#include <sys/ioctl.h>
#endif
+#ifdef HAVE_TM_TM_GMTOFF
+#include <time.h>
+#endif
+
#include "bupsplit.h"
#if defined(FS_IOC_GETFLAGS) && defined(FS_IOC_SETFLAGS)
#define BUP_HAVE_FILE_ATTRS 1
#endif
+/*
+ * Check for incomplete UTIMENSAT support (NetBSD 6), and if so,
+ * pretend we don't have it.
+ */
+#if !defined(AT_FDCWD) || !defined(AT_SYMLINK_NOFOLLOW)
+#undef HAVE_UTIMENSAT
+#endif
+
#ifndef FS_NOCOW_FL
// Of course, this assumes it's a bitfield value.
#define FS_NOCOW_FL 0
static int istty2 = 0;
+
+#ifndef htonll
+// This function should technically be macro'd out if it's going to be used
+// more than ocasionally. As of this writing, it'll actually never be called
+// in real world bup scenarios (because our packs are < MAX_INT bytes).
+static uint64_t htonll(uint64_t value)
+{
+ static const int endian_test = 42;
+
+ if (*(char *)&endian_test == endian_test) // LSB-MSB
+ return ((uint64_t)htonl(value & 0xFFFFFFFF) << 32) | htonl(value >> 32);
+ return value; // already in network byte order MSB-LSB
+}
+#endif
+
+
+#define INTEGRAL_ASSIGNMENT_FITS(dest, src) \
+ ({ \
+ *(dest) = (src); \
+ *(dest) == (src) && (*(dest) < 1) == ((src) < 1); \
+ })
+
+
+// At the moment any code that calls INTGER_TO_PY() will have to
+// disable -Wtautological-compare for clang. See below.
+
+#define INTEGER_TO_PY(x) \
+ (((x) >= 0) ? PyLong_FromUnsignedLongLong(x) : PyLong_FromLongLong(x))
+
+
+static int bup_ulong_from_pyint(unsigned long *x, PyObject *py,
+ const char *name)
+{
+ const long tmp = PyInt_AsLong(py);
+ if (tmp == -1 && PyErr_Occurred())
+ {
+ if (PyErr_ExceptionMatches(PyExc_OverflowError))
+ PyErr_Format(PyExc_OverflowError, "%s too big for unsigned long",
+ name);
+ return 0;
+ }
+ if (tmp < 0)
+ {
+ PyErr_Format(PyExc_OverflowError,
+ "negative %s cannot be converted to unsigned long", name);
+ return 0;
+ }
+ *x = tmp;
+ return 1;
+}
+
+
+static int bup_ulong_from_py(unsigned long *x, PyObject *py, const char *name)
+{
+ if (PyInt_Check(py))
+ return bup_ulong_from_pyint(x, py, name);
+
+ if (!PyLong_Check(py))
+ {
+ PyErr_Format(PyExc_TypeError, "expected integer %s", name);
+ return 0;
+ }
+
+ const unsigned long tmp = PyLong_AsUnsignedLong(py);
+ if (PyErr_Occurred())
+ {
+ if (PyErr_ExceptionMatches(PyExc_OverflowError))
+ PyErr_Format(PyExc_OverflowError, "%s too big for unsigned long",
+ name);
+ return 0;
+ }
+ *x = tmp;
+ return 1;
+}
+
+
+static int bup_uint_from_py(unsigned int *x, PyObject *py, const char *name)
+{
+ unsigned long tmp;
+ if (!bup_ulong_from_py(&tmp, py, name))
+ return 0;
+
+ if (tmp > UINT_MAX)
+ {
+ PyErr_Format(PyExc_OverflowError, "%s too big for unsigned int", name);
+ return 0;
+ }
+ *x = tmp;
+ return 1;
+}
+
+static int bup_ullong_from_py(unsigned PY_LONG_LONG *x, PyObject *py,
+ const char *name)
+{
+ if (PyInt_Check(py))
+ {
+ unsigned long tmp;
+ if (bup_ulong_from_pyint(&tmp, py, name))
+ {
+ *x = tmp;
+ return 1;
+ }
+ return 0;
+ }
+
+ if (!PyLong_Check(py))
+ {
+ PyErr_Format(PyExc_TypeError, "integer argument expected for %s", name);
+ return 0;
+ }
+
+ const unsigned PY_LONG_LONG tmp = PyLong_AsUnsignedLongLong(py);
+ if (tmp == (unsigned long long) -1 && PyErr_Occurred())
+ {
+ if (PyErr_ExceptionMatches(PyExc_OverflowError))
+ PyErr_Format(PyExc_OverflowError,
+ "%s too big for unsigned long long", name);
+ return 0;
+ }
+ *x = tmp;
+ return 1;
+}
+
+
// Probably we should use autoconf or something and set HAVE_PY_GETARGCARGV...
