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-rw-r--r--src/funcs.c315
1 files changed, 185 insertions, 130 deletions
diff --git a/src/funcs.c b/src/funcs.c
index 0d2aec3..ab6e3b7 100644
--- a/src/funcs.c
+++ b/src/funcs.c
@@ -1,12 +1,12 @@
-/* $OpenBSD: c_ksh.c,v 1.34 2013/12/17 16:37:05 deraadt Exp $ */
-/* $OpenBSD: c_sh.c,v 1.45 2014/08/27 08:26:04 jmc Exp $ */
+/* $OpenBSD: c_ksh.c,v 1.37 2015/09/10 22:48:58 nicm Exp $ */
+/* $OpenBSD: c_sh.c,v 1.46 2015/07/20 20:46:24 guenther Exp $ */
/* $OpenBSD: c_test.c,v 1.18 2009/03/01 20:11:06 otto Exp $ */
/* $OpenBSD: c_ulimit.c,v 1.19 2013/11/28 10:33:37 sobrado Exp $ */
/*-
* Copyright (c) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009,
- * 2010, 2011, 2012, 2013, 2014, 2015
- * Thorsten Glaser <tg@mirbsd.org>
+ * 2010, 2011, 2012, 2013, 2014, 2015, 2016
+ * mirabilos <m@mirbsd.org>
*
* Provided that these terms and disclaimer and all copyright notices
* are retained or reproduced in an accompanying document, permission
@@ -38,7 +38,7 @@
#endif
#endif
-__RCSID("$MirOS: src/bin/mksh/funcs.c,v 1.280 2015/07/09 20:52:39 tg Exp $");
+__RCSID("$MirOS: src/bin/mksh/funcs.c,v 1.293 2016/01/20 21:34:11 tg Exp $");
#if HAVE_KILLPG
/*
@@ -103,7 +103,7 @@ const struct builtin mkshbuiltins[] = {
{"cd", c_cd},
/* dash compatibility hack */
{"chdir", c_cd},
- {"command", c_command},
+ {Tcommand, c_command},
{"*=continue", c_brkcont},
{"echo", c_print},
{"*=eval", c_eval},
@@ -127,6 +127,7 @@ const struct builtin mkshbuiltins[] = {
{"*=return", c_exitreturn},
{Tsgset, c_set},
{"*=shift", c_shift},
+ {"=source", c_dot},
#if !defined(MKSH_UNEMPLOYED) && HAVE_GETSID
{"suspend", c_suspend},
#endif
@@ -277,20 +278,18 @@ static void s_put(int);
int
c_print(const char **wp)
{
-#define PO_NL BIT(0) /* print newline */
-#define PO_EXPAND BIT(1) /* expand backslash sequences */
-#define PO_PMINUSMINUS BIT(2) /* print a -- argument */
-#define PO_HIST BIT(3) /* print to history instead of stdout */
-#define PO_COPROC BIT(4) /* printing to coprocess: block SIGPIPE */
int fd = 1, c;
- int flags = PO_EXPAND | PO_NL;
- const char *s, *emsg;
+ const char *s;
XString xs;
char *xp;
+ /* print newline; expand backslash sequences */
+ bool po_nl = true, po_exp = true;
+ /* print to history instead of file descriptor / stdout */
+ bool po_hist = false;
if (wp[0][0] == 'e') {
- /* echo builtin */
- wp++;
+ /* "echo" builtin */
+ ++wp;
#ifdef MKSH_MIDNIGHTBSD01ASH_COMPAT
if (Flag(FSH)) {
/*
@@ -298,7 +297,7 @@ c_print(const char **wp)
* one that supports -e but does not enable it by
* default
*/
- flags = PO_NL;
+ po_exp = false;
}
#endif
if (Flag(FPOSIX) ||
@@ -308,14 +307,14 @@ c_print(const char **wp)
Flag(FAS_BUILTIN)) {
/* Debian Policy 10.4 compliant "echo" builtin */
if (*wp && !strcmp(*wp, "-n")) {
- /* we recognise "-n" only as the first arg */
- flags = 0;
- wp++;
- } else
- /* otherwise, we print everything as-is */
- flags = PO_NL;
+ /* recognise "-n" only as the first arg */
+ po_nl = false;
+ ++wp;
+ }
+ /* print everything as-is */
+ po_exp = false;
} else {
- int nflags = flags;
+ bool new_exp = po_exp, new_nl = po_nl;
/**
* a compromise between sysV and BSD echo commands:
@@ -328,62 +327,65 @@ c_print(const char **wp)
* quences are enabled by default.
