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Diffstat (limited to 'networking')
-rw-r--r--networking/inetd.c126
1 files changed, 50 insertions, 76 deletions
diff --git a/networking/inetd.c b/networking/inetd.c
index db0ee814b..d225527a9 100644
--- a/networking/inetd.c
+++ b/networking/inetd.c
@@ -267,7 +267,6 @@ static int maxsock;
static int timingout;
static int rlim_ofile_cur = OPEN_MAX;
static const char *CONFIG = _PATH_INETDCONF;
-static FILE *fconfig;
static void
syslog_err_and_discard_dg(int se_socktype, const char *msg, ...)
@@ -286,20 +285,6 @@ syslog_err_and_discard_dg(int se_socktype, const char *msg, ...)
_exit(1);
}
-static FILE *setconfig(void)
-{
- FILE *f = fconfig;
-
- if (f != NULL) {
- fseek(f, 0L, L_SET);
- } else {
- f = fconfig = fopen(CONFIG, "r");
- if(f == NULL)
- syslog(LOG_ERR, "%s: %m", CONFIG);
- }
- return f;
-}
-
static char *skip(char **cpp)
{
char *cp = *cpp;
@@ -473,62 +458,6 @@ static void setproctitle(char *a, int s)
}
#endif /* INETD_FEATURE_ENABLED */
-static struct servtab *enter(struct servtab *cp)
-{
- struct servtab *sep;
- sigset_t oldmask;
-
- sep = (struct servtab *)malloc(sizeof (*sep));
- if (sep == NULL) {
- syslog_err_and_discard_dg(SOCK_STREAM, bb_msg_memory_exhausted);
- }
- *sep = *cp;
- sep->se_fd = -1;
- sigprocmask(SIG_BLOCK, &blockmask, &oldmask);
- sep->se_next = servtab;
- servtab = sep;
- sigprocmask(SIG_SETMASK, &oldmask, NULL);
- return (sep);
-}
-
-static int bump_nofile(void)
-{
-#ifdef RLIMIT_NOFILE
-
-#define FD_CHUNK 32
-
- struct rlimit rl;
-
- if (getrlimit(RLIMIT_NOFILE, &rl) < 0) {
- syslog(LOG_ERR, "getrlimit: %m");
- return -1;
- }
- rl.rlim_cur = rl.rlim_max < (rl.rlim_cur + FD_CHUNK) ? rl.rlim_max : (rl.rlim_cur + FD_CHUNK);
- if (rl.rlim_cur <= rlim_ofile_cur) {
- syslog(LOG_ERR,
-#if _FILE_OFFSET_BITS == 64
- "bump_nofile: cannot extend file limit, max = %lld",
-#else
- "bump_nofile: cannot extend file limit, max = %ld",
-#endif
- rl.rlim_cur);
- return -1;
- }
-
- if (setrlimit(RLIMIT_NOFILE, &rl) < 0) {
- syslog(LOG_ERR, "setrlimit: %m");
- return -1;
- }
-
- rlim_ofile_cur = rl.rlim_cur;
- return 0;
-
-#else
- syslog(LOG_ERR, "bump_nofile: cannot extend file limit");
- return -1;
-#endif
-}
-
static void setup(struct servtab *sep)
{
@@ -560,8 +489,39 @@ static void setup(struct servtab *sep)
nsock++;
if (sep->se_fd > maxsock) {
maxsock = sep->se_fd;
- if (maxsock > rlim_ofile_cur - FD_MARGIN)
- bump_nofile();
+ if (maxsock > rlim_ofile_cur - FD_MARGIN) {
+#ifdef RLIMIT_NOFILE
+# define FD_CHUNK 32
+ struct rlimit rl;
+
+ if (getrlimit(RLIMIT_NOFILE, &rl) < 0) {
+ syslog(LOG_ERR, "getrlimit: %m");
+ return;
+ }
+ rl.rlim_cur = rl.rlim_max < (rl.rlim_cur + FD_CHUNK) ? rl.rlim_max : (rl.rlim_cur + FD_CHUNK);
+ if (rl.rlim_cur <= rlim_ofile_cur) {
+ syslog(LOG_ERR,
+# if _FILE_OFFSET_BITS == 64
+ "bump_nofile: cannot extend file limit, max = %lld",
+# else
+ "bump_nofile: cannot extend file limit, max = %ld",
+# endif
+ rl.rlim_cur);
+ return;
+ }
+
+ if (setrlimit(RLIMIT_NOFILE, &rl) < 0) {
+ syslog(LOG_ERR, "setrlimit: %m");
+ return;
+ }
+
+ rlim_ofile_cur = rl.rlim_cur;
+ return;
+#else
+ syslog(LOG_ERR, "bump_nofile: cannot extend file limit");
+ return;
+#endif /* RLIMIT_NOFILE */
+ }
}
}
@@ -572,8 +532,16 @@ static void config(int signum)
unsigned n;
(void)signum;
- if (setconfig() == NULL)
- return;
+
+ if (fconfig != NULL) {
+ fseek(fconfig, 0L, L_SET);
+ } else {
+ fconfig = fopen(CONFIG, "r");
+ if (fconfig == NULL) {
+ syslog(LOG_ERR, "%s: %m", CONFIG);
+ return;
+ }
+ }
for (sep = servtab; sep; sep = sep->se_next)
sep->se_checked = 0;
@@ -614,7 +582,13 @@ static void config(int signum)
sigprocmask(SIG_SETMASK, &oldmask, NULL);
freeconfig(cp);
} else {
- sep = enter(cp);
+ sep = (struct servtab *)xmalloc(sizeof (*sep));
+ *sep = *cp;
+ sep->se_fd = -1;
+ sigprocmask(SIG_BLOCK, &blockmask, &oldmask);
+ sep->se_next = servtab;
+ servtab = sep;
+ sigprocmask(SIG_SETMASK, &oldmask, NULL);
}
sep->se_checked = 1;