1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245
|
/*
* Jim - POSIX extension
*
* Copyright 2005 Salvatore Sanfilippo <antirez@invece.org>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE JIM TCL PROJECT ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* JIM TCL PROJECT OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* The views and conclusions contained in the software and documentation
* are those of the authors and should not be interpreted as representing
* official policies, either expressed or implied, of the Jim Tcl Project.
*/
#include <sys/types.h>
#include <sys/time.h>
#include <sys/wait.h>
#include <unistd.h>
#include <string.h>
#include <signal.h>
#include <errno.h>
#include "jimautoconf.h"
#include <jim.h>
#ifdef HAVE_SYS_SYSINFO_H
#include <sys/sysinfo.h>
#endif
static void Jim_PosixSetError(Jim_Interp *interp)
{
Jim_SetResultString(interp, strerror(errno), -1);
}
#if defined(HAVE_FORK)
static int Jim_PosixForkCommand(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
{
pid_t pid;
JIM_NOTUSED(argv);
if (argc != 1) {
Jim_WrongNumArgs(interp, 1, argv, "");
return JIM_ERR;
}
if ((pid = fork()) == -1) {
Jim_PosixSetError(interp);
return JIM_ERR;
}
Jim_SetResultInt(interp, (jim_wide) pid);
return JIM_OK;
}
#endif
/*
* os.wait ?-nohang? pid
*
* An interface to waitpid(2)
*
* Returns a 3 element list.
*
* If -nohang is specified, and the process is still alive, returns
*
* {0 none 0}
*
* If the process does not exist or has already been waited for, returns:
*
* {-1 error <error-description>}
*
* If the process exited normally, returns:
*
* {<pid> exit <exit-status>}
*
* If the process terminated on a signal, returns:
*
* {<pid> signal <signal-number>}
*
* Otherwise (core dump, stopped, continued, ...), returns:
*
* {<pid> other 0}
*/
static int Jim_PosixWaitCommand(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
{
int nohang = 0;
long pid;
int status;
Jim_Obj *listObj;
const char *type;
int value;
if (argc > 1 && Jim_CompareStringImmediate(interp, argv[1], "-nohang")) {
nohang = 1;
}
if (argc != nohang + 2) {
Jim_WrongNumArgs(interp, 1, argv, "?-nohang? pid");
return JIM_ERR;
}
if (Jim_GetLong(interp, argv[nohang + 1], &pid) != JIM_OK) {
return JIM_ERR;
}
pid = waitpid(pid, &status, nohang ? WNOHANG : 0);
listObj = Jim_NewListObj(interp, NULL, 0);
Jim_ListAppendElement(interp, listObj, Jim_NewIntObj(interp, pid));
if (pid < 0) {
type = "error";
value = errno;
}
else if (pid == 0) {
type = "none";
value = 0;
}
else if (WIFEXITED(status)) {
type = "exit";
value = WEXITSTATUS(status);
}
else if (WIFSIGNALED(status)) {
type = "signal";
value = WTERMSIG(status);
}
else {
type = "other";
value = 0;
}
Jim_ListAppendElement(interp, listObj, Jim_NewStringObj(interp, type, -1));
if (pid < 0) {
Jim_ListAppendElement(interp, listObj, Jim_NewStringObj(interp, strerror(value), -1));
}
else {
Jim_ListAppendElement(interp, listObj, Jim_NewIntObj(interp, value));
}
Jim_SetResult(interp, listObj);
return JIM_OK;
}
static int Jim_PosixGetidsCommand(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
{
Jim_Obj *objv[8];
if (argc != 1) {
Jim_WrongNumArgs(interp, 1, argv, "");
return JIM_ERR;
}
objv[0] = Jim_NewStringObj(interp, "uid", -1);
objv[1] = Jim_NewIntObj(interp, getuid());
objv[2] = Jim_NewStringObj(interp, "euid", -1);
objv[3] = Jim_NewIntObj(interp, geteuid());
objv[4] = Jim_NewStringObj(interp, "gid", -1);
objv[5] = Jim_NewIntObj(interp, getgid());
objv[6] = Jim_NewStringObj(interp, "egid", -1);
objv[7] = Jim_NewIntObj(interp, getegid());
Jim_SetResult(interp, Jim_NewListObj(interp, objv, 8));
return JIM_OK;
}
#define JIM_HOST_NAME_MAX 1024
static int Jim_PosixGethostnameCommand(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
{
char *buf;
int rc = JIM_OK;
if (argc != 1) {
Jim_WrongNumArgs(interp, 1, argv, "");
return JIM_ERR;
}
buf = Jim_Alloc(JIM_HOST_NAME_MAX);
if (gethostname(buf, JIM_HOST_NAME_MAX) == -1) {
Jim_PosixSetError(interp);
rc = JIM_ERR;
}
else {
Jim_SetResult(interp, Jim_NewStringObjNoAlloc(interp, buf, -1));
}
return rc;
}
static int Jim_PosixUptimeCommand(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
{
#ifdef HAVE_STRUCT_SYSINFO_UPTIME
struct sysinfo info;
if (argc != 1) {
Jim_WrongNumArgs(interp, 1, argv, "");
return JIM_ERR;
}
if (sysinfo(&info) == -1) {
Jim_PosixSetError(interp);
return JIM_ERR;
}
Jim_SetResultInt(interp, info.uptime);
#else
Jim_SetResultInt(interp, (long)time(NULL));
#endif
return JIM_OK;
}
static int Jim_PosixPidCommand(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
{
if (argc != 1) {
Jim_WrongNumArgs(interp, 1, argv, "");
return JIM_ERR;
}
Jim_SetResultInt(interp, getpid());
return JIM_OK;
}
int Jim_posixInit(Jim_Interp *interp)
{
if (Jim_PackageProvide(interp, "posix", "1.0", JIM_ERRMSG))
return JIM_ERR;
#ifdef HAVE_FORK
Jim_CreateCommand(interp, "os.fork", Jim_PosixForkCommand, NULL, NULL);
#endif
Jim_CreateCommand(interp, "os.wait", Jim_PosixWaitCommand, NULL, NULL);
Jim_CreateCommand(interp, "os.getids", Jim_PosixGetidsCommand, NULL, NULL);
Jim_CreateCommand(interp, "os.gethostname", Jim_PosixGethostnameCommand, NULL, NULL);
Jim_CreateCommand(interp, "os.uptime", Jim_PosixUptimeCommand, NULL, NULL);
Jim_CreateCommand(interp, "pid", Jim_PosixPidCommand, NULL, NULL);
return JIM_OK;
}
|