os_test.c revision 8f943afc22a6a683b78271836c8ddc462b4824a9
1ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 2ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown#include <stdio.h> 3ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown#include <stdlib.h> 4ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown#include <string.h> 5ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 6ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown// This program determines which OS that this Valgrind installation 7ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown// supports, which depends on what was chosen at configure-time. 8ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown// 9ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown// We return: 108f943afc22a6a683b78271836c8ddc462b4824a9Evgeniy Stepanov// - 0 if the machine matches the asked-for OS and satisfies a 118f943afc22a6a683b78271836c8ddc462b4824a9Evgeniy Stepanov// version requirement, if any 12ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown// - 1 if it doesn't match but does match the name of another OS 13ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown// - 2 if it doesn't match the name of any OS 14ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown// - 3 if there was a usage error (it also prints an error message) 15ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 16ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown// Nb: When updating this file for a new OS, add the name to 17ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown// 'all_OSes' as well as adding go(). 18ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 19ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown#define False 0 20ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown#define True 1 21ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Browntypedef int Bool; 22ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 23ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brownchar* all_OSes[] = { 24ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown "linux", 25ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown "darwin", 26ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown NULL 27ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown}; 28ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 29ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown#if defined(VGO_linux) 308f943afc22a6a683b78271836c8ddc462b4824a9Evgeniy Stepanovstatic Bool matches_version(char *min_version) 318f943afc22a6a683b78271836c8ddc462b4824a9Evgeniy Stepanov{ 328f943afc22a6a683b78271836c8ddc462b4824a9Evgeniy Stepanov int a1, a2, a3, g1, g2, g3; // 'a' = actual; 'g' = given 338f943afc22a6a683b78271836c8ddc462b4824a9Evgeniy Stepanov 348f943afc22a6a683b78271836c8ddc462b4824a9Evgeniy Stepanov if (min_version == NULL) return True; // no version specified 358f943afc22a6a683b78271836c8ddc462b4824a9Evgeniy Stepanov 368f943afc22a6a683b78271836c8ddc462b4824a9Evgeniy Stepanov // get actual version number 378f943afc22a6a683b78271836c8ddc462b4824a9Evgeniy Stepanov FILE *fp = fopen("/proc/sys/kernel/osrelease", "r"); 388f943afc22a6a683b78271836c8ddc462b4824a9Evgeniy Stepanov if (fp == NULL || fscanf(fp, "%d.%d.%d", &a1, &a2, &a3) != 3) return False; 398f943afc22a6a683b78271836c8ddc462b4824a9Evgeniy Stepanov fclose(fp); 408f943afc22a6a683b78271836c8ddc462b4824a9Evgeniy Stepanov 418f943afc22a6a683b78271836c8ddc462b4824a9Evgeniy Stepanov // parse given version number 428f943afc22a6a683b78271836c8ddc462b4824a9Evgeniy Stepanov if (sscanf(min_version, "%d.%d.%d", &g1, &g2, &g3) != 3) return False; 438f943afc22a6a683b78271836c8ddc462b4824a9Evgeniy Stepanov 448f943afc22a6a683b78271836c8ddc462b4824a9Evgeniy Stepanov// printf("actual %d %d %d\n", a1, a2,a3); 458f943afc22a6a683b78271836c8ddc462b4824a9Evgeniy Stepanov// printf("given %d %d %d\n", g1, g2,g3); 46ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 478f943afc22a6a683b78271836c8ddc462b4824a9Evgeniy Stepanov if (a1 > g1) return True; 488f943afc22a6a683b78271836c8ddc462b4824a9Evgeniy Stepanov if (a1 < g1) return False; 498f943afc22a6a683b78271836c8ddc462b4824a9Evgeniy Stepanov if (a2 > g2) return True; 508f943afc22a6a683b78271836c8ddc462b4824a9Evgeniy Stepanov if (a2 < g2) return False; 518f943afc22a6a683b78271836c8ddc462b4824a9Evgeniy Stepanov if (a3 >= g3) return True; 528f943afc22a6a683b78271836c8ddc462b4824a9Evgeniy Stepanov 538f943afc22a6a683b78271836c8ddc462b4824a9Evgeniy Stepanov return False; 548f943afc22a6a683b78271836c8ddc462b4824a9Evgeniy Stepanov} 558f943afc22a6a683b78271836c8ddc462b4824a9Evgeniy Stepanov#endif 568f943afc22a6a683b78271836c8ddc462b4824a9Evgeniy Stepanov 578f943afc22a6a683b78271836c8ddc462b4824a9Evgeniy Stepanovstatic Bool go(char* OS, char *min_version) 588f943afc22a6a683b78271836c8ddc462b4824a9Evgeniy Stepanov{ 598f943afc22a6a683b78271836c8ddc462b4824a9Evgeniy Stepanov#if defined(VGO_linux) 608f943afc22a6a683b78271836c8ddc462b4824a9Evgeniy Stepanov if ( 0 == strcmp( OS, "linux" ) && matches_version( min_version )) return True; 61ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 62ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown#elif defined(VGO_darwin) 63ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown if ( 0 == strcmp( OS, "darwin" ) ) return True; 64ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 65ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown#else 66ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown# error Unknown OS 67ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown#endif // VGO_* 68ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 69ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown return False; 70ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown} 71ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 72ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown//--------------------------------------------------------------------------- 73ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown// main 74ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown//--------------------------------------------------------------------------- 75ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brownint main(int argc, char **argv) 76ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown{ 77ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown int i; 788f943afc22a6a683b78271836c8ddc462b4824a9Evgeniy Stepanov if ( argc < 2 ) { 798f943afc22a6a683b78271836c8ddc462b4824a9Evgeniy Stepanov fprintf( stderr, "usage: os_test <OS-type> [<min-version>]\n" ); 80ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown exit(3); // Usage error. 81ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown } 828f943afc22a6a683b78271836c8ddc462b4824a9Evgeniy Stepanov if (go( argv[1], argv[2] )) { 83ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown return 0; // Matched. 84ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown } 85ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown for (i = 0; NULL != all_OSes[i]; i++) { 86ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown if ( 0 == strcmp( argv[1], all_OSes[i] ) ) 87ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown return 1; // Didn't match, but named another OS. 88ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown } 89ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown return 2; // Didn't match any OSes. 90ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown} 91ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 92