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