Ruby 2.7.0p0(2019-12-25revision647ee6f091eafcce70ffb75ddf7e121e192ab217)

rubystub.c
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1 #include "internal.h"
2 #if defined HAVE_DLADDR
3 #include <dlfcn.h>
4 #endif
5 #if defined HAVE_SYS_PARAM_H
6 #include <sys/param.h>
7 #endif
8 static void* stub_options(int argc, char **argv);
9 #define ruby_options stub_options
10 #include <main.c>
11 #undef ruby_options
12
13 void *
14 stub_options(int argc, char **argv)
15 {
16 char xflag[] = "-x";
17 char *xargv[4] = {NULL, xflag};
18 char *cmd = argv[0];
19 void *ret;
20
21 #if defined __CYGWIN__ || defined _WIN32
22 /* GetCommandLineW should contain the accessible path,
23 * use argv[0] as is */
24 #elif defined __linux__
25 {
26 char selfexe[MAXPATHLEN];
27 ssize_t len = readlink("/proc/self/exe", selfexe, sizeof(selfexe));
28 if (len < 0) {
29 perror("readlink(\"/proc/self/exe\")");
30 return NULL;
31 }
32 selfexe[len] = '\0';
33 cmd = selfexe;
34 }
35 #elif defined HAVE_DLADDR
36 {
37 Dl_info dli;
38 if (!dladdr(stub_options, &dli)) {
39 perror("dladdr");
40 return NULL;
41 }
42 cmd = (char *)dli.dli_fname;
43 }
44 #endif
45
46 #ifndef HAVE_SETPROCTITLE
47 /* argc and argv must be the original */
48 ruby_init_setproctitle(argc, argv);
49 #endif
50
51 /* set script with -x option */
52 /* xargv[0] is NULL not to re-initialize setproctitle again */
53 xargv[2] = cmd;
54 ret = ruby_options(3, xargv);
55
56 /* set all arguments to ARGV */
57 ruby_set_argv(argc - 1, argv + 1);
58
59 return ret;
60 }
perror
void perror(const char *)
ssize_t
_ssize_t ssize_t
Definition: rb_mjit_min_header-2.7.0.h:1329
NULL
#define NULL
Definition: _sdbm.c:101
MAXPATHLEN
#define MAXPATHLEN
Definition: dln.c:69
main.c
ruby_set_argv
void ruby_set_argv(int, char **)
Definition: ruby.c:2366
internal.h
argv
char ** argv
Definition: ruby.c:223
ruby_init_setproctitle
void ruby_init_setproctitle(int argc, char *argv[])
readlink
ssize_t readlink(const char *, char *, size_t)
Definition: win32.c:5099
argc
int argc
Definition: ruby.c:222
len
uint8_t len
Definition: escape.c:17
ruby_options
#define ruby_options
Definition: rubystub.c:9