1 /* uname.c - return system name 2 * 3 * Copyright 2008 Rob Landley <rob (at) landley.net> 4 * 5 * See http://opengroup.org/onlinepubs/9699919799/utilities/uname.html 6 7 USE_UNAME(NEWTOY(uname, "oamvrns[+os]", TOYFLAG_BIN)) 8 9 config UNAME 10 bool "uname" 11 default y 12 help 13 usage: uname [-asnrvm] 14 15 Print system information. 16 17 -s System name 18 -n Network (domain) name 19 -r Kernel Release number 20 -v Kernel Version 21 -m Machine (hardware) name 22 -a All of the above 23 */ 24 25 #define FOR_uname 26 #include "toys.h" 27 28 // If a 32 bit x86 build environment working in a chroot under an x86-64 29 // kernel returns x86_64 for -m it confuses ./configure. Special case it. 30 31 #if defined(__i686__) 32 #define GROSS "i686" 33 #elif defined(__i586__) 34 #define GROSS "i586" 35 #elif defined(__i486__) 36 #define GROSS "i486" 37 #elif defined(__i386__) 38 #define GROSS "i386" 39 #endif 40 41 void uname_main(void) 42 { 43 int i, flags = toys.optflags, needspace=0; 44 struct utsname u; 45 46 uname(&u); 47 48 if (!flags) flags = FLAG_s; 49 for (i=0; i<5; i++) { 50 char *c = ((char *) &u)+(sizeof(u.sysname)*i); 51 52 if (flags & ((1<<i)|FLAG_a)) { 53 int len = strlen(c); 54 55 // This problem originates in autoconf, so of course the solution 56 // is horribly ugly. 57 #ifdef GROSS 58 if (i==4 && !strcmp(c,"x86_64")) { 59 printf(GROSS); 60 continue; 61 } 62 #endif 63 64 if (needspace++) { 65 // We can't decrement on the first entry, because 66 // needspace would be 0 67 *(--c)=' '; 68 len++; 69 } 70 xwrite(1, c, len); 71 } 72 } 73 putchar('\n'); 74 } 75
