• add -u option (POSIX: unbuffered ⇒ nop) to the built-in cat
• PIPESTATUS now supported (like bash 2) whose last member may actually differ from $? since the latter may not be the result of a pipeline partial command • add regression tests, documentation, etc.
This commit is contained in:
tg
parent
36d41ed9ee
commit
0b57abd4d3
29
check.t
29
check.t
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@ -1,4 +1,4 @@
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# $MirOS: src/bin/mksh/check.t,v 1.408 2011/02/13 21:13:05 tg Exp $
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# $MirOS: src/bin/mksh/check.t,v 1.409 2011/02/18 22:26:06 tg Exp $
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# $OpenBSD: bksl-nl.t,v 1.2 2001/01/28 23:04:56 niklas Exp $
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# $OpenBSD: history.t,v 1.5 2001/01/28 23:04:56 niklas Exp $
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# $OpenBSD: read.t,v 1.3 2003/03/10 03:48:16 david Exp $
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@ -25,7 +25,7 @@
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# http://www.research.att.com/~gsf/public/ifs.sh
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expected-stdout:
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@(#)MIRBSD KSH R39 2011/02/13
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@(#)MIRBSD KSH R39 2011/02/18
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description:
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Check version of shell.
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stdin:
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@ -69,8 +69,9 @@ name: selftest-direct-builtin-call
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description:
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Check that direct builtin calls work
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stdin:
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ln -s "$__progname" cat
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ln -s "$__progname" echo
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./echo -c 'echo foo'
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./echo -c 'echo foo' | ./cat -u
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expected-stdout:
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-c echo foo
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---
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@ -5244,6 +5245,28 @@ expected-stdout:
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200 hi
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300 hi
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---
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name: pipeline-3
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description:
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Check that PIPESTATUS does what it's supposed to
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stdin:
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echo 1 $PIPESTATUS .
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echo 2 ${PIPESTATUS[0]} .
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echo 3 ${PIPESTATUS[1]} .
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(echo x; exit 12) | (cat; exit 23) | (cat; exit 42)
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echo 5 $? , $PIPESTATUS , ${PIPESTATUS[0]} , ${PIPESTATUS[1]} , ${PIPESTATUS[2]} , ${PIPESTATUS[3]} .
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echo 6 ${PIPESTATUS[0]} .
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set | fgrep PIPESTATUS
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echo 8 $(set | fgrep PIPESTATUS) .
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expected-stdout:
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1 0 .
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2 0 .
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3 .
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x
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5 42 , 12 , 12 , 23 , 42 , .
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6 0 .
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PIPESTATUS[0]=0
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8 PIPESTATUS[0]=0 PIPESTATUS[1]=0 .
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---
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name: persist-history-1
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description:
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Check if persistent history saving works
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15
exec.c
15
exec.c
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@ -22,7 +22,7 @@
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#include "sh.h"
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__RCSID("$MirOS: src/bin/mksh/exec.c,v 1.86 2011/02/11 01:18:16 tg Exp $");
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__RCSID("$MirOS: src/bin/mksh/exec.c,v 1.87 2011/02/18 22:26:08 tg Exp $");
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#ifndef MKSH_DEFAULT_EXECSHELL
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#define MKSH_DEFAULT_EXECSHELL "/bin/sh"
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@ -153,6 +153,9 @@ execute(struct op * volatile t,
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memset(e->savefd, 0, NUFILE * sizeof(short));
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}
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/* mark for replacement later (unless TPIPE) */
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vp_pipest->flag |= INT_L;
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/* do redirection, to be restored in quitenv() */
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if (t->ioact != NULL)
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for (iowp = t->ioact; *iowp != NULL; iowp++) {
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@ -207,7 +210,7 @@ execute(struct op * volatile t,
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/* no need to re-restore this */
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e->savefd[1] = 0;
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/* Let exchild() close 0 in parent, after fork, before wait */
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i = exchild(t, flags | XPCLOSE, xerrok, 0);
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i = exchild(t, flags | XPCLOSE | XPIPEST, xerrok, 0);
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if (!(flags&XBGND) && !(flags&XXCOM))
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rv = i;
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break;
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@ -449,6 +452,12 @@ execute(struct op * volatile t,
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}
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Break:
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exstat = rv;
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if (vp_pipest->flag & INT_L) {
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unset(vp_pipest, 1);
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vp_pipest->flag = DEFINED | ISSET | INTEGER | RDONLY |
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ARRAY | INT_U;
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vp_pipest->val.i = rv;