#if __WIN32__ || __CYGWIN__
#endif // not __WIN32__ or __CYGWIN__
+static unsigned long long count_leading_zeros(const unsigned char * const buf,
+ unsigned long long len)
+{
+ const unsigned char *cur = buf;
+ while(len-- && *cur == 0)
+ cur++;
+ return cur - buf;
+}
+
+
+static int write_all(int fd, const void *buf, const size_t count)
+{
+ size_t written = 0;
+ while (written < count)
+ {
+ const ssize_t rc = write(fd, buf + written, count - written);
+ if (rc == -1)
+ return -1;
+ written += rc;
+ }
+ return 0;
+}
+
+
+static int uadd(unsigned long long *dest,
+ const unsigned long long x,
+ const unsigned long long y)
+{
+ const unsigned long long result = x + y;
+ if (result < x || result < y)
+ return 0;
+ *dest = result;
+ return 1;
+}
+
+static PyObject *append_sparse_region(const int fd, unsigned long long n)
+{
+ while(n)
+ {
+ off_t new_off;
+ if (!INTEGRAL_ASSIGNMENT_FITS(&new_off, n))
+ new_off = INT_MAX;
+ const off_t off = lseek(fd, new_off, SEEK_CUR);
+ if (off == (off_t) -1)
+ return PyErr_SetFromErrno(PyExc_IOError);
+ n -= new_off;
+ }
+ return NULL;
+}
+
+
+static PyObject *bup_write_sparsely(PyObject *self, PyObject *args)
+{
+ int fd;
+ unsigned char *buf = NULL;
+ Py_ssize_t sbuf_len;
+ PyObject *py_min_sparse_len, *py_prev_sparse_len;
+ if (!PyArg_ParseTuple(args, "it#OO",
+ &fd, &buf, &sbuf_len,
+ &py_min_sparse_len, &py_prev_sparse_len))
+ return NULL;
+ unsigned long long min_sparse_len, prev_sparse_len, buf_len;
+ if (!bup_ullong_from_py(&min_sparse_len, py_min_sparse_len, "min_sparse_len"))
+ return NULL;
+ if (!bup_ullong_from_py(&prev_sparse_len, py_prev_sparse_len, "prev_sparse_len"))
+ return NULL;
+ if (sbuf_len < 0)
+ return PyErr_Format(PyExc_ValueError, "negative bufer length");
+ if (!INTEGRAL_ASSIGNMENT_FITS(&buf_len, sbuf_len))
+ return PyErr_Format(PyExc_OverflowError, "buffer length too large");
+
+ // The value of zeros_read indicates the number of zeros read from
+ // buf that haven't been accounted for yet (with respect to cur),
+ // while zeros indicates the total number of pending zeros, which
+ // could be larger in the first iteration if prev_sparse_len
+ // wasn't zero.
