smallint se_checked; /* looked at during merge */
unsigned se_max; /* allowed instances per minute */
unsigned se_count; /* number started since se_time */
- unsigned se_time; /* whem we started counting */
+ unsigned se_time; /* when we started counting */
char *se_user; /* user name to run as */
char *se_group; /* group name to run as, can be NULL */
#ifdef INETD_BUILTINS_ENABLED
#ifdef INETD_BUILTINS_ENABLED
/* Echo received data */
#if ENABLE_FEATURE_INETD_SUPPORT_BUILTIN_ECHO
-static void echo_stream(int, servtab_t *);
-static void echo_dg(int, servtab_t *);
+static void FAST_FUNC echo_stream(int, servtab_t *);
+static void FAST_FUNC echo_dg(int, servtab_t *);
#endif
/* Internet /dev/null */
#if ENABLE_FEATURE_INETD_SUPPORT_BUILTIN_DISCARD
-static void discard_stream(int, servtab_t *);
-static void discard_dg(int, servtab_t *);
+static void FAST_FUNC discard_stream(int, servtab_t *);
+static void FAST_FUNC discard_dg(int, servtab_t *);
#endif
/* Return 32 bit time since 1900 */
#if ENABLE_FEATURE_INETD_SUPPORT_BUILTIN_TIME
-static void machtime_stream(int, servtab_t *);
-static void machtime_dg(int, servtab_t *);
+static void FAST_FUNC machtime_stream(int, servtab_t *);
+static void FAST_FUNC machtime_dg(int, servtab_t *);
#endif
/* Return human-readable time */
#if ENABLE_FEATURE_INETD_SUPPORT_BUILTIN_DAYTIME
-static void daytime_stream(int, servtab_t *);
-static void daytime_dg(int, servtab_t *);
+static void FAST_FUNC daytime_stream(int, servtab_t *);
+static void FAST_FUNC daytime_dg(int, servtab_t *);
#endif
/* Familiar character generator */
#if ENABLE_FEATURE_INETD_SUPPORT_BUILTIN_CHARGEN
-static void chargen_stream(int, servtab_t *);
-static void chargen_dg(int, servtab_t *);
+static void FAST_FUNC chargen_stream(int, servtab_t *);
+static void FAST_FUNC chargen_dg(int, servtab_t *);
#endif
struct builtin {
/* NB: not necessarily NUL terminated */
char bi_service7[7]; /* internally provided service name */
uint8_t bi_fork; /* 1 if stream fn should run in child */
- void (*bi_stream_fn)(int, servtab_t *);
- void (*bi_dgram_fn)(int, servtab_t *);
+ void (*bi_stream_fn)(int, servtab_t *) FAST_FUNC;
+ void (*bi_dgram_fn)(int, servtab_t *) FAST_FUNC;
};
static const struct builtin builtins[] = {
struct rlimit rlim_ofile;
servtab_t *serv_list;
int global_queuelen;
+ int maxsock; /* max fd# in allsock, -1: unknown */
+ /* whenever maxsock grows, prev_maxsock is set to new maxsock,
+ * but if maxsock is set to -1, prev_maxsock is not changed */
int prev_maxsock;
- int maxsock;
unsigned max_concurrency;
smallint alarm_armed;
uid_t real_uid; /* user ID who ran us */
fd_set allsock;
/* Used in next_line(), and as scratch read buffer */
char line[256]; /* _at least_ 256, see LINE_SIZE */
-};
+} FIX_ALIASING;
#define G (*(struct globals*)&bb_common_bufsiz1)
enum { LINE_SIZE = COMMON_BUFSIZE - offsetof(struct globals, line) };
struct BUG_G_too_big {
