diff options
Diffstat (limited to 'src/common/compat.c')
| -rw-r--r-- | src/common/compat.c | 33 |
1 files changed, 30 insertions, 3 deletions
diff --git a/src/common/compat.c b/src/common/compat.c index 25bcde5912..71ac5d5e04 100644 --- a/src/common/compat.c +++ b/src/common/compat.c @@ -94,6 +94,9 @@ const char compat_c_id[] = #ifdef HAVE_SYS_MMAN_H #include <sys/mman.h> #endif +#ifdef HAVE_SYS_SYSLIMITS_H +#include <sys/syslimits.h> +#endif #ifdef USE_BSOCKETS #include <bsocket.h> @@ -653,9 +656,33 @@ set_max_file_descriptors(unsigned long limit, unsigned long cap) } rlim.rlim_cur = most; if (setrlimit(RLIMIT_NOFILE, &rlim) != 0) { - log_warn(LD_CONFIG, "Could not set maximum number of file descriptors: %s", - strerror(errno)); - return -1; + int bad = 1; +#ifdef OPEN_MAX + if (errno == EINVAL && OPEN_MAX < rlim.rlim_cur) { + /* On some platforms, OPEN_MAX is the real limit, and getrlimit() is + * full of nasty lies. I'm looking at you, OSX 10.5.... */ + rlim.rlim_cur = OPEN_MAX; + if (setrlimit(RLIMIT_NOFILE, &rlim) == 0) { + if (rlim.rlim_cur < limit) { + log_warn(LD_CONFIG, "We are limited to %lu file descriptors by " + "OPEN_MAX, and ConnLimit is %lu. Changing ConnLimit; sorry.", + (unsigned long)OPEN_MAX, limit); + } else { + log_info(LD_CONFIG, "Dropped connection limit to OPEN_MAX (%lu); " + "Apparently, %lu was too high and rlimit lied to us.", + (unsigned long)OPEN_MAX, (unsigned long)most); + } + most = rlim.rlim_cur; + bad = 0; + } + } +#endif + if (bad) { + log_warn(LD_CONFIG, + "Couldn't set maximum number of file descriptors: %s", + strerror(errno)); + return -1; + } } /* leave some overhead for logs, etc, */ limit = most; |