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}
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/* restores IO */
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quitenv(NULL);
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@ -570,6 +579,8 @@ comexec(struct op *t, struct tbl * volatile tp, const char **ap,
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* in theory, we could allow -u, but that would
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* mean to use ksh_getopt here and possibly ad-
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* ded complexity and more code and isn't worth
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* additional hassle (and the builtin must call
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* ksh_getopt already but can't come back here)
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*/
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if (ap[1] && ap[1][0] == '-' && ap[1][1] != '\0' &&
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/* argument, begins with -, is not - or -- */
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22
funcs.c
22
funcs.c
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@ -38,7 +38,7 @@
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#endif
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#endif
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__RCSID("$MirOS: src/bin/mksh/funcs.c,v 1.171 2011/02/13 21:13:06 tg Exp $");
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__RCSID("$MirOS: src/bin/mksh/funcs.c,v 1.172 2011/02/18 22:26:08 tg Exp $");
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#if HAVE_KILLPG
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/*
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@ -3599,7 +3599,7 @@ c_realpath(const char **wp)
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int
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c_cat(const char **wp)
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{
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int fd = STDIN_FILENO, rv = 0;
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int fd = STDIN_FILENO, rv;
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ssize_t n, w;
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const char *fn = "<stdin>";
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char *buf, *cp;
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@ -3611,11 +3611,19 @@ c_cat(const char **wp)
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return (1);
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}
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/* skip argv[0] */
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++wp;
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if (wp[0] && !strcmp(wp[0], "--"))
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/* skip "--" (options separator) */
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++wp;
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/* parse options: POSIX demands we support "-u" as no-op */
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while ((rv = ksh_getopt(wp, &builtin_opt, "u")) != -1) {
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switch (rv) {
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case 'u':
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/* we already operate unbuffered */
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break;
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default:
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bi_errorf(T_synerr);
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return (1);
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}
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}
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wp += builtin_opt.optind;
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rv = 0;
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do {
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if (*wp) {
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70
jobs.c
70
jobs.c
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@ -22,7 +22,7 @@
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#include "sh.h"
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__RCSID("$MirOS: src/bin/mksh/jobs.c,v 1.74 2011/01/30 01:35:34 tg Exp $");
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__RCSID("$MirOS: src/bin/mksh/jobs.c,v 1.75 2011/02/18 22:26:09 tg Exp $");
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#if HAVE_KILLPG
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#define mksh_killpg killpg
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@ -97,6 +97,7 @@ struct job {
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#define JW_INTERRUPT 0x01 /* ^C will stop the wait */
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#define JW_ASYNCNOTIFY 0x02 /* asynchronous notification during wait ok */
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#define JW_STOPPEDWAIT 0x04 /* wait even if job stopped */
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#define JW_PIPEST 0x08 /* want PIPESTATUS */
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/* Error codes for j_lookup() */
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#define JL_OK 0
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@ -207,6 +208,19 @@ j_init(void)
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tty_init(true, true);
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}
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static int
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proc_errorlevel(Proc *p)
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{
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switch (p->state) {
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case PEXITED:
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return (WEXITSTATUS(p->status));
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case PSIGNALLED:
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return (128 + WTERMSIG(p->status));
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default:
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return (0);
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}
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}
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/* job cleanup before shell exit */
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void
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j_exit(void)
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@ -349,7 +363,7 @@ exchild(struct op *t, int flags,
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/* for pipelines */
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static Proc *last_proc;
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int rv = 0, forksleep;
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int rv = 0, forksleep, jwflags = JW_NONE;
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#ifndef MKSH_NOPROSPECTOFWORK
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sigset_t omask;
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#endif
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@ -357,6 +371,11 @@ exchild(struct op *t, int flags,
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Job *j;
