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sh: Remove remnants of '!!' to negate pattern.

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This Almquist extension was disabled long ago.

In pathname generation, components starting with '!!' were treated as
containing wildcards, causing unnecessary readdir (which could fail, causing
pathname generation to fail while it should not).
This commit is contained in:
Jilles Tjoelker 2010-08-22 21:18:21 +00:00
parent cd1c27af36
commit 8fdbdb5d50
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=211646
2 changed files with 30 additions and 17 deletions
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19
bin/sh/expand.c
View File

@ -109,7 +109,6 @@ STATIC void expmeta(char *, char *);
STATIC void addfname(char *);
STATIC struct strlist *expsort(struct strlist *);
STATIC struct strlist *msort(struct strlist *, int);
STATIC int pmatch(const char *, const char *, int);
STATIC char *cvtnum(int, char *);
STATIC int collate_range_cmp(int, int);
@ -1101,7 +1100,7 @@ expandmeta(struct strlist *str, int flag __unused)
for (;;) { /* fast check for meta chars */
if ((c = *p++) == '\0')
goto nometa;
if (c == '*' || c == '?' || c == '[' || c == '!')
if (c == '*' || c == '?' || c == '[')
break;
}
savelastp = exparg.lastp;
@ -1168,8 +1167,6 @@ expmeta(char *enddir, char *name)
break;
}
}
} else if (*p == '!' && p[1] == '!' && (p == name || p[-1] == '/')) {
metaflag = 1;
} else if (*p == '\0')
break;
else if (*p == CTLQUOTEMARK)
@ -1352,18 +1349,6 @@ msort(struct strlist *list, int len)
int
patmatch(const char *pattern, const char *string, int squoted)
{
#ifdef notdef
if (pattern[0] == '!' && pattern[1] == '!')
return 1 - pmatch(pattern + 2, string);
else
#endif
return pmatch(pattern, string, squoted);
}
STATIC int
pmatch(const char *pattern, const char *string, int squoted)
{
const char *p, *q;
char c;
@ -1406,7 +1391,7 @@ pmatch(const char *pattern, const char *string, int squoted)
}
}
do {
if (pmatch(p, q, squoted))
if (patmatch(p, q, squoted))
return 1;
if (squoted && *q == CTLESC)
q++;

28
tools/regression/bin/sh/expansion/pathname4.0 Normal file
View File

@ -0,0 +1,28 @@
# $FreeBSD$
failures=0
check() {
testcase=$1
expect=$2
eval "set -- $testcase"
actual="$*"
if [ "$actual" != "$expect" ]; then
failures=$((failures+1))
printf '%s\n' "For $testcase, expected $expect actual $actual"
fi
}
set -e
T=$(mktemp -d ${TMPDIR:-/tmp}/sh-test.XXXXXX)
trap 'rm -rf $T' 0
cd -P $T
mkdir !!a
touch !!a/fff
chmod u-r .
check '!!a/ff*' '!!a/fff'
chmod u+r .
exit $((failures != 0))