diff options
Diffstat (limited to 'networking')
| -rw-r--r-- | networking/inetd.c | 126 |
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; |