+ int rc;
+ unsigned long long unexamined = buf_len;
+ unsigned char *block_start = buf, *cur = buf;
+ unsigned long long zeros, zeros_read = count_leading_zeros(cur, unexamined);
+ assert(zeros_read <= unexamined);
+ unexamined -= zeros_read;
+ if (!uadd(&zeros, prev_sparse_len, zeros_read))
+ {
+ PyObject *err = append_sparse_region(fd, prev_sparse_len);
+ if (err != NULL)
+ return err;
+ zeros = zeros_read;
+ }
+
+ while(unexamined)
+ {
+ if (zeros < min_sparse_len)
+ cur += zeros_read;
+ else
+ {
+ rc = write_all(fd, block_start, cur - block_start);
+ if (rc)
+ return PyErr_SetFromErrno(PyExc_IOError);
+ PyObject *err = append_sparse_region(fd, zeros);
+ if (err != NULL)
+ return err;
+ cur += zeros_read;
+ block_start = cur;
+ }
+ // Pending zeros have ether been made sparse, or are going to
+ // be rolled into the next non-sparse block since we know we
+ // now have at least one unexamined non-zero byte.
+ assert(unexamined && *cur != 0);
+ zeros = zeros_read = 0;
+ while (unexamined && *cur != 0)
+ {
+ cur++; unexamined--;
+ }
+ if (unexamined)
+ {
+ zeros_read = count_leading_zeros(cur, unexamined);
+ assert(zeros_read <= unexamined);
+ unexamined -= zeros_read;
+ zeros = zeros_read;
+ }
+ }
+ rc = write_all(fd, block_start, cur - block_start);
+ if (rc)
+ return PyErr_SetFromErrno(PyExc_IOError);
+ return PyLong_FromUnsignedLongLong(zeros);
+}
+
+
static PyObject *selftest(PyObject *self, PyObject *args)
{
if (!PyArg_ParseTuple(args, ""))
static PyObject *merge_into(PyObject *self, PyObject *args)
{
- PyObject *ilist = NULL;
+ PyObject *py_total, *ilist = NULL;
unsigned char *fmap = NULL;
struct sha *sha_ptr, *sha_start = NULL;
uint32_t *table_ptr, *name_ptr, *name_start;
int num_i;
int last_i;
- if (!PyArg_ParseTuple(args, "w#iIO", &fmap, &flen, &bits, &total, &ilist))
+ if (!PyArg_ParseTuple(args, "w#iOO",
+ &fmap, &flen, &bits, &py_total, &ilist))
return NULL;
+ if (!bup_uint_from_py(&total, py_total, "total"))
+ return NULL;
+
num_i = PyList_Size(ilist);
idxs = (struct idx **)PyMem_Malloc(num_i * sizeof(struct idx *));
return PyLong_FromUnsignedLong(count);
}
-// This function should technically be macro'd out if it's going to be used
-// more than ocasionally. As of this writing, it'll actually never be called
-// in real world bup scenarios (because our packs are < MAX_INT bytes).
-static uint64_t htonll(uint64_t value)
-{
- static const int endian_test = 42;
-
- if (*(char *)&endian_test == endian_test) // LSB-MSB
- return ((uint64_t)htonl(value & 0xFFFFFFFF) << 32) | htonl(value >> 32);
- return value; // already in network byte order MSB-LSB
-}
-
#define FAN_ENTRIES 256
static PyObject *write_idx(PyObject *self, PyObject *args)
{
char *filename = NULL;
- PyObject *idx = NULL;
+ PyObject *py_total, *idx = NULL;
PyObject *part;
unsigned char *fmap = NULL;
Py_ssize_t flen = 0;
uint64_t *ofs64_ptr;
struct sha *sha_ptr;
- if (!PyArg_ParseTuple(args, "sw#OI", &filename, &fmap, &flen, &idx, &total))
+ if (!PyArg_ParseTuple(args, "sw#OO",
+ &filename, &fmap, &flen, &idx, &py_total))
return NULL;
+ if (!bup_uint_from_py(&total, py_total, "total"))
+ return NULL;
+
if (PyList_Size (idx) != FAN_ENTRIES) // Check for list of the right length.
