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-rw-r--r--util-src/pposix.c124
1 files changed, 71 insertions, 53 deletions
diff --git a/util-src/pposix.c b/util-src/pposix.c
index db2e85d3..9f16f178 100644
--- a/util-src/pposix.c
+++ b/util-src/pposix.c
@@ -2,7 +2,7 @@
-- Copyright (C) 2008-2010 Matthew Wild
-- Copyright (C) 2008-2010 Waqas Hussain
-- Copyright (C) 2009 Tobias Markmann
---
+--
-- This project is MIT/X11 licensed. Please see the
-- COPYING file in the source package for more information.
--
@@ -13,9 +13,10 @@
* POSIX support functions for Lua
*/
-#define MODULE_VERSION "0.3.1"
+#define MODULE_VERSION "0.3.3"
#include <stdlib.h>
+#include <math.h>
#include <unistd.h>
#include <libgen.h>
#include <sys/resource.h>
@@ -38,14 +39,14 @@ static int lc_daemonize(lua_State *L)
{
pid_t pid;
-
+
if ( getppid() == 1 )
{
lua_pushboolean(L, 0);
lua_pushstring(L, "already-daemonized");
return 2;
}
-
+
/* Attempt initial fork */
if((pid = fork()) < 0)
{
@@ -61,7 +62,7 @@ static int lc_daemonize(lua_State *L)
lua_pushnumber(L, pid);
return 2;
}
-
+
/* and we are the child process */
if(setsid() == -1)
{
@@ -150,7 +151,7 @@ int facility_constants[] = {
exist, the results are undefined. Most portable is to use a string
constant.
" -- syslog manpage
-*/
+*/
char* syslog_ident = NULL;
int lc_syslog_open(lua_State* L)
@@ -159,12 +160,12 @@ int lc_syslog_open(lua_State* L)
facility = facility_constants[facility];
luaL_checkstring(L, 1);
-
+
if(syslog_ident)
free(syslog_ident);
-
+
syslog_ident = strdup(lua_tostring(L, 1));
-
+
openlog(syslog_ident, LOG_PID, facility);
return 0;
}
@@ -264,7 +265,7 @@ int lc_setuid(lua_State* L)
{
uid = lua_tonumber(L, 1);
}
-
+
if(uid>-1)
{
/* Ok, attempt setuid */
@@ -293,7 +294,7 @@ int lc_setuid(lua_State* L)
return 1;
}
}
-
+
/* Seems we couldn't find a valid UID to switch to */
lua_pushboolean(L, 0);
lua_pushstring(L, "invalid-uid");
@@ -322,7 +323,7 @@ int lc_setgid(lua_State* L)
{
gid = lua_tonumber(L, 1);
}
-
+
if(gid>-1)
{
/* Ok, attempt setgid */
@@ -351,20 +352,47 @@ int lc_setgid(lua_State* L)
return 1;
}
}
-
+
/* Seems we couldn't find a valid GID to switch to */
lua_pushboolean(L, 0);
lua_pushstring(L, "invalid-gid");
return 2;
}
+int lc_umask(lua_State* L)
+{
+ char old_mode_string[7];
+ mode_t old_mode = umask(strtoul(luaL_checkstring(L, 1), NULL, 8));
+
+ snprintf(old_mode_string, sizeof(old_mode_string), "%03o", old_mode);
+ old_mode_string[sizeof(old_mode_string)-1] = 0;
+ lua_pushstring(L, old_mode_string);
+
+ return 1;
+}
+
+int lc_mkdir(lua_State* L)
+{
+ int ret = mkdir(luaL_checkstring(L, 1), S_IRUSR | S_IWUSR | S_IXUSR
+ | S_IRGRP | S_IWGRP | S_IXGRP
+ | S_IROTH | S_IXOTH); /* mode 775 */
+
+ lua_pushboolean(L, ret==0);
+ if(ret)
+ {
+ lua_pushstring(L, strerror(errno));
+ return 2;
+ }
+ return 1;
+}
+
/* Like POSIX's setrlimit()/getrlimit() API functions.
- *
+ *
* Syntax:
* pposix.setrlimit( resource, soft limit, hard limit)
- *
+ *
* Any negative limit will be replace with the current limit by an additional call of getrlimit().
