xref: /trunk/main/soltools/checkdll/checkdll.c (revision cdf0e10c)
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27*cdf0e10cSrcweir 
28*cdf0e10cSrcweir 
29*cdf0e10cSrcweir #include <stdio.h>
30*cdf0e10cSrcweir #include <string.h>
31*cdf0e10cSrcweir #include <errno.h>
32*cdf0e10cSrcweir #include <unistd.h>
33*cdf0e10cSrcweir #include <dlfcn.h>
34*cdf0e10cSrcweir 
35*cdf0e10cSrcweir /*
36*cdf0e10cSrcweir  * NOTE: Since no one is really interested in correct unload behavior I've
37*cdf0e10cSrcweir  * disabled the shared library unload check. If you want to reenable it comment
38*cdf0e10cSrcweir  * the following line out
39*cdf0e10cSrcweir  */
40*cdf0e10cSrcweir #define NO_UNLOAD_CHECK
41*cdf0e10cSrcweir 
42*cdf0e10cSrcweir static const char *pprog_name 	= "checkdll";
43*cdf0e10cSrcweir static const char *psymbol		= "GetVersionInfo";
44*cdf0e10cSrcweir 
45*cdf0e10cSrcweir void usage()
46*cdf0e10cSrcweir {
47*cdf0e10cSrcweir 	fprintf(stderr, "usage: %s [-s] <dllname>\n", pprog_name);
48*cdf0e10cSrcweir 	return;
49*cdf0e10cSrcweir }
50*cdf0e10cSrcweir 
51*cdf0e10cSrcweir int main(int argc, char *argv[])
52*cdf0e10cSrcweir {
53*cdf0e10cSrcweir 	int 	rc;
54*cdf0e10cSrcweir     int     silent=0;
55*cdf0e10cSrcweir 	void	*phandle;
56*cdf0e10cSrcweir 	char 	*(*pfun)(void);
57*cdf0e10cSrcweir 
58*cdf0e10cSrcweir 	if ( argc < 2 || argc > 4) {
59*cdf0e10cSrcweir 		usage();
60*cdf0e10cSrcweir 		return 1;
61*cdf0e10cSrcweir 	}
62*cdf0e10cSrcweir 
63*cdf0e10cSrcweir     if ( !strcmp(argv[1],"-s") ) {
64*cdf0e10cSrcweir         silent = 1;
65*cdf0e10cSrcweir         ++argv, --argc;
66*cdf0e10cSrcweir     }
67*cdf0e10cSrcweir 
68*cdf0e10cSrcweir 	if ( (rc = access( argv[1], R_OK )) == -1 ) {
69*cdf0e10cSrcweir 		fprintf(stderr, "%s: ERROR: %s: %s\n",
70*cdf0e10cSrcweir                 pprog_name, argv[1], strerror(errno));
71*cdf0e10cSrcweir 		return 2;
72*cdf0e10cSrcweir 	}
73*cdf0e10cSrcweir 
74*cdf0e10cSrcweir 	if (!silent) printf("Checking DLL %s ...", argv[1]);
75*cdf0e10cSrcweir 	fflush(stdout);
76*cdf0e10cSrcweir 
77*cdf0e10cSrcweir 	if ( (phandle = dlopen(argv[1], RTLD_NOW)) != NULL ) {
78*cdf0e10cSrcweir 		if  ( (pfun = (char *(*)(void))dlsym(phandle, psymbol)) != NULL ) {
79*cdf0e10cSrcweir 			if (!silent) printf(": ok\n");
80*cdf0e10cSrcweir 		}
81*cdf0e10cSrcweir 		else
82*cdf0e10cSrcweir 		{
83*cdf0e10cSrcweir 			printf(": WARNING: %s\n", dlerror());
84*cdf0e10cSrcweir 		}
85*cdf0e10cSrcweir #ifdef NO_UNLOAD_CHECK
86*cdf0e10cSrcweir 		_exit(0);
87*cdf0e10cSrcweir #else
88*cdf0e10cSrcweir 		dlclose(phandle);
89*cdf0e10cSrcweir #endif
90*cdf0e10cSrcweir 		return 0;
91*cdf0e10cSrcweir 	}
92*cdf0e10cSrcweir 
93*cdf0e10cSrcweir 	printf(": ERROR: %s\n", dlerror());
94*cdf0e10cSrcweir 	return 3;
95*cdf0e10cSrcweir }
96*cdf0e10cSrcweir 
97*cdf0e10cSrcweir 
98