diff options
Diffstat (limited to 'libbb/run_shell.c')
| -rw-r--r-- | libbb/run_shell.c | 18 |
1 files changed, 10 insertions, 8 deletions
diff --git a/libbb/run_shell.c b/libbb/run_shell.c index 4608a24a9..4d92c3caa 100644 --- a/libbb/run_shell.c +++ b/libbb/run_shell.c @@ -49,15 +49,14 @@ void FAST_FUNC set_current_security_context(security_context_t sid) #endif -/* Run SHELL, or DEFAULT_SHELL if SHELL is empty. - If COMMAND is nonzero, pass it to the shell with the -c option. - If ADDITIONAL_ARGS is nonzero, pass it to the shell as more - arguments. */ - +/* Run SHELL, or DEFAULT_SHELL if SHELL is "" or NULL. + * If COMMAND is nonzero, pass it to the shell with the -c option. + * If ADDITIONAL_ARGS is nonzero, pass it to the shell as more + * arguments. */ void FAST_FUNC run_shell(const char *shell, int loginshell, const char *command, const char **additional_args) { const char **args; - int argno = 1; + int argno; int additional_args_cnt = 0; for (args = additional_args; args && *args; args++) @@ -65,11 +64,13 @@ void FAST_FUNC run_shell(const char *shell, int loginshell, const char *command, args = xmalloc(sizeof(char*) * (4 + additional_args_cnt)); - args[0] = bb_get_last_path_component_nostrip(xstrdup(shell)); + if (!shell || !shell[0]) + shell = DEFAULT_SHELL; + args[0] = bb_get_last_path_component_nostrip(shell); if (loginshell) args[0] = xasprintf("-%s", args[0]); - + argno = 1; if (command) { args[argno++] = "-c"; args[argno++] = command; @@ -79,6 +80,7 @@ void FAST_FUNC run_shell(const char *shell, int loginshell, const char *command, args[argno++] = *additional_args; } args[argno] = NULL; + #if ENABLE_SELINUX if (current_sid) setexeccon(current_sid); |