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