mirror of https://github.com/python/cpython
Patch from M.-A. Lemburg:
Python on UNIX now trusts PYTHONHOME unconditionally Modules/getpath.c: Landmark changed to os.py. Setting PYTHONHOME now unconditionally sets sys.prefix (and sys.exec_prefix). No further checks are done whether the standard lib can be found in that location or not. This is in sync with the PC subdir getpath implementations. PC/getpathp.c: Landmark changed to os.py. PC/os2vacpp/getpathp.c: Landmark changed to os.py. Note: BAW's checkin on exceptions.c eliminates earlier concerns about a bogus PYTHONHOME value leading to a core dump. Instead it causes a useless sys.path and prevents imports.
This commit is contained in:
Jeremy Hylton
parent
b80a777859
commit
847a9968e9
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@ -87,7 +87,7 @@ PERFORMANCE OF THIS SOFTWARE.
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* Modules/Setup. If the landmark is found, we're done.
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*
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* For the remaining steps, the prefix landmark will always be
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* lib/python$VERSION/string.py and the exec_prefix will always be
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* lib/python$VERSION/os.py and the exec_prefix will always be
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* lib/python$VERSION/lib-dynload, where $VERSION is Python's version
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* number as supplied by the Makefile. Note that this means that no more
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* build directory checking is performed; if the first step did not find
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@ -150,7 +150,7 @@ PERFORMANCE OF THIS SOFTWARE.
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#endif
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#ifndef LANDMARK
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#define LANDMARK "string.py"
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#define LANDMARK "os.py"
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#endif
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static char prefix[MAXPATHLEN+1];
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@ -265,6 +265,18 @@ search_for_prefix(argv0_path, home)
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int n;
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char *vpath;
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/* If PYTHONHOME is set, we believe it unconditionally */
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if (home) {
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char *delim;
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strcpy(prefix, home);
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delim = strchr(prefix, DELIM);
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if (delim)
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*delim = '\0';
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joinpath(prefix, lib_python);
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joinpath(prefix, LANDMARK);
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return 1;
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}
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/* Check to see if argv[0] is in the build directory */
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strcpy(prefix, argv0_path);
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joinpath(prefix, "Modules/Setup");
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@ -290,19 +302,6 @@ search_for_prefix(argv0_path, home)
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return -1;
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}
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if (home) {
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/* Check $PYTHONHOME */
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char *delim;
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strcpy(prefix, home);
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delim = strchr(prefix, DELIM);
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if (delim)
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*delim = '\0';
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joinpath(prefix, lib_python);
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joinpath(prefix, LANDMARK);
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if (ismodule(prefix))
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return 1;
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}
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/* Search from argv0_path, until root is found */
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strcpy(prefix, argv0_path);
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do {
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@ -334,16 +333,8 @@ search_for_exec_prefix(argv0_path, home)
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{
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int n;
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/* Check to see if argv[0] is in the build directory */
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strcpy(exec_prefix, argv0_path);
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joinpath(exec_prefix, "Modules/Setup");
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if (isfile(exec_prefix)) {
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reduce(exec_prefix);
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return -1;
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}
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/* If PYTHONHOME is set, we believe it unconditionally */
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if (home) {
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/* Check $PYTHONHOME */
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char *delim;
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delim = strchr(home, DELIM);
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if (delim)
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@ -352,10 +343,17 @@ search_for_exec_prefix(argv0_path, home)
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strcpy(exec_prefix, home);
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joinpath(exec_prefix, lib_python);
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joinpath(exec_prefix, "lib-dynload");
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if (isdir(exec_prefix))
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return 1;
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}
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/* Check to see if argv[0] is in the build directory */
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strcpy(exec_prefix, argv0_path);
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joinpath(exec_prefix, "Modules/Setup");
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if (isfile(exec_prefix)) {
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reduce(exec_prefix);
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return -1;
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}
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/* Search from argv0_path, until root is found */
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strcpy(exec_prefix, argv0_path);
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do {
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@ -53,7 +53,7 @@ PERFORMANCE OF THIS SOFTWARE.
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* We attempt to locate the "Python Home" - if the PYTHONHOME env var
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is set, we believe it. Otherwise, we use the path of our host .EXE's
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to try and locate our "landmark" (lib\\string.py) and deduce our home.
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to try and locate our "landmark" (lib\\os.py) and deduce our home.
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- If we DO have a Python Home: The relevant sub-directories (Lib,
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plat-win, lib-tk, etc) are based on the Python Home
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- If we DO NOT have a Python Home, the core Python Path is
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@ -110,7 +110,7 @@ PERFORMANCE OF THIS SOFTWARE.
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*/
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#ifndef LANDMARK
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#define LANDMARK "lib\\string.py"
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#define LANDMARK "lib\\os.py"
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#endif
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static char prefix[MAXPATHLEN+1];
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@ -68,14 +68,14 @@ extern BOOL PyWin_IsWin32s();
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*
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* Otherwise, if there is a PYTHONPATH environment variable, we return that.
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*
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* Otherwise we try to find $progpath/lib/string.py, and if found, then
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* Otherwise we try to find $progpath/lib/os.py, and if found, then
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* root is $progpath/lib, and we return Python path as compiled PYTHONPATH
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* with all "./lib" replaced by $root (as above).
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*
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*/
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#ifndef LANDMARK
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#define LANDMARK "lib\\string.py"
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#define LANDMARK "lib\\os.py"
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#endif
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static char prefix[MAXPATHLEN+1];
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