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pid_t cldpid;
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if (flags & XPIPEST) {
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flags &= ~XPIPEST;
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jwflags |= JW_PIPEST;
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}
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if (flags & XEXEC)
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/*
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* Clear XFORK|XPCLOSE|XCCLOSE|XCOPROC|XPIPEO|XPIPEI|XXCOM|XBGND
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@ -543,7 +562,7 @@ exchild(struct op *t, int flags,
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shf_flush(shl_out);
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}
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} else
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rv = j_waitj(j, JW_NONE, "jw:last proc");
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rv = j_waitj(j, jwflags, "jw:last proc");
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}
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#ifndef MKSH_NOPROSPECTOFWORK
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@ -1158,6 +1177,38 @@ j_waitj(Job *j,
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j_systime = j->systime;
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rv = j->status;
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if ((flags & JW_PIPEST) && (j->proc_list != NULL)) {
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size_t num = 0;
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Proc *p = j->proc_list;
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struct tbl *vp;
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unset(vp_pipest, 1);
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vp = vp_pipest;
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vp->flag = DEFINED | ISSET | INTEGER | RDONLY | ARRAY | INT_U;
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goto got_array;
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while (p != NULL) {
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{
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struct tbl *vq;
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/* strlen(vp_pipest->name) == 10 */
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vq = alloc(offsetof(struct tbl, name[0]) + 11,
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vp_pipest->areap);
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memset(vq, 0, offsetof(struct tbl, name[0]));
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memcpy(vq->name, vp_pipest->name, 11);
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vp->u.array = vq;
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vp = vq;
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}
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vp->areap = vp_pipest->areap;
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vp->ua.index = ++num;
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vp->flag = DEFINED | ISSET | INTEGER | RDONLY |
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ARRAY | INT_U | AINDEX;
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got_array:
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vp->val.i = proc_errorlevel(p);
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p = p->next;
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}
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}
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if (!(flags & JW_ASYNCNOTIFY)
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#ifndef MKSH_UNEMPLOYED
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&& (!Flag(FMONITOR) || j->state != PSTOPPED)
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@ -1295,18 +1346,7 @@ check_job(Job *j)
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jstate = p->state;
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}
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j->state = jstate;
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switch (j->last_proc->state) {
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case PEXITED:
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j->status = WEXITSTATUS(j->last_proc->status);
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break;
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case PSIGNALLED:
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j->status = 128 + WTERMSIG(j->last_proc->status);
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break;
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default:
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j->status = 0;
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break;
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}
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j->status = proc_errorlevel(j->last_proc);
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/*
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* Note when co-process dies: can't be done in j_wait() nor
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3
main.c
3
main.c
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@ -33,7 +33,7 @@
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#include <locale.h>
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#endif
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__RCSID("$MirOS: src/bin/mksh/main.c,v 1.176 2011/02/11 01:18:18 tg Exp $");
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__RCSID("$MirOS: src/bin/mksh/main.c,v 1.177 2011/02/18 22:26:10 tg Exp $");
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extern char **environ;
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@ -364,6 +364,7 @@ main(int argc, const char *argv[])
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vp->flag |= INT_U;
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setint((vp = global("RANDOM")), rndsetup());
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vp->flag |= INT_U;
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setint((vp_pipest = global("PIPESTATUS")), 0);
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/* Set this before parsing arguments */
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Flag(FPRIVILEGED) = kshuid != ksheuid || kshgid != kshegid;
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21
mksh.1
21
mksh.1
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@ -1,4 +1,4 @@
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.\" $MirOS: src/bin/mksh/mksh.1,v 1.250 2011/02/11 01:18:19 tg Exp $
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.\" $MirOS: src/bin/mksh/mksh.1,v 1.251 2011/02/18 22:26:11 tg Exp $
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.\" $OpenBSD: ksh.1,v 1.138 2010/09/20 07:41:17 jmc Exp $
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.\"-
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.\" Copyright © 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009,
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@ -72,7 +72,7 @@
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.\" with -mandoc, it might implement .Mx itself, but we want to
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.\" use our own definition. And .Dd must come *first*, always.
