#include <stdint.h>
#include <stdlib.h>
#include <stdio.h>
-#include <sys/mman.h>
+#ifdef HAVE_SYS_MMAN_H
+#include <sys/mman.h>
+#endif
#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
static PyObject *fadvise_done(PyObject *self, PyObject *args)
{
int fd = -1;
- long long ofs = 0;
- if (!PyArg_ParseTuple(args, "iL", &fd, &ofs))
+ long long llofs, lllen = 0;
+ if (!PyArg_ParseTuple(args, "iLL", &fd, &llofs, &lllen))
return NULL;
+ off_t ofs, len;
+ if (!INTEGRAL_ASSIGNMENT_FITS(&ofs, llofs))
+ return PyErr_Format(PyExc_OverflowError,
+ "fadvise offset overflows off_t");
+ if (!INTEGRAL_ASSIGNMENT_FITS(&len, lllen))
+ return PyErr_Format(PyExc_OverflowError,
+ "fadvise length overflows off_t");
#ifdef POSIX_FADV_DONTNEED
- posix_fadvise(fd, 0, ofs, POSIX_FADV_DONTNEED);
+ posix_fadvise(fd, ofs, len, POSIX_FADV_DONTNEED);
#endif
return Py_BuildValue("");
}
return PyErr_Format(PyExc_OverflowError, "time value too large");
struct tm tm;
+ tzset();
if(localtime_r(&ttime, &tm) == NULL)
return PyErr_SetFromErrno(PyExc_OSError);
#endif /* def HAVE_TM_TM_GMTOFF */
+#ifdef BUP_MINCORE_BUF_TYPE
+static PyObject *bup_mincore(PyObject *self, PyObject *args)
+{
+ const char *src;
+ Py_ssize_t src_ssize;
+ Py_buffer dest;
+ PyObject *py_src_n, *py_src_off, *py_dest_off;
+ if (!PyArg_ParseTuple(args, "s#OOw*O",
+ &src, &src_ssize, &py_src_n, &py_src_off,
+ &dest, &py_dest_off))
+ return NULL;
+
+ unsigned long long src_size, src_n, src_off, dest_size, dest_off;
+ if (!(bup_ullong_from_py(&src_n, py_src_n, "src_n")
+ && bup_ullong_from_py(&src_off, py_src_off, "src_off")
+ && bup_ullong_from_py(&dest_off, py_dest_off, "dest_off")))
+ return NULL;
+
+ if (!INTEGRAL_ASSIGNMENT_FITS(&src_size, src_ssize))
+ return PyErr_Format(PyExc_OverflowError, "invalid src size");
+ unsigned long long src_region_end;
+
+ if (!uadd(&src_region_end, src_off, src_n))
+ return PyErr_Format(PyExc_OverflowError, "(src_off + src_n) too large");
+ if (src_region_end > src_size)
+ return PyErr_Format(PyExc_OverflowError, "region runs off end of src");
+
+ if (!INTEGRAL_ASSIGNMENT_FITS(&dest_size, dest.len))
+ return PyErr_Format(PyExc_OverflowError, "invalid dest size");
+ if (dest_off > dest_size)
+ return PyErr_Format(PyExc_OverflowError, "region runs off end of dest");
+
+ size_t length;
+ if (!INTEGRAL_ASSIGNMENT_FITS(&length, src_n))
+ return PyErr_Format(PyExc_OverflowError, "src_n overflows size_t");
+ int rc = mincore((void *)(src + src_off), src_n,
+ (BUP_MINCORE_BUF_TYPE *) (dest.buf + dest_off));
+ if (rc != 0)
+ return PyErr_SetFromErrno(PyExc_OSError);
+ return Py_BuildValue("O", Py_None);
+}
+#endif /* def BUP_MINCORE_BUF_TYPE */
+
+
static PyMethodDef helper_methods[] = {
{ "write_sparsely", bup_write_sparsely, METH_VARARGS,
"Write buf excepting zeros at the end. Return trailing zero count." },
#ifdef HAVE_TM_TM_GMTOFF
{ "localtime", bup_localtime, METH_VARARGS,
"Return struct_time elements plus the timezone offset and name." },
+#endif
+#ifdef BUP_MINCORE_BUF_TYPE
+ { "mincore", bup_mincore, METH_VARARGS,
+ "For mincore(src, src_n, src_off, dest, dest_off)"
+ " call the system mincore(src + src_off, src_n, &dest[dest_off])." },
#endif
{ NULL, NULL, 0, NULL }, // sentinel
};
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wtautological-compare" // For INTEGER_TO_PY().
+ {
+ PyObject *value;
+ value = INTEGER_TO_PY(INT_MAX);
+ PyObject_SetAttrString(m, "INT_MAX", value);
+ Py_DECREF(value);
+ value = INTEGER_TO_PY(UINT_MAX);
+ PyObject_SetAttrString(m, "UINT_MAX", value);
+ Py_DECREF(value);
+ }
#ifdef HAVE_UTIMENSAT
{
PyObject *value;
Py_DECREF(value);
}
#endif
+#ifdef BUP_HAVE_MINCORE_INCORE
{
PyObject *value;
- const long arg_max = sysconf(_SC_ARG_MAX);
- if (arg_max == -1)
- {
- fprintf(stderr, "Cannot find SC_ARG_MAX, please report a bug.\n");
- exit(1);
- }
- value = INTEGER_TO_PY(arg_max);
- PyObject_SetAttrString(m, "SC_ARG_MAX", value);
+ value = INTEGER_TO_PY(MINCORE_INCORE);
+ PyObject_SetAttrString(m, "MINCORE_INCORE", value);
Py_DECREF(value);
}
+#endif
#pragma clang diagnostic pop // ignored "-Wtautological-compare"
e = getenv("BUP_FORCE_TTY");