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authorDenys Vlasenko <vda.linux@googlemail.com>2016-10-27 02:31:55 +0200
committerDenys Vlasenko <vda.linux@googlemail.com>2016-10-27 02:31:55 +0200
commit70392331a98d266af539be4b910812fc7b0a72d4 (patch)
treef974f7c08d06daffc487bde7eb72433547ef2a08
parent65a8b859a9a3f2bb4a62c15ca1f4d01288593734 (diff)
downloadbusybox-70392331a98d266af539be4b910812fc7b0a72d4.tar.gz
ash: comment tweaks, no code changes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
-rw-r--r--shell/ash.c19
1 files changed, 12 insertions, 7 deletions
diff --git a/shell/ash.c b/shell/ash.c
index 133b2d40e..864b8f0a4 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.
*/