1: /*
  2:       Code for manipulating files.
  3: */
  4: #include <petscsys.h>
  5: #if defined(PETSC_HAVE_PWD_H)
  6:   #include <pwd.h>
  7: #endif
  8: #include <ctype.h>
  9: #include <sys/stat.h>
 10: #if defined(PETSC_HAVE_UNISTD_H)
 11:   #include <unistd.h>
 12: #endif
 13: #if defined(PETSC_HAVE_SYS_UTSNAME_H)
 14:   #include <sys/utsname.h>
 15: #endif
 16: #if defined(PETSC_HAVE_DIRECT_H)
 17:   #include <direct.h>
 18: #endif
 19: #if defined(PETSC_HAVE_SYS_SYSTEMINFO_H)
 20:   #include <sys/systeminfo.h>
 21: #endif
 22: #include <errno.h>

 24: /*@C
 25:   PetscGetWorkingDirectory - Gets the current working directory.

 27:   Not Collective

 29:   Input Parameter:
 30: . len - maximum length of `path`

 32:   Output Parameter:
 33: . path - holds the result value. The string should be long enough to hold the path, for example, `PETSC_MAX_PATH_LEN`

 35:   Level: developer

 37: .seealso: `PetscGetTmp()`, `PetscSharedTmp()`, `PetscSharedWorkingDirectory()`, `PetscGetHomeDirectory()`
 38: @*/
 39: PetscErrorCode PetscGetWorkingDirectory(char path[], size_t len)
 40: {
 41:   PetscFunctionBegin;
 42: #if defined(PETSC_HAVE_GETCWD)
 43:   PetscCheck(getcwd(path, len), PETSC_COMM_SELF, PETSC_ERR_LIB, "Error in getcwd() due to \"%s\"", strerror(errno));
 44: #elif defined(PETSC_HAVE__GETCWD)
 45:   _getcwd(path, len);
 46: #else
 47:   SETERRQ(PETSC_COMM_SELF, PETSC_ERR_SUP_SYS, "Could not find getcwd()");
 48: #endif
 49:   PetscFunctionReturn(PETSC_SUCCESS);
 50: }