diff options
Diffstat (limited to 'shell/ash.c')
| -rw-r--r-- | shell/ash.c | 19 |
1 files changed, 12 insertions, 7 deletions
diff --git a/shell/ash.c b/shell/ash.c index 133b2d4..864b8f0 100644 --- a/shell/ash.c +++ b/shell/ash.c @@ -2590,7 +2590,7 @@ setpwd(const char *val, int setold) static void hashcd(void); /* - * Actually do the chdir. We also call hashcd to let the routines in exec.c + * Actually do the chdir. We also call hashcd to let other routines * know that the current directory has changed. */ static int @@ -4679,6 +4679,7 @@ clear_traps(void) static void closescript(void); /* Called after fork(), in child */ +/* jp and n are NULL when called by openhere() for heredoc support */ static NOINLINE void forkchild(struct job *jp, union node *n, int mode) { @@ -4810,6 +4811,7 @@ forkparent(struct job *jp, union node *n, int mode, pid_t pid) { TRACE(("In parent shell: child = %d\n", pid)); if (!jp) { + /* jp is NULL when called by openhere() for heredoc support */ while (jobless && dowait(DOWAIT_NONBLOCK, NULL) > 0) continue; jobless++; @@ -4843,6 +4845,7 @@ forkparent(struct job *jp, union node *n, int mode, pid_t pid) } } +/* jp and n are NULL when called by openhere() for heredoc support */ static int forkshell(struct job *jp, union node *n, int mode) { @@ -4972,8 +4975,7 @@ stoppedjobs(void) } -/* ============ redir.c - * +/* * Code for dealing with input/output redirection. */ @@ -5860,6 +5862,7 @@ evalbackcmd(union node *n, struct backcmd *result) ash_msg_and_raise_error("pipe call failed"); jp = makejob(/*n,*/ 1); if (forkshell(jp, n, FORK_NOJOB) == 0) { + /* child */ FORCE_INT_ON; close(pip[0]); if (pip[1] != 1) { @@ -5879,6 +5882,7 @@ evalbackcmd(union node *n, struct backcmd *result) evaltree(n, EV_EXIT); /* actually evaltreenr... */ /* NOTREACHED */ } + /* parent */ close(pip[1]); result->fd = pip[0]; result->jp = jp; @@ -8764,6 +8768,7 @@ evalsubshell(union node *n, int flags) evaltreenr(n->nredir.n, flags); /* never returns */ } + /* parent */ status = 0; if (!backgnd) status = waitforjob(jp); @@ -8869,6 +8874,7 @@ evalpipe(union node *n, int flags) } } if (forkshell(jp, lp->n, n->npipe.pipe_backgnd) == 0) { + /* child */ INT_ON; if (pip[1] >= 0) { close(pip[0]); @@ -8884,6 +8890,7 @@ evalpipe(union node *n, int flags) evaltreenr(lp->n, flags); /* never returns */ } + /* parent */ if (prevfd >= 0) close(prevfd); prevfd = pip[0]; @@ -9702,8 +9709,7 @@ breakcmd(int argc UNUSED_PARAM, char **argv) } -/* ============ input.c - * +/* * This implements the input routines used by the parser. */ @@ -10198,8 +10204,7 @@ setinputstring(char *string) } -/* ============ mail.c - * +/* * Routines to check for mail. */ |