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make readonly idempotent; spotted by selk from Dragora

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tg
2017-07-26 23:02:28 +00:00
parent ac262e5395
commit b903a5e66a
3 changed files with 17 additions and 10 deletions
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10
var.c
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@@ -28,7 +28,7 @@
#include <sys/sysctl.h>
#endif
__RCSID("$MirOS: src/bin/mksh/var.c,v 1.219 2017/05/05 22:53:32 tg Exp $");
__RCSID("$MirOS: src/bin/mksh/var.c,v 1.220 2017/07/26 23:02:28 tg Exp $");
/*-
* Variables
@@ -917,12 +917,12 @@ typeset(const char *var, uint32_t set, uint32_t clr, int field, int base)
vpbase = (vp->flag & ARRAY) ? global(arrayname(tvar)) : vp;
/*
* only allow export flag to be set; AT&T ksh allows any
* attribute to be changed which means it can be truncated or
* modified (-L/-R/-Z/-i)
* only allow export and readonly flag to be set; AT&T ksh
* allows any attribute to be changed which means it can be
* truncated or modified (-L/-R/-Z/-i)
*/
if ((vpbase->flag & RDONLY) &&
(val || clr || (set & ~EXPORT)))
(val || clr || (set & ~(EXPORT | RDONLY))))
/* XXX check calls - is error here ok by POSIX? */
errorfx(2, Tf_ro, tvar);
afree(tvar, ATEMP);