diff options
Diffstat (limited to 'shell/ash.c')
| -rw-r--r-- | shell/ash.c | 25 |
1 files changed, 24 insertions, 1 deletions
diff --git a/shell/ash.c b/shell/ash.c index 1ef02b8..fe11245 100644 --- a/shell/ash.c +++ b/shell/ash.c @@ -2180,6 +2180,7 @@ setvareq(char *s, int flags) if (flags & VNOSAVE) free(s); n = vp->var_text; + exitstatus = 1; ash_msg_and_raise_error("%.*s: is read only", strchrnul(n, '=') - n, n); } @@ -9599,7 +9600,7 @@ evalcommand(union node *cmd, int flags) if (evalbltin(cmdentry.u.cmd, argc, argv, flags)) { if (exception_type == EXERROR && spclbltin <= 0) { FORCE_INT_ON; - break; + goto readstatus; } raise: longjmp(exception_handler->loc, 1); @@ -12280,6 +12281,10 @@ expandstr(const char *ps) static int evalstring(char *s, int flags) { + struct jmploc *volatile savehandler = exception_handler; + struct jmploc jmploc; + int ex; + union node *n; struct stackmark smark; int status; @@ -12289,6 +12294,19 @@ evalstring(char *s, int flags) setstackmark(&smark); status = 0; + /* On exception inside execution loop, we must popfile(). + * Try interactively: + * readonly a=a + * command eval "a=b" # throws "is read only" error + * "command BLTIN" is not supposed to abort (even in non-interactive use). + * But if we skip popfile(), we hit EOF in eval's string, and exit. + */ + savehandler = exception_handler; + exception_handler = &jmploc; + ex = setjmp(jmploc.loc); + if (ex) + goto out; + while ((n = parsecmd(0)) != NODE_EOF) { int i; @@ -12299,10 +12317,15 @@ evalstring(char *s, int flags) if (evalskip) break; } + out: popstackmark(&smark); popfile(); stunalloc(s); + exception_handler = savehandler; + if (ex) + longjmp(exception_handler->loc, ex); + return status; } |