1 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 Fortran Version: 47 In Fortran this routine has the format 48 49 $ character*(64) name 50 $ call PetscGetHostName(name,ierr) 51 52 .seealso: PetscGetUserName(),PetscGetArchType() 53 @*/ 54 PetscErrorCode PetscGetHostName(char name[],size_t nlen) 55 { 56 char *domain; 57 PetscErrorCode ierr; 58 #if defined(PETSC_HAVE_UNAME) && !defined(PETSC_HAVE_GETCOMPUTERNAME) 59 struct utsname utname; 60 #endif 61 62 PetscFunctionBegin; 63 #if defined(PETSC_HAVE_GETCOMPUTERNAME) 64 { 65 size_t nnlen = nlen; 66 GetComputerName((LPTSTR)name,(LPDWORD)(&nnlen)); 67 } 68 #elif defined(PETSC_HAVE_UNAME) 69 uname(&utname); 70 ierr = PetscStrncpy(name,utname.nodename,nlen);CHKERRQ(ierr); 71 #elif defined(PETSC_HAVE_GETHOSTNAME) 72 gethostname(name,nlen); 73 #elif defined(PETSC_HAVE_SYSINFO_3ARG) 74 sysinfo(SI_HOSTNAME,name,nlen); 75 #endif 76 /* if there was not enough room then system call will not null terminate name */ 77 name[nlen-1] = 0; 78 79 /* See if this name includes the domain */ 80 ierr = PetscStrchr(name,'.',&domain);CHKERRQ(ierr); 81 if (!domain) { 82 size_t l,ll; 83 ierr = PetscStrlen(name,&l);CHKERRQ(ierr); 84 if (l == nlen-1) PetscFunctionReturn(0); 85 name[l++] = '.'; 86 #if defined(PETSC_HAVE_SYSINFO_3ARG) 87 sysinfo(SI_SRPC_DOMAIN,name+l,nlen-l); 88 #elif defined(PETSC_HAVE_GETDOMAINNAME) 89 if (getdomainname(name+l,nlen - l)) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_SYS,"getdomainname()"); 90 #endif 91 /* check if domain name is not a dnsdomainname and nuke it */ 92 ierr = PetscStrlen(name,&ll);CHKERRQ(ierr); 93 if (ll > 4) { 94 const char *suffixes[] = {".edu",".com",".net",".org",".mil",0}; 95 PetscInt index; 96 ierr = PetscStrendswithwhich(name,suffixes,&index);CHKERRQ(ierr); 97 if (!suffixes[index]) { 98 ierr = PetscInfo1(0,"Rejecting domainname, likely is NIS %s\n",name);CHKERRQ(ierr); 99 name[l-1] = 0; 100 } 101 } 102 } 103 PetscFunctionReturn(0); 104 } 105