#define rlim_ofile (G.rlim_ofile )
#define serv_list (G.serv_list )
#define global_queuelen (G.global_queuelen)
-#define prev_maxsock (G.prev_maxsock )
#define maxsock (G.maxsock )
+#define prev_maxsock (G.prev_maxsock )
#define max_concurrency (G.max_concurrency)
#define alarm_armed (G.alarm_armed )
#define real_uid (G.real_uid )
FD_SET(fd, &allsock);
if (maxsock >= 0 && fd > maxsock) {
prev_maxsock = maxsock = fd;
- if ((rlim_t)maxsock > rlim_ofile_cur - FD_MARGIN)
+ if ((rlim_t)fd > rlim_ofile_cur - FD_MARGIN)
bump_nofile();
}
}
static void recalculate_maxsock(void)
{
int fd = 0;
+
+ /* We may have no services, in this case maxsock should still be >= 0
+ * (code elsewhere is not happy with maxsock == -1) */
+ maxsock = 0;
while (fd <= prev_maxsock) {
if (FD_ISSET(fd, &allsock))
maxsock = fd;
}
{
- static int8_t SOCK_xxx[] ALIGN1 = {
+ static const int8_t SOCK_xxx[] ALIGN1 = {
-1,
SOCK_STREAM, SOCK_DGRAM, SOCK_RDM,
SOCK_SEQPACKET, SOCK_RAW
continue;
/* One of our "wait" services */
if (WIFEXITED(status) && WEXITSTATUS(status))
- bb_error_msg("%s: exit status 0x%x",
+ bb_error_msg("%s: exit status %u",
sep->se_program, WEXITSTATUS(status));
else if (WIFSIGNALED(status))
- bb_error_msg("%s: exit signal 0x%x",
+ bb_error_msg("%s: exit signal %u",
sep->se_program, WTERMSIG(status));
sep->se_wait = 1;
add_fd_to_set(sep->se_fd);
else
bb_sanitize_stdio();
if (!(opt & 4)) {
- openlog(applet_name, LOG_PID | LOG_NOWAIT, LOG_DAEMON);
+ /* LOG_NDELAY: connect to syslog daemon NOW.
+ * Otherwise, we may open syslog socket
+ * in vforked child, making opened fds and syslog()
+ * internal state inconsistent.
+ * This was observed to leak file descriptors. */
+ openlog(applet_name, LOG_PID | LOG_NDELAY, LOG_DAEMON);
logmode = LOGMODE_SYSLOG;
}
readable = allsock; /* struct copy */
/* if there are no fds to wait on, we will block
- * until signal wakes us up */
+ * until signal wakes us up (maxsock == 0, but readable
+ * never contains fds 0 and 1...) */
ready_fd_cnt = select(maxsock + 1, &readable, NULL, NULL, NULL);
if (ready_fd_cnt < 0) {
if (errno != EINTR) {
pid = vfork();
if (pid < 0) { /* fork error */
- bb_perror_msg("fork");
+ bb_perror_msg("vfork"+1);
sleep(1);
restore_sigmask(&omask);
maybe_close(accepted_fd);
if (sep->se_builtin) {
if (pid) { /* "pid" is -1: we did vfork */
close(sep->se_fd); /* listening socket */
- logmode = 0; /* make xwrite etc silent */
+ logmode = LOGMODE_NONE; /* make xwrite etc silent */
}
restore_sigmask(&omask);
if (sep->se_socktype == SOCK_STREAM)
if (rlim_ofile.rlim_cur != rlim_ofile_cur)
if (setrlimit(RLIMIT_NOFILE, &rlim_ofile) < 0)
bb_perror_msg("setrlimit");
- closelog();
- xmove_fd(ctrl, 0);
- xdup2(0, 1);
- xdup2(0, 2);
- /* NB: among others, this loop closes listening socket
+
+ /* closelog(); - WRONG. we are after vfork,
+ * this may confuse syslog() internal state.
+ * Let's hope libc sets syslog fd to CLOEXEC...
