diff options
| author | Denys Vlasenko <vda.linux@googlemail.com> | 2009-10-09 15:40:49 +0200 |
|---|---|---|
| committer | Denys Vlasenko <vda.linux@googlemail.com> | 2009-10-09 15:40:49 +0200 |
| commit | dea478855f8de7fe0974f5cbb5fa3f5968c46302 (patch) | |
| tree | 512e659a6922af8cb7c2e303d93387f0019b04ea /shell/hush.c | |
| parent | 3f11f35124f3b2deca1a403520260f290b6f8901 (diff) | |
hush: support $PPID
function old new delta
get_local_var_value 33 72 +39
hush_main 951 983 +32
block_signals 152 155 +3
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 3/0 up/down: 74/0) Total: 74 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Diffstat (limited to 'shell/hush.c')
| -rw-r--r-- | shell/hush.c | 19 |
1 files changed, 15 insertions, 4 deletions
diff --git a/shell/hush.c b/shell/hush.c index ec38023ff..3028d795c 100644 --- a/shell/hush.c +++ b/shell/hush.c @@ -484,6 +484,7 @@ struct globals { line_input_t *line_input_state; #endif pid_t root_pid; + pid_t root_ppid; pid_t last_bg_pid; #if ENABLE_HUSH_JOB int run_list_level; @@ -1307,6 +1308,9 @@ static const char *get_local_var_value(const char *name) struct variable **pp = get_ptr_to_local_var(name); if (pp) return strchr((*pp)->varstr, '=') + 1; + if (strcmp(name, "PPID") == 0) + return utoa(G.root_ppid); + // bash compat: UID? EUID? return NULL; } @@ -2687,8 +2691,9 @@ static void re_execute_shell(char ***to_free, const char *s, if (pp) while (*pp++) cnt++; - sprintf(param_buf, "-$%x:%x:%x:%x" IF_HUSH_LOOPS(":%x") + sprintf(param_buf, "-$%x:%x:%x:%x:%x" IF_HUSH_LOOPS(":%x") , (unsigned) G.root_pid + , (unsigned) G.root_ppid , (unsigned) G.last_bg_pid , (unsigned) G.last_exitcode , cnt @@ -6510,7 +6515,7 @@ int hush_main(int argc, char **argv) * MACHTYPE=i386-pc-linux-gnu * OSTYPE=linux-gnu * HOSTNAME=<xxxxxxxxxx> - * PPID=<NNNNN> + * PPID=<NNNNN> - we also do it elsewhere * EUID=<NNNNN> * UID=<NNNNN> * GROUPS=() @@ -6587,8 +6592,10 @@ int hush_main(int argc, char **argv) * Note: this form never happens: * sh ... -c 'builtin' [BARGV...] "" */ - if (!G.root_pid) + if (!G.root_pid) { G.root_pid = getpid(); + G.root_ppid = getppid(); + } G.global_argv = argv + optind; G.global_argc = argc - optind; if (builtin_argc) { @@ -6630,6 +6637,8 @@ int hush_main(int argc, char **argv) case '$': G.root_pid = bb_strtou(optarg, &optarg, 16); optarg++; + G.root_ppid = bb_strtou(optarg, &optarg, 16); + optarg++; G.last_bg_pid = bb_strtou(optarg, &optarg, 16); optarg++; G.last_exitcode = bb_strtou(optarg, &optarg, 16); @@ -6670,8 +6679,10 @@ int hush_main(int argc, char **argv) } } /* option parsing loop */ - if (!G.root_pid) + if (!G.root_pid) { G.root_pid = getpid(); + G.root_ppid = getppid(); + } /* If we are login shell... */ if (argv[0] && argv[0][0] == '-') { |