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.\"
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.Dd $Mdocdate: February 11 2011 $
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.Dd $Mdocdate: February 18 2011 $
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.\"
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.\" Check which macro package we use
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.\"
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@ -1672,7 +1672,7 @@ arguments or splitting arguments with spaces.
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.El
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.Pp
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The following parameters are set and/or used by the shell:
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.Bl -tag -width "EXECSHELL"
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.Bl -tag -width "PIPESTATUS"
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.It Ev _ No (underscore)
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When an external command is executed by the shell, this parameter is set in the
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environment of the new process to the path of the executed command.
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@ -1825,6 +1825,9 @@ colon, or two adjacent colons, is treated as a
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(the current directory).
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.It Ev PGRP
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The process ID of the shell's process group leader.
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.It Ev PIPESTATUS
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An array containing the errorlevel (exit status) codes,
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one by one, of the last pipeline run in the foreground.
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.It Ev PPID
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The process ID of the shell's parent.
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.It Ev PS1
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@ -2995,19 +2998,23 @@ Execute the built-in command
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.Pp
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.It Xo
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.Ic cat
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.Op Fl \-
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.Op Fl u
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.Op Ar
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.Xc
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Read files sequentially, in command line order, and write them to
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standard output.
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If
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If a
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.Ar file
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is a single dash
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.Pq Sq -
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or absent, read from standard input.
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If any options are given, an external
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.Xr cat 1
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utility is invoked instead.
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utility is invoked instead if called from the shell.
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For direct builtin calls, the
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.Tn POSIX
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.Fl u
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option is supported as a no-op.
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.Pp
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.It Xo
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.Ic cd
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@ -4695,7 +4702,7 @@ Impose a limit of
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processes that can be run by the user at any one time.
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.It Fl q Ar n
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Limit the size of
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.Px
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.Tn POSIX
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message queues to
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.Ar n
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bytes.
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8
sh.h
8
sh.h
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@ -154,9 +154,9 @@
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#endif
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#ifdef EXTERN
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__RCSID("$MirOS: src/bin/mksh/sh.h,v 1.431 2011/02/13 21:13:08 tg Exp $");
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__RCSID("$MirOS: src/bin/mksh/sh.h,v 1.432 2011/02/18 22:26:13 tg Exp $");
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#endif
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#define MKSH_VERSION "R39 2011/02/13"
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#define MKSH_VERSION "R39 2011/02/18"
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#ifndef MKSH_INCLUDES_ONLY
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@ -577,6 +577,7 @@ extern struct env {
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EXTERN pid_t procpid; /* PID of executing process */
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EXTERN int exstat; /* exit status */
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EXTERN int subst_exstat; /* exit status of last $(..)/`..` */
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EXTERN struct tbl *vp_pipest; /* global PIPESTATUS array */
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EXTERN short trap_exstat; /* exit status before running a trap */
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EXTERN uint8_t trap_nested; /* running nested traps */
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EXTERN uint8_t shell_flags[FNFLAGS];
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@ -948,7 +949,7 @@ struct tbl { /* table item */
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#define LCASEV BIT(17) /* convert to lower case */
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#define UCASEV_AL BIT(18) /* convert to upper case / autoload function */
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#define INT_U BIT(19) /* unsigned integer */
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#define INT_L BIT(20) /* long integer (no-op) */
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#define INT_L BIT(20) /* long integer (no-op but used as magic) */
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#define IMPORT BIT(21) /* flag to typeset(): no arrays, must have = */
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#define LOCAL_COPY BIT(22) /* with LOCAL - copy attrs from existing var */
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#define EXPRINEVAL BIT(23) /* contents currently being evaluated */
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@ -1162,6 +1163,7 @@ struct ioword {
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#define XERROK BIT(8) /* non-zero exit ok (for set -e) */
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#define XCOPROC BIT(9) /* starting a co-process */
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#define XTIME BIT(10) /* timing TCOM command */
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#define XPIPEST BIT(11) /* want PIPESTATUS */
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/*
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* flags to control expansion of words (assumed by t->evalflags to fit
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