+ */
+ xmove_fd(ctrl, STDIN_FILENO);
+ xdup2(STDIN_FILENO, STDOUT_FILENO);
+ /* manpages of inetd I managed to find either say
+ * that stderr is also redirected to the network,
+ * or do not talk about redirection at all (!) */
+ if (!sep->se_wait) /* only for usual "tcp nowait" */
+ xdup2(STDIN_FILENO, STDERR_FILENO);
+ /* NB: among others, this loop closes listening sockets
* for nowait stream children */
for (sep2 = serv_list; sep2; sep2 = sep2->se_next)
- maybe_close(sep2->se_fd);
+ if (sep2->se_fd != ctrl)
+ maybe_close(sep2->se_fd);
sigaction_set(SIGPIPE, &saved_pipe_handler);
restore_sigmask(&omask);
BB_EXECVP(sep->se_program, sep->se_argv);
- bb_perror_msg("exec %s", sep->se_program);
+ bb_perror_msg("can't execute '%s'", sep->se_program);
do_exit1:
/* eat packet in udp case */
if (sep->se_socktype != SOCK_STREAM)
#if ENABLE_FEATURE_INETD_SUPPORT_BUILTIN_ECHO
/* Echo service -- echo data back. */
/* ARGSUSED */
-static void echo_stream(int s, servtab_t *sep UNUSED_PARAM)
+static void FAST_FUNC echo_stream(int s, servtab_t *sep UNUSED_PARAM)
{
#if BB_MMU
while (1) {
/* on failure we return to main, which does exit(EXIT_FAILURE) */
#endif
}
-static void echo_dg(int s, servtab_t *sep)
+static void FAST_FUNC echo_dg(int s, servtab_t *sep)
{
enum { BUFSIZE = 12*1024 }; /* for jumbo sized packets! :) */
char *buf = xmalloc(BUFSIZE); /* too big for stack */
#if ENABLE_FEATURE_INETD_SUPPORT_BUILTIN_DISCARD
-/* Discard service -- ignore data. MMU arches only. */
+/* Discard service -- ignore data. */
/* ARGSUSED */
-static void discard_stream(int s, servtab_t *sep UNUSED_PARAM)
+static void FAST_FUNC discard_stream(int s, servtab_t *sep UNUSED_PARAM)
{
#if BB_MMU
while (safe_read(s, line, LINE_SIZE) > 0)
#endif
}
/* ARGSUSED */
-static void discard_dg(int s, servtab_t *sep UNUSED_PARAM)
+static void FAST_FUNC discard_dg(int s, servtab_t *sep UNUSED_PARAM)
{
/* dgram builtins are non-forking - DONT BLOCK! */
recv(s, line, LINE_SIZE, MSG_DONTWAIT);
int i;
end_ring = ring;
- for (i = 0; i <= 128; ++i)
- if (isprint(i))
- *end_ring++ = i;
+ for (i = ' '; i < 127; i++)
+ *end_ring++ = i;
}
/* Character generator. MMU arches only. */
/* ARGSUSED */
-static void chargen_stream(int s, servtab_t *sep UNUSED_PARAM)
+static void FAST_FUNC chargen_stream(int s, servtab_t *sep UNUSED_PARAM)
{
char *rs;
int len;
}
}
/* ARGSUSED */
-static void chargen_dg(int s, servtab_t *sep)
+static void FAST_FUNC chargen_dg(int s, servtab_t *sep)
{
int len;
char text[LINESIZ + 2];
return htonl((uint32_t)(tv.tv_sec + 2208988800));
}
/* ARGSUSED */
-static void machtime_stream(int s, servtab_t *sep UNUSED_PARAM)
+static void FAST_FUNC machtime_stream(int s, servtab_t *sep UNUSED_PARAM)
{
uint32_t result;
result = machtime();
full_write(s, &result, sizeof(result));
}
-static void machtime_dg(int s, servtab_t *sep)
+static void FAST_FUNC machtime_dg(int s, servtab_t *sep)
{
uint32_t result;
len_and_sockaddr *lsa = alloca(LSA_LEN_SIZE + sep->se_lsa->len);
#if ENABLE_FEATURE_INETD_SUPPORT_BUILTIN_DAYTIME
/* Return human-readable time of day */
/* ARGSUSED */
-static void daytime_stream(int s, servtab_t *sep UNUSED_PARAM)
+static void FAST_FUNC daytime_stream(int s, servtab_t *sep UNUSED_PARAM)
{
time_t t;
t = time(NULL);
fdprintf(s, "%.24s\r\n", ctime(&t));
}
-static void daytime_dg(int s, servtab_t *sep)
+static void FAST_FUNC daytime_dg(int s, servtab_t *sep)
{
time_t t;
len_and_sockaddr *lsa = alloca(LSA_LEN_SIZE + sep->se_lsa->len);
projects / oweals / busybox.git / blobdiff