diff options
Diffstat (limited to 'init/init.c')
| -rw-r--r-- | init/init.c | 33 |
1 files changed, 14 insertions, 19 deletions
diff --git a/init/init.c b/init/init.c index e02773c..e00a3b1 100644 --- a/init/init.c +++ b/init/init.c @@ -77,14 +77,6 @@ enum { #endif }; -static const char *const environment[] = { - "HOME=/", - bb_PATH_root_path, - "SHELL=/bin/sh", - "USER=root", - NULL -}; - /* Function prototypes */ static void halt_reboot_pwoff(int sig) NORETURN; @@ -118,15 +110,16 @@ static void message(int where, const char *fmt, ...) { static int log_fd = -1; va_list arguments; - int l; + unsigned l; char msg[128]; msg[0] = '\r'; va_start(arguments, fmt); - vsnprintf(msg + 1, sizeof(msg) - 2, fmt, arguments); + l = vsnprintf(msg + 1, sizeof(msg) - 2, fmt, arguments); + if (l > sizeof(msg) - 2) + l = sizeof(msg) - 2; + msg[l] = '\0'; va_end(arguments); - msg[sizeof(msg) - 2] = '\0'; - l = strlen(msg); if (ENABLE_FEATURE_INIT_SYSLOG) { /* Log the message to syslogd */ @@ -213,6 +206,8 @@ static void console_init(void) /* Make sure fd 0,1,2 are not closed * (so that they won't be used by future opens) */ bb_sanitize_stdio(); + /* Make sure init can't be blocked by writing to stderr */ + fcntl(STDERR_FILENO, F_SETFL, fcntl(STDERR_FILENO, F_GETFL) | O_NONBLOCK); } s = getenv("TERM"); @@ -825,15 +820,15 @@ int init_main(int argc UNUSED_PARAM, char **argv) set_sane_term(); xchdir("/"); setsid(); - { - const char *const *e; - /* Make sure environs is set to something sane */ - for (e = environment; *e; e++) - putenv((char *) *e); - } + + /* Make sure environs is set to something sane */ + putenv((char *) "HOME=/"); + putenv((char *) bb_PATH_root_path); + putenv((char *) "SHELL=/bin/sh"); + putenv((char *) "USER=root"); /* needed? why? */ if (argv[1]) - setenv("RUNLEVEL", argv[1], 1); + xsetenv("RUNLEVEL", argv[1]); /* Hello world */ message(MAYBE_CONSOLE | L_LOG, "init started: %s", bb_banner); |