- *
+ *
* Example usage:
* pposix.setrlimit("NOFILE", 1000, 2000)
*/
@@ -393,16 +421,16 @@ int lc_setrlimit(lua_State *L) {
lua_pushboolean(L, 0);
lua_pushstring(L, "incorrect-arguments");
}
-
+
resource = luaL_checkstring(L, 1);
softlimit = luaL_checkinteger(L, 2);
hardlimit = luaL_checkinteger(L, 3);
-
+
rid = string2resource(resource);
if (rid != -1) {
struct rlimit lim;
struct rlimit lim_current;
-
+
if (softlimit < 0 || hardlimit < 0) {
if (getrlimit(rid, &lim_current)) {
lua_pushboolean(L, 0);
@@ -410,12 +438,12 @@ int lc_setrlimit(lua_State *L) {
return 2;
}
}
-
+
if (softlimit < 0) lim.rlim_cur = lim_current.rlim_cur;
else lim.rlim_cur = softlimit;
if (hardlimit < 0) lim.rlim_max = lim_current.rlim_max;
else lim.rlim_max = hardlimit;
-
+
if (setrlimit(rid, &lim)) {
lua_pushboolean(L, 0);
lua_pushstring(L, "setrlimit-failed");
@@ -436,13 +464,13 @@ int lc_getrlimit(lua_State *L) {
const char *resource = NULL;
int rid = -1;
struct rlimit lim;
-
+
if (arguments != 1) {
lua_pushboolean(L, 0);
lua_pushstring(L, "invalid-arguments");
return 2;
}
-
+
resource = luaL_checkstring(L, 1);
rid = string2resource(resource);
if (rid != -1) {
@@ -473,50 +501,40 @@ int lc_abort(lua_State* L)
int luaopen_util_pposix(lua_State *L)
{
- lua_newtable(L);
+ luaL_Reg exports[] = {
+ { "abort", lc_abort },
- lua_pushcfunction(L, lc_abort);
- lua_setfield(L, -2, "abort");
+ { "daemonize", lc_daemonize },
- lua_pushcfunction(L, lc_daemonize);
- lua_setfield(L, -2, "daemonize");
+ { "syslog_open", lc_syslog_open },
+ { "syslog_close", lc_syslog_close },
+ { "syslog_log", lc_syslog_log },
+ { "syslog_setminlevel", lc_syslog_setmask },
- lua_pushcfunction(L, lc_syslog_open);
- lua_setfield(L, -2, "syslog_open");
+ { "getpid", lc_getpid },
+ { "getuid", lc_getuid },
+ { "getgid", lc_getgid },
- lua_pushcfunction(L, lc_syslog_close);
- lua_setfield(L, -2, "syslog_close");
+ { "setuid", lc_setuid },
+ { "setgid", lc_setgid },
- lua_pushcfunction(L, lc_syslog_log);
- lua_setfield(L, -2, "syslog_log");
+ { "umask", lc_umask },
- lua_pushcfunction(L, lc_syslog_setmask);
- lua_setfield(L, -2, "syslog_setminlevel");
+ { "mkdir", lc_mkdir },
- lua_pushcfunction(L, lc_getpid);
- lua_setfield(L, -2, "getpid");
+ { "setrlimit", lc_setrlimit },
+ { "getrlimit", lc_getrlimit },
- lua_pushcfunction(L, lc_getuid);
- lua_setfield(L, -2, "getuid");
- lua_pushcfunction(L, lc_getgid);
- lua_setfield(L, -2, "getgid");
+ { NULL, NULL }
+ };
- lua_pushcfunction(L, lc_setuid);
- lua_setfield(L, -2, "setuid");
- lua_pushcfunction(L, lc_setgid);
- lua_setfield(L, -2, "setgid");
-
- lua_pushcfunction(L, lc_setrlimit);
- lua_setfield(L, -2, "setrlimit");
-
- lua_pushcfunction(L, lc_getrlimit);
- lua_setfield(L, -2, "getrlimit");
+ luaL_register(L, "pposix", exports);
lua_pushliteral(L, "pposix");
lua_setfield(L, -2, "_NAME");
lua_pushliteral(L, MODULE_VERSION);
lua_setfield(L, -2, "_VERSION");
-
+
return 1;
};