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Issue #11391: Writing to a mmap object created with

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`mmap.PROT_READ|mmap.PROT_EXEC` would segfault instead of raising a
TypeError.  Patch by Charles-François Natali.
This commit is contained in:
Antoine Pitrou 2011-03-06 02:03:34 +01:00
parent 414596ae8d
commit d6f3a3e3a8
3 changed files with 22 additions and 5 deletions
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15
Modules/mmapmodule.c
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@ -1154,17 +1154,22 @@ new_mmap_object(PyTypeObject *type, PyObject *args, PyObject *kwdict)
prot = PROT_READ | PROT_WRITE;
break;
case ACCESS_DEFAULT:
/* use the specified or default values of flags and prot */
/* map prot to access type */
if ((prot & PROT_READ) && (prot & PROT_WRITE)) {
/* ACCESS_DEFAULT */
}
else if (prot & PROT_WRITE) {
access = ACCESS_WRITE;
}
else {
access = ACCESS_READ;
}
break;
default:
return PyErr_Format(PyExc_ValueError,
"mmap invalid access parameter.");
}
if (prot == PROT_READ) {
access = ACCESS_READ;
}
#ifdef HAVE_FSTAT
# ifdef __VMS
/* on OpenVMS we must ensure that all bytes are written to the file */