*/
- while ((s = *wp) && *s == '-' && s[1]) {
- while (*++s)
- if (*s == 'n')
- nflags &= ~PO_NL;
- else if (*s == 'e')
- nflags |= PO_EXPAND;
- else if (*s == 'E')
- nflags &= ~PO_EXPAND;
- else
- /*
- * bad option: don't use
- * nflags, print argument
- */
- break;
-
- if (*s)
- break;
- wp++;
- flags = nflags;
+ print_tradparse_arg:
+ if ((s = *wp) && *s++ == '-' && *s) {
+ print_tradparse_ch:
+ switch ((c = *s++)) {
+ case 'E':
+ new_exp = false;
+ goto print_tradparse_ch;
+ case 'e':
+ new_exp = true;
+ goto print_tradparse_ch;
+ case 'n':
+ new_nl = false;
+ goto print_tradparse_ch;
+ case '\0':
+ po_exp = new_exp;
+ po_nl = new_nl;
+ ++wp;
+ goto print_tradparse_arg;
+ }
}
}
} else {
- int optc;
- const char *opts = "Rnprsu,";
-
- while ((optc = ksh_getopt(wp, &builtin_opt, opts)) != -1)
- switch (optc) {
- case 'R':
- /* fake BSD echo command */
- flags |= PO_PMINUSMINUS;
- flags &= ~PO_EXPAND;
- opts = "ne";
- break;
+ /* "print" builtin */
+ const char *opts = "npRrsu,";
+ const char *emsg;
+ /* print a "--" argument */
+ bool po_pminusminus = false;
+
+ while ((c = ksh_getopt(wp, &builtin_opt, opts)) != -1)
+ switch (c) {
case 'e':
- flags |= PO_EXPAND;
+ po_exp = true;
break;
case 'n':
- flags &= ~PO_NL;
+ po_nl = false;
break;
case 'p':
if ((fd = coproc_getfd(W_OK, &emsg)) < 0) {
- bi_errorf("%s: %s", "-p", emsg);
+ bi_errorf("-p: %s", emsg);
return (1);
}
break;
+ case 'R':
+ /* fake BSD echo command */
+ po_pminusminus = true;
+ po_exp = false;
+ opts = "en";
+ break;
case 'r':
- flags &= ~PO_EXPAND;
+ po_exp = false;
break;
case 's':
- flags |= PO_HIST;
+ po_hist = true;
break;
case 'u':
if (!*(s = builtin_opt.optarg))
fd = 0;
else if ((fd = check_fd(s, W_OK, &emsg)) < 0) {
- bi_errorf("%s: %s: %s", "-u", s, emsg);
+ bi_errorf("-u%s: %s", s, emsg);
return (1);
}
break;
@@ -392,22 +394,23 @@ c_print(const char **wp)
}
if (!(builtin_opt.info & GI_MINUSMINUS)) {
- /* treat a lone - like -- */
+ /* treat a lone "-" like "--" */
if (wp[builtin_opt.optind] &&
ksh_isdash(wp[builtin_opt.optind]))
builtin_opt.optind++;
- } else if (flags & PO_PMINUSMINUS)
- builtin_opt.optind--;
+ } else if (po_pminusminus)
+ builtin_opt.optind--;
wp += builtin_opt.optind;
}
Xinit(xs, xp, 128, ATEMP);
- while (*wp != NULL) {
+ if (*wp != NULL) {
+ print_read_arg:
s = *wp;
while ((c = *s++) != '\0') {
Xcheck(xs, xp);
- if ((flags & PO_EXPAND) && c == '\\') {
+ if (po_exp && c == '\\') {
s_ptr = s;
c = unbksl(false, s_get, s_put);
s = s_ptr;
@@ -415,11 +418,11 @@ c_print(const char **wp)
/* rejected by generic function */
switch ((c = *s++)) {
case 'c':
- flags &= ~PO_NL;
+ po_nl = false;
/* AT&T brain damage */
continue;
case '\0':
- s--;
+ --s;
c = '\\';
break;
default:
@@ -430,25 +433,31 @@ c_print(const char **wp)
char ts[4];
ts[utf_wctomb(ts, c - 0x100)] = 0;
- for (c = 0; ts[c]; ++c)
+ c = 0;
+ do {
Xput(xs, xp, ts[c]);
+ } while (ts[++c]);
continue;
}
}
Xput(xs, xp, c);
}
- if (*++wp != NULL)
+ if (*++wp != NULL) {
Xput(xs, xp, ' ');
+ goto print_read_arg;
+ }
}
- if (flags & PO_NL)
+ if (po_nl)
Xput(xs, xp, '\n');
- if (flags & PO_HIST) {
+ c = 0;
+ if (po_hist) {
Xput(xs, xp, '\0');
histsave(&source->line, Xstring(xs, xp), HIST_STORE, false);
Xfree(xs, xp);
} else {
- int len = Xlength(xs, xp);
+ size_t len = Xlength(xs, xp);
+ bool po_coproc = false;
int opipe = 0;
/*
@@ -458,30 +467,36 @@ c_print(const char **wp)
* not enough).
