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 .seealso: PetscGetUserName() 47 @*/ 48 PetscErrorCode PetscGetHostName(char name[],size_t nlen) 49 { 50 char *domain; 51 PetscErrorCode ierr; 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 if (getdomainname(name+l,nlen - l)) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_SYS,"getdomainname()"); 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 const char *suffixes[] = {".edu",".com",".net",".org",".mil",0}; 89 PetscInt index; 90 ierr = PetscStrendswithwhich(name,suffixes,&index);CHKERRQ(ierr); 91 if (!suffixes[index]) { 92 ierr = PetscInfo1(0,"Rejecting domainname, likely is NIS %s\n",name);CHKERRQ(ierr); 93 name[l-1] = 0; 94 } 95 } 96 } 97 PetscFunctionReturn(0); 98 } 99