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authorDenis Vlasenko <vda.linux@googlemail.com>2008-06-17 12:28:44 +0000
committerDenis Vlasenko <vda.linux@googlemail.com>2008-06-17 12:28:44 +0000
commit16c2fea2803d64b84d196fc315132fd09112ff14 (patch)
treed66b6f43e8fd52c63a49d1b4fbb89852debe6eb1 /shell
parent13436ea0dd2b70271d30bd6f682cc9cbe41b26c6 (diff)
downloadbusybox-16c2fea2803d64b84d196fc315132fd09112ff14.tar.gz
hush: fix $$ handling
Diffstat (limited to 'shell')
-rw-r--r--shell/hush.c6
-rw-r--r--shell/hush_test/hush-misc/pid.right1
-rwxr-xr-xshell/hush_test/hush-misc/pid.tests1
3 files changed, 7 insertions, 1 deletions
diff --git a/shell/hush.c b/shell/hush.c
index 45448c5f3..e49e6e9b2 100644
--- a/shell/hush.c
+++ b/shell/hush.c
@@ -395,6 +395,7 @@ struct globals {
int run_list_level;
pid_t saved_task_pgrp;
pid_t saved_tty_pgrp;
+ pid_t root_pid;
int last_jobid;
struct pipe *job_list;
struct pipe *toplevel_list;
@@ -441,6 +442,7 @@ enum { run_list_level = 0 };
#define run_list_level (G.run_list_level )
#define saved_task_pgrp (G.saved_task_pgrp )
#define saved_tty_pgrp (G.saved_tty_pgrp )
+#define root_pid (G.root_pid )
#define last_jobid (G.last_jobid )
#define job_list (G.job_list )
#define toplevel_list (G.toplevel_list )
@@ -2353,7 +2355,7 @@ static int expand_vars_to_list(o_string *output, int n, char *arg, char or_mask)
/* Highest bit in first_ch indicates that var is double-quoted */
case '$': /* pid */
/* FIXME: (echo $$) should still print pid of main shell */
- val = utoa(getpid()); /* rootpid? */
+ val = utoa(root_pid);
break;
case '!': /* bg pid */
val = last_bg_pid ? utoa(last_bg_pid) : (char*)"";
@@ -3752,6 +3754,8 @@ int hush_main(int argc, char **argv)
INIT_G();
+ root_pid = getpid();
+
/* Deal with HUSH_VERSION */
shell_ver = const_shell_ver; /* copying struct here */
top_var = &shell_ver;
diff --git a/shell/hush_test/hush-misc/pid.right b/shell/hush_test/hush-misc/pid.right
new file mode 100644
index 000000000..573541ac9
--- /dev/null
+++ b/shell/hush_test/hush-misc/pid.right
@@ -0,0 +1 @@
+0
diff --git a/shell/hush_test/hush-misc/pid.tests b/shell/hush_test/hush-misc/pid.tests
new file mode 100755
index 000000000..eaeaa717b
--- /dev/null
+++ b/shell/hush_test/hush-misc/pid.tests
@@ -0,0 +1 @@
+test `(echo $$)` = `echo $$`; echo $?