*/
if (coproc.write >= 0 && coproc.write == fd) {
- flags |= PO_COPROC;
+ po_coproc = true;
opipe = block_pipe();
}
- for (s = Xstring(xs, xp); len > 0; ) {
- if ((c = write(fd, s, len)) < 0) {
- if (flags & PO_COPROC)
- restore_pipe(opipe);
+
+ s = Xstring(xs, xp);
+ while (len > 0) {
+ ssize_t nwritten;
+
+ if ((nwritten = write(fd, s, len)) < 0) {
if (errno == EINTR) {
- /* allow user to ^C out */
+ if (po_coproc)
+ restore_pipe(opipe);
+ /* give the user a chance to ^C out */
intrcheck();
- if (flags & PO_COPROC)
+ /* interrupted, try again */
+ if (po_coproc)
opipe = block_pipe();
continue;
}
- return (1);
+ c = 1;
+ break;
}
- s += c;
- len -= c;
+ s += nwritten;
+ len -= nwritten;
}
- if (flags & PO_COPROC)
+ if (po_coproc)
restore_pipe(opipe);
}
- return (0);
+ return (c);
}
static int
@@ -1305,7 +1320,8 @@ c_fgbg(const char **wp)
rv = j_resume(*wp, bg);
else
rv = j_resume("%%", bg);
- return (bg ? 0 : rv);
+ /* fg returns $? of the job unless POSIX */
+ return ((bg | Flag(FPOSIX)) ? 0 : rv);
}
#endif
@@ -1374,7 +1390,7 @@ c_kill(const char **wp)
for (; wp[i]; i++) {
if (!bi_getn(wp[i], &n))
return (1);
-#if (ksh_NSIG < 128)
+#if (ksh_NSIG <= 128)
if (n > 128 && n < 128 + ksh_NSIG)
n -= 128;
#endif
@@ -1383,9 +1399,16 @@ c_kill(const char **wp)
else
shprintf("%d\n", n);
}
+ } else if (Flag(FPOSIX)) {
+ n = 1;
+ while (n < ksh_NSIG) {
+ shf_puts(sigtraps[n].name, shl_stdout);
+ shf_putc(++n == ksh_NSIG ? '\n' : ' ',
+ shl_stdout);
+ }
} else {
ssize_t w, mess_cols = 0, mess_octs = 0;
- int j = ksh_NSIG;
+ int j = ksh_NSIG - 1;
struct kill_info ki = { 0, 0 };
do {
@@ -1436,7 +1459,8 @@ void
getopts_reset(int val)
{
if (val >= 1) {
- ksh_getopt_reset(&user_opt, GF_NONAME | GF_PLUSOPT);
+ ksh_getopt_reset(&user_opt, GF_NONAME |
+ (Flag(FPOSIX) ? 0 : GF_PLUSOPT));
user_opt.optind = user_opt.uoptind = val;
}
}
@@ -1777,7 +1801,11 @@ c_dot(const char **wp)
bi_errorf("missing argument");
return (1);
}
- if ((file = search_path(cp, path, R_OK, &errcode)) == NULL) {
+ file = search_path(cp, path, R_OK, &errcode);
+ if (!file && errcode == ENOENT && wp[0][0] == 's' &&
+ search_access(cp, R_OK) == 0)
+ file = cp;
+ if (!file) {
bi_errorf("%s: %s", cp, cstrerror(errcode));
return (1);
}
@@ -1835,13 +1863,15 @@ c_read(const char **wp)
enum { LINES, BYTES, UPTO, READALL } readmode = LINES;
char delim = '\n';
size_t bytesleft = 128, bytesread;
- struct tbl *vp /* FU gcc */ = NULL, *vq;
+ struct tbl *vp /* FU gcc */ = NULL, *vq = NULL;
char *cp, *allocd = NULL, *xp;
const char *ccp;
XString xs;
size_t xsave = 0;
mksh_ttyst tios;
bool restore_tios = false;
+ /* to catch read -aN2 foo[i] */
+ bool subarray = false;
#if HAVE_SELECT
bool hastimeout = false;
struct timeval tv, tvlim;
