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* DaemonLinux.cpp : resource limiting

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This commit is contained in:
hagen 2016-11-04 00:00:00 +00:00
parent 89059abe15
commit 6ee227675a
1 changed files with 34 additions and 0 deletions
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34
DaemonLinux.cpp
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@ -8,6 +8,7 @@
#include <unistd.h>
#include <fcntl.h>
#include <sys/stat.h>
#include <sys/resource.h>
#include "Config.h"
#include "FS.h"
@ -83,6 +84,39 @@ namespace i2p
#endif
}
// set proc limits
struct rlimit limit;
uint16_t nfiles; i2p::config::GetOption("limits.openfiles", nfiles);
getrlimit(RLIMIT_NOFILE, &limit);
if (nfiles == 0) {
LogPrint(eLogInfo, "Daemon: using system limit in ", limit.rlim_cur, " max open files");
} else if (nfiles <= limit.rlim_max) {
limit.rlim_cur = nfiles;
if (setrlimit(RLIMIT_NOFILE, &limit) == 0) {
LogPrint(eLogInfo, "Daemon: set max number of open files to ",
nfiles, " (system limit is ", limit.rlim_max, ")");
} else {
LogPrint(eLogError, "Daemon: can't set max number of open files: ", strerror(errno));
}
} else {
LogPrint(eLogError, "Daemon: limits.openfiles exceeds system limit: ", limit.rlim_max);
}
uint32_t cfsize; i2p::config::GetOption("limits.coresize", cfsize);
cfsize *= 1024;
getrlimit(RLIMIT_CORE, &limit);
if (cfsize <= limit.rlim_max) {
limit.rlim_cur = cfsize;
if (setrlimit(RLIMIT_CORE, &limit) != 0) {
LogPrint(eLogError, "Daemon: can't set max size of coredump: ", strerror(errno));
} else if (cfsize == 0) {
LogPrint(eLogInfo, "Daemon: coredumps disabled");
} else {
LogPrint(eLogInfo, "Daemon: set max size of core files to ", cfsize / 1024, "Kb");
}
} else {
LogPrint(eLogError, "Daemon: limits.coresize exceeds system limit: ", limit.rlim_max);
}
// Pidfile
// this code is c-styled and a bit ugly, but we need fd for locking pidfile
std::string pidfile; i2p::config::GetOption("pidfile", pidfile);