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| author | jilles <jilles@FreeBSD.org> | 2016-01-07 20:48:24 +0000 |
|---|---|---|
| committer | jilles <jilles@FreeBSD.org> | 2016-01-07 20:48:24 +0000 |
| commit | 68a5d0c3723e6c46981d075e62545db7e77d6aed (patch) | |
| tree | 1f4c8334bb40e57e4039768bcf7bafa2aade0d0e /bin/sh | |
| parent | c0f429aa4730019664e517ed418f6c19e1e63a2d (diff) | |
| download | FreeBSD-src-68a5d0c3723e6c46981d075e62545db7e77d6aed.zip FreeBSD-src-68a5d0c3723e6c46981d075e62545db7e77d6aed.tar.gz | |
sh: Ensure OPTIND=1 in subshell without forking does not affect outer env.
Command substitutions containing a single simple command and here-document
expansion are performed in a subshell environment, but may not fork. Any
modified state of the shell environment should be restored afterward.
The state that OPTIND=1 had been done was not saved and restored here.
Note that the other parts of shellparam need not be saved and restored,
since they are not modified in these situations (a fork is done before such
modifications).
Diffstat (limited to 'bin/sh')
| -rw-r--r-- | bin/sh/eval.c | 7 | ||||
| -rw-r--r-- | bin/sh/tests/builtins/Makefile | 1 | ||||
| -rw-r--r-- | bin/sh/tests/builtins/getopts10.0 | 11 |
3 files changed, 19 insertions, 0 deletions
diff --git a/bin/sh/eval.c b/bin/sh/eval.c index 46c00de..5a3f8e7 100644 --- a/bin/sh/eval.c +++ b/bin/sh/eval.c @@ -496,10 +496,12 @@ exphere(union node *redir, struct arglist *fn) struct jmploc *savehandler; struct localvar *savelocalvars; int need_longjmp = 0; + unsigned char saveoptreset; redir->nhere.expdoc = ""; savelocalvars = localvars; localvars = NULL; + saveoptreset = shellparam.reset; forcelocal++; savehandler = handler; if (setjmp(jmploc.loc)) @@ -514,6 +516,7 @@ exphere(union node *redir, struct arglist *fn) forcelocal--; poplocalvars(); localvars = savelocalvars; + shellparam.reset = saveoptreset; if (need_longjmp) longjmp(handler->loc, 1); INTON; @@ -647,6 +650,7 @@ evalbackcmd(union node *n, struct backcmd *result) struct jmploc jmploc; struct jmploc *savehandler; struct localvar *savelocalvars; + unsigned char saveoptreset; result->fd = -1; result->buf = NULL; @@ -661,6 +665,7 @@ evalbackcmd(union node *n, struct backcmd *result) if (is_valid_fast_cmdsubst(n)) { savelocalvars = localvars; localvars = NULL; + saveoptreset = shellparam.reset; forcelocal++; savehandler = handler; if (setjmp(jmploc.loc)) { @@ -671,6 +676,7 @@ evalbackcmd(union node *n, struct backcmd *result) forcelocal--; poplocalvars(); localvars = savelocalvars; + shellparam.reset = saveoptreset; longjmp(handler->loc, 1); } } else { @@ -681,6 +687,7 @@ evalbackcmd(union node *n, struct backcmd *result) forcelocal--; poplocalvars(); localvars = savelocalvars; + shellparam.reset = saveoptreset; } else { if (pipe(pip) < 0) error("Pipe call failed: %s", strerror(errno)); diff --git a/bin/sh/tests/builtins/Makefile b/bin/sh/tests/builtins/Makefile index 63e6ab5..750e615 100644 --- a/bin/sh/tests/builtins/Makefile +++ b/bin/sh/tests/builtins/Makefile @@ -95,6 +95,7 @@ FILES+= getopts6.0 FILES+= getopts7.0 FILES+= getopts8.0 getopts8.0.stdout FILES+= getopts9.0 getopts9.0.stdout +FILES+= getopts10.0 FILES+= hash1.0 hash1.0.stdout FILES+= hash2.0 hash2.0.stdout FILES+= hash3.0 hash3.0.stdout diff --git a/bin/sh/tests/builtins/getopts10.0 b/bin/sh/tests/builtins/getopts10.0 new file mode 100644 index 0000000..a88e6ca --- /dev/null +++ b/bin/sh/tests/builtins/getopts10.0 @@ -0,0 +1,11 @@ +# $FreeBSD$ + +set -- -x arg +opt=not +getopts x opt +r1=$? OPTIND1=$OPTIND opt1=$opt +: $(: $((OPTIND = 1))) +getopts x opt +r2=$? OPTIND2=$OPTIND +[ "$r1" = 0 ] && [ "$OPTIND1" = 2 ] && [ "$opt1" = x ] && [ "$r2" != 0 ] && + [ "$OPTIND2" = 2 ] |