@@ -2086,6 +2116,7 @@ c_read(const char **wp)
XinitN(xs, 128, ATEMP);
if (intoarray) {
vp = global(*wp);
+ subarray = last_lookup_was_array;
if (vp->flag & RDONLY) {
c_read_splitro:
bi_errorf("read-only: %s", *wp);
@@ -2094,10 +2125,10 @@ c_read(const char **wp)
afree(cp, ATEMP);
goto c_read_out;
}
- /* exporting an array is currently pointless */
- unset(vp, 1);
/* counter for array index */
- c = 0;
+ c = subarray ? arrayindex(vp) : 0;
+ /* exporting an array is currently pointless */
+ unset(vp, subarray ? 0 : 1);
}
if (!aschars) {
/* skip initial IFS whitespace */
@@ -2199,7 +2230,18 @@ c_read(const char **wp)
c_read_gotword:
Xput(xs, xp, '\0');
if (intoarray) {
- vq = arraysearch(vp, c++);
+ if (subarray) {
+ /* array element passed, accept first read */
+ if (vq) {
+ bi_errorf("nested arrays not yet supported");
+ goto c_read_spliterr;
+ }
+ vq = vp;
+ if (c)
+ /* [0] doesn't */
+ vq->flag |= AINDEX;
+ } else
+ vq = arraysearch(vp, c++);
} else {
vq = global(*wp);
/* must be checked before exporting */
@@ -2293,7 +2335,7 @@ int
c_trap(const char **wp)
{
Trap *p = sigtraps;
- int i = ksh_NSIG + 1;
+ int i = ksh_NSIG;
const char *s;
if (ksh_getopt(wp, &builtin_opt, null) == '?')
@@ -2308,7 +2350,7 @@ c_trap(const char **wp)
shprintf(" %s\n", p->name);
}
++p;
- } while (--i);
+ } while (i--);
return (0);
}
@@ -2339,16 +2381,14 @@ int
c_exitreturn(const char **wp)
{
int n, how = LEXIT;
- const char *arg;
- if (ksh_getopt(wp, &builtin_opt, null) == '?')
- goto c_exitreturn_err;
- arg = wp[builtin_opt.optind];
-
- if (arg)
- exstat = bi_getn(arg, &n) ? (n & 0xFF) : 1;
- else if (trap_exstat != -1)
+ if (wp[1]) {
+ if (wp[2])
+ goto c_exitreturn_err;
+ exstat = bi_getn(wp[1], &n) ? (n & 0xFF) : 1;
+ } else if (trap_exstat != -1)
exstat = trap_exstat;
+
if (wp[0][0] == 'r') {
/* return */
struct env *ep;
@@ -2369,12 +2409,13 @@ c_exitreturn(const char **wp)
how = LSHELL;
}
- /* get rid of any i/o redirections */
+ /* get rid of any I/O redirections */
quitenv(NULL);
unwind(how);
/* NOTREACHED */
c_exitreturn_err:
+ bi_errorf("too many arguments");
return (1);
}
@@ -2542,7 +2583,7 @@ p_time(struct shf *shf, bool posix, long tv_sec, int tv_usec, int width,
shf_fprintf(shf, "%s%*ld.%02d%s", prefix, width,
tv_sec, tv_usec, suffix);
else
- shf_fprintf(shf, "%s%*ldm%d.%02ds%s", prefix, width,
+ shf_fprintf(shf, "%s%*ldm%02d.%02ds%s", prefix, width,
tv_sec / 60, (int)(tv_sec % 60), tv_usec, suffix);
}
@@ -2840,7 +2881,7 @@ c_test(const char **wp)
/*
* Attempt to conform to POSIX special cases. This is pretty
- * dumb code straight-forward from the 2008 spec, but unless
+ * dumb code straight-forward from the 2008 spec, but unlike
* the old pdksh code doesn't live from so many assumptions.
