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Add three options to 'ulimit' (#406)

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This patch adds a few extra options to the ulimit command (if the OS
supports them). These options are also present in Bash, although in ksh
additional long forms of each option are available:
  ulimit -k/--kqueues   This is the maximum number of kqueues.
  ulimit -P/--npts      This is the maximum number of pseudo-terminals.
  ulimit -R/--rttime    This is the time a real-time process can run
                        before blocking, in microseconds. When the
                        limit is exceeded, the process is sent SIGXCPU.

Other changes:
- bltins/ulimit.c: Change the formatting from sfprintf and increase the
  size of the tmp buffer to prevent text from being cut off in ulimit
  -a (this was required to add ulimit -R).
- data/limits.c: Add support for using microseconds as a unit.
This commit is contained in:
Johnothan King 2021-12-28 13:55:56 -08:00 • committed by Martijn Dekker
parent 8f24d4dc56
commit 8f9d1bec97
8 changed files with 53 additions and 8 deletions
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2
src/cmd/ksh93/include/version.h
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@ -21,7 +21,7 @@
#define SH_RELEASE_FORK "93u+m" /* only change if you develop a new ksh93 fork */
#define SH_RELEASE_SVER "1.0.0-beta.2" /* semantic version number: https://semver.org */
#define SH_RELEASE_DATE "2021-12-27" /* must be in this format for $((.sh.version)) */
#define SH_RELEASE_DATE "2021-12-28" /* must be in this format for $((.sh.version)) */
#define SH_RELEASE_CPYR "(c) 2020-2021 Contributors to ksh " SH_RELEASE_FORK
/* Scripts sometimes field-split ${.sh.version}, so don't change amount of whitespace. */