diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/eval.c | 64 |
1 files changed, 19 insertions, 45 deletions
diff --git a/src/eval.c b/src/eval.c index 426c03a..86423b4 100644 --- a/src/eval.c +++ b/src/eval.c @@ -68,7 +68,6 @@ /* flags in argument to evaltree */ #define EV_EXIT 01 /* exit after evaluating tree */ #define EV_TESTED 02 /* exit status is checked; ignore -e flag */ -#define EV_BACKCMD 04 /* command executing within back quotes */ int evalskip; /* set if we are skipping commands */ STATIC int skipcount; /* number of levels to skip */ @@ -594,6 +593,9 @@ evalpipe(union node *n, int flags) void evalbackcmd(union node *n, struct backcmd *result) { + int pip[2]; + struct job *jp; + result->fd = -1; result->buf = NULL; result->nleft = 0; @@ -602,52 +604,24 @@ evalbackcmd(union node *n, struct backcmd *result) goto out; } -#ifdef notyet - /* - * For now we disable executing builtins in the same - * context as the shell, because we are not keeping - * enough state to recover from changes that are - * supposed only to affect subshells. eg. echo "`cd /`" - */ - if (n->type == NCMD) { - struct ifsregion saveifs; - struct ifsregion *savelastp; - struct nodelist *saveargbackq; - - saveifs = ifsfirst; - savelastp = ifslastp; - saveargbackq = argbackq; - - exitstatus = oexitstatus; - evalcommand(n, EV_BACKCMD, result); - - ifsfirst = saveifs; - ifslastp = savelastp; - argbackq = saveargbackq; - } else -#endif - { - int pip[2]; - struct job *jp; - - if (pipe(pip) < 0) - sh_error("Pipe call failed"); - jp = makejob(n, 1); - if (forkshell(jp, n, FORK_NOJOB) == 0) { - FORCEINTON; - close(pip[0]); - if (pip[1] != 1) { - dup2(pip[1], 1); - close(pip[1]); - } - ifsfree(); - evaltreenr(n, EV_EXIT); - /* NOTREACHED */ + if (pipe(pip) < 0) + sh_error("Pipe call failed"); + jp = makejob(n, 1); + if (forkshell(jp, n, FORK_NOJOB) == 0) { + FORCEINTON; + close(pip[0]); + if (pip[1] != 1) { + dup2(pip[1], 1); + close(pip[1]); } - close(pip[1]); - result->fd = pip[0]; - result->jp = jp; + ifsfree(); + evaltreenr(n, EV_EXIT); + /* NOTREACHED */ } + close(pip[1]); + result->fd = pip[0]; + result->jp = jp; + out: TRACE(("evalbackcmd done: fd=%d buf=0x%x nleft=%d jp=0x%x\n", result->fd, result->buf, result->nleft, result->jp)); |