* It does, though, inline some calls to '(*te.funcname)()'.
*/
@@ -2861,6 +2902,8 @@ c_test(const char **wp)
ptest_unary:
rv = test_eval(&te, op, *te.pos.wp++, NULL, true);
ptest_out:
+ if (te.flags & TEF_ERROR)
+ return (T_ERR_EXIT);
return ((invert & 1) ? rv : !rv);
}
/* let the parser deal with anything else */
@@ -3638,10 +3681,11 @@ c_realpath(const char **wp)
int
c_cat(const char **wp)
{
- int fd = STDIN_FILENO, rv, eno;
+ int fd = STDIN_FILENO, rv;
ssize_t n, w;
const char *fn = "<stdin>";
char *buf, *cp;
+ int opipe = 0;
#define MKSH_CAT_BUFSIZ 4096
/* parse options: POSIX demands we support "-u" as no-op */
@@ -3663,54 +3707,64 @@ c_cat(const char **wp)
return (1);
}
+ /* catch SIGPIPE */
+ opipe = block_pipe();
+
do {
if (*wp) {
fn = *wp++;
if (ksh_isdash(fn))
fd = STDIN_FILENO;
else if ((fd = binopen2(fn, O_RDONLY)) < 0) {
- eno = errno;
- bi_errorf("%s: %s", fn, cstrerror(eno));
+ bi_errorf("%s: %s", fn, cstrerror(errno));
rv = 1;
continue;
}
}
while (/* CONSTCOND */ 1) {
- n = blocking_read(fd, (cp = buf), MKSH_CAT_BUFSIZ);
- eno = errno;
- /* give the user a chance to ^C out */
- intrcheck();
- if (n == -1) {
- if (eno == EINTR) {
+ if ((n = blocking_read(fd, (cp = buf),
+ MKSH_CAT_BUFSIZ)) == -1) {
+ if (errno == EINTR) {
+ restore_pipe(opipe);
+ /* give the user a chance to ^C out */
+ intrcheck();
/* interrupted, try again */
+ opipe = block_pipe();
continue;
}
/* an error occured during reading */
- bi_errorf("%s: %s", fn, cstrerror(eno));
+ bi_errorf("%s: %s", fn, cstrerror(errno));
rv = 1;
break;
} else if (n == 0)
/* end of file reached */
break;
while (n) {
- w = write(STDOUT_FILENO, cp, n);
- eno = errno;
- /* give the user a chance to ^C out */
- intrcheck();
- if (w == -1) {
- if (eno == EINTR)
- /* interrupted, try again */
- continue;
+ if ((w = write(STDOUT_FILENO, cp, n)) != -1) {
+ n -= w;
+ cp += w;
+ continue;
+ }
+ if (errno == EINTR) {
+ restore_pipe(opipe);
+ /* give the user a chance to ^C out */
+ intrcheck();
+ /* interrupted, try again */
+ opipe = block_pipe();
+ continue;
+ }
+ if (errno == EPIPE) {
+ /* fake receiving signel */
+ rv = ksh_sigmask(SIGPIPE);
+ } else {
/* an error occured during writing */
bi_errorf("%s: %s", "<stdout>",
- cstrerror(eno));
+ cstrerror(errno));
rv = 1;
- if (fd != STDIN_FILENO)
- close(fd);
- goto out;
}
- n -= w;
- cp += w;
+ if (fd != STDIN_FILENO)
+ close(fd);
+ goto out;
}
}
if (fd != STDIN_FILENO)
@@ -3718,6 +3772,7 @@ c_cat(const char **wp)
} while (*wp);
out:
+ restore_pipe(opipe);
free_osfunc(buf);
return (rv);
}
generated by cgit v1.2.3 (git 2.25.1) at 2026-04-10 12:58:20 +0000