1 #define PETSC_DLL 2 /* 3 Code for manipulating files. 4 */ 5 #include "petscsys.h" 6 #if defined(PETSC_HAVE_STDLIB_H) 7 #include <stdlib.h> 8 #endif 9 #if defined(PETSC_HAVE_SYS_UTSNAME_H) 10 #include <sys/utsname.h> 11 #endif 12 #if defined(PETSC_HAVE_WINDOWS_H) 13 #include <windows.h> 14 #endif 15 #if defined(PETSC_HAVE_SYS_SYSTEMINFO_H) 16 #include <sys/systeminfo.h> 17 #endif 18 #if defined(PETSC_HAVE_UNISTD_H) 19 #include <unistd.h> 20 #endif 21 #if defined(PETSC_HAVE_NETDB_H) 22 #include <netdb.h> 23 #endif 24 25 #undef __FUNCT__ 26 #define __FUNCT__ "PetscGetHostName" 27 /*@C 28 PetscGetHostName - Returns the name of the host. This attempts to 29 return the entire Internet name. It may not return the same name 30 as MPI_Get_processor_name(). 31 32 Not Collective 33 34 Input Parameter: 35 . nlen - length of name 36 37 Output Parameter: 38 . name - contains host name. Must be long enough to hold the name 39 This is the fully qualified name, including the domain. 40 41 Level: developer 42 43 Concepts: machine name 44 Concepts: host name 45 46 .seealso: PetscGetUserName() 47 @*/ 48 PetscErrorCode PETSC_DLLEXPORT PetscGetHostName(char name[],size_t nlen) 49 { 50 char *domain; 51 PetscErrorCode ierr; 52 PetscTruth flag; 53 #if defined(PETSC_HAVE_UNAME) && !defined(PETSC_HAVE_GETCOMPUTERNAME) 54 struct utsname utname; 55 #endif 56 57 PetscFunctionBegin; 58 #if defined(PETSC_HAVE_GETCOMPUTERNAME) 59 { 60 size_t nnlen = nlen; 61 GetComputerName((LPTSTR)name,(LPDWORD)(&nnlen)); 62 } 63 #elif defined(PETSC_HAVE_UNAME) 64 uname(&utname); 65 ierr = PetscStrncpy(name,utname.nodename,nlen);CHKERRQ(ierr); 66 #elif defined(PETSC_HAVE_GETHOSTNAME) 67 gethostname(name,nlen); 68 #elif defined(PETSC_HAVE_SYSINFO_3ARG) 69 sysinfo(SI_HOSTNAME,name,nlen); 70 #endif 71 /* if there was not enough room then system call will not null terminate name */ 72 name[nlen-1] = 0; 73 74 /* See if this name includes the domain */ 75 ierr = PetscStrchr(name,'.',&domain);CHKERRQ(ierr); 76 if (!domain) { 77 size_t l,ll; 78 ierr = PetscStrlen(name,&l);CHKERRQ(ierr); 79 if (l == nlen-1) PetscFunctionReturn(0); 80 name[l++] = '.'; 81 #if defined(PETSC_HAVE_SYSINFO_3ARG) 82 sysinfo(SI_SRPC_DOMAIN,name+l,nlen-l); 83 #elif defined(PETSC_HAVE_GETDOMAINNAME) 84 getdomainname(name+l,nlen - l); 85 #endif 86 /* check if domain name is not a dnsdomainname and nuke it */ 87 ierr = PetscStrlen(name,&ll);CHKERRQ(ierr); 88 if (ll > 4) { 89 ierr = PetscStrcmp(name + ll - 4,".edu",&flag);CHKERRQ(ierr); 90 if (!flag) { 91 ierr = PetscStrcmp(name + ll - 4,".com",&flag);CHKERRQ(ierr); 92 if (!flag) { 93 ierr = PetscStrcmp(name + ll - 4,".net",&flag);CHKERRQ(ierr); 94 if (!flag) { 95 ierr = PetscStrcmp(name + ll - 4,".org",&flag);CHKERRQ(ierr); 96 if (!flag) { 97 ierr = PetscStrcmp(name + ll - 4,".mil",&flag);CHKERRQ(ierr); 98 if (!flag) { 99 ierr = PetscInfo1(0,"Rejecting domainname, likely is NIS %s\n",name);CHKERRQ(ierr); 100 name[l-1] = 0; 101 } 102 } 103 } 104 } 105 } 106 } 107 } 108 PetscFunctionReturn(0); 109 } 110