mask set to BLOCK signal RTMIN+8 (42) mask set to BLOCK
signal RTMIN+9 (43) mask set to BLOCK signal RTMIN+10 (44) mask set to BLOCK
signal RTMIN+11 (45) mask set to BLOCK signal RTMIN+12 (46) mask set to BLOCK
signal RTMIN+13 (47) mask set to BLOCK signal RTMIN+14 (48) mask set to BLOCK
signal RTMIN+15 (49) mask set to BLOCK signal RTMAX-14 (50) mask set to BLOCK
signal RTMAX-13 (51) mask set to BLOCK signal RTMAX-12 (52) mask set to BLOCK
signal RTMAX-11 (53) mask set to BLOCK signal RTMAX-10 (54) mask set to BLOCK
signal RTMAX-9 (55) mask set to BLOCK signal RTMAX-8 (56) mask set to BLOCK
signal RTMAX-7 (57) mask set to BLOCK signal RTMAX-6 (58) mask set to BLOCK
signal RTMAX-5 (59) mask set to BLOCK signal RTMAX-4 (60) mask set to BLOCK
signal RTMAX-3 (61) mask set to BLOCK signal RTMAX-2 (62) mask set to BLOCK
signal RTMAX-1 (63) mask set to BLOCK signal RTMAX (64) mask set to BLOCK
executing: ls arg[0]= ‘ls’
arg[1]= ‘/dev/null’ /dev/null
$ env -v --block-signal= ls /dev/null
executing: ls
arg[0]= ‘ls’
arg[1]= ‘/dev/null’
/dev/null
-- >8 --
Precedent dictates that an empty argument should be refused (right?),
practicality suggests that it's likely a mistake
(since, again, it does nothing).
and the manual says it's forbidden
(clumsily using SIG and prose to describe signal[,signal]...).
Best,
наб
-- System Information:
Debian Release: 11.4
APT prefers stable-updates
APT policy: (500, 'stable-updates'), (500, 'stable-security'), (500,
'stable-debug'), (500, 'stable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386
Kernel: Linux 5.10.0-16-amd64 (SMP w/24 CPU threads)
Kernel taint flags: TAINT_PROPRIETARY_MODULE, TAINT_FIRMWARE_WORKAROUND,
TAINT_OOT_MODULE, TAINT_UNSIGNED_MODULE
Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8),
LANGUAGE=en_GB:en
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled
Versions of packages coreutils depends on:
ii libacl1 2.2.53-10
ii libattr1 1:2.4.48-6
ii libc6 2.31-13+deb11u3
ii libgmp10 2:6.2.1+dfsg-1+deb11u1
ii libselinux1 3.1-3
coreutils recommends no packages.
coreutils suggests no packages.
-- no debconf information
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