return PyErr_Format (PyExc_TypeError, "idx must contain %d entries",
FAN_ENTRIES);
{
unsigned char *sha = NULL;
Py_ssize_t sha_len = 0;
- unsigned int crc = 0;
- unsigned PY_LONG_LONG ofs_py = 0;
+ PyObject *crc_py, *ofs_py;
+ unsigned int crc;
+ unsigned PY_LONG_LONG ofs_ull;
uint64_t ofs;
- if (!PyArg_ParseTuple(PyList_GET_ITEM(part, j), "t#IK",
- &sha, &sha_len, &crc, &ofs_py))
+ if (!PyArg_ParseTuple(PyList_GET_ITEM(part, j), "t#OO",
+ &sha, &sha_len, &crc_py, &ofs_py))
return NULL;
+ if(!bup_uint_from_py(&crc, crc_py, "crc"))
+ return NULL;
+ if(!bup_ullong_from_py(&ofs_ull, ofs_py, "ofs"))
+ return NULL;
assert(crc <= UINT32_MAX);
- assert(ofs_py <= UINT64_MAX);
- ofs = ofs_py;
+ assert(ofs_ull <= UINT64_MAX);
+ ofs = ofs_ull;
if (sha_len != sizeof(struct sha))
return NULL;
memcpy(sha_ptr++, sha, sizeof(struct sha));
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("");
}
+// Currently the Linux kernel and FUSE disagree over the type for
+// FS_IOC_GETFLAGS and FS_IOC_SETFLAGS. The kernel actually uses int,
+// but FUSE chose long (matching the declaration in linux/fs.h). So
+// if you use int, and then traverse a FUSE filesystem, you may
+// corrupt the stack. But if you use long, then you may get invalid
+// results on big-endian systems.
+//
+// For now, we just use long, and then disable Linux attrs entirely
+// (with a warning) in helpers.py on systems that are affected.
+
#ifdef BUP_HAVE_FILE_ATTRS
static PyObject *bup_get_linux_file_attr(PyObject *self, PyObject *args)
{
int rc;
- unsigned int attr;
+ unsigned long attr;
char *path;
int fd;
if (fd == -1)
return PyErr_SetFromErrnoWithFilename(PyExc_OSError, path);
- attr = 0;
+ attr = 0; // Handle int/long mismatch (see above)
rc = ioctl(fd, FS_IOC_GETFLAGS, &attr);
if (rc == -1)
{
close(fd);
return PyErr_SetFromErrnoWithFilename(PyExc_OSError, path);
}
-
close(fd);
- return Py_BuildValue("I", attr);
+ assert(attr <= UINT_MAX); // Kernel type is actually int
+ return PyLong_FromUnsignedLong(attr);
}
#endif /* def BUP_HAVE_FILE_ATTRS */
+
#ifdef BUP_HAVE_FILE_ATTRS
static PyObject *bup_set_linux_file_attr(PyObject *self, PyObject *args)
{
int rc;
- unsigned int orig_attr, attr;
+ unsigned long orig_attr;
+ unsigned int attr;
char *path;
+ PyObject *py_attr;
int fd;
- if (!PyArg_ParseTuple(args, "sI", &path, &attr))
+ if (!PyArg_ParseTuple(args, "sO", &path, &py_attr))
+ return NULL;
+
+ if (!bup_uint_from_py(&attr, py_attr, "attr"))
return NULL;
fd = open(path, O_RDONLY | O_NONBLOCK | O_LARGEFILE | O_NOFOLLOW);
| FS_TOPDIR_FL | FS_NOCOW_FL;
// The extents flag can't be removed, so don't (see chattr(1) and chattr.c).
+ orig_attr = 0; // Handle int/long mismatch (see above)
rc = ioctl(fd, FS_IOC_GETFLAGS, &orig_attr);
+ assert(orig_attr <= UINT_MAX); // Kernel type is actually int
if (rc == -1)
{
close(fd);
return PyErr_SetFromErrnoWithFilename(PyExc_OSError, path);
}
- attr |= (orig_attr & FS_EXTENT_FL);
+ attr |= ((unsigned int) orig_attr) & FS_EXTENT_FL;
rc = ioctl(fd, FS_IOC_SETFLAGS, &attr);
if (rc == -1)
#endif
#endif
-
-#if defined(HAVE_UTIMENSAT) || defined(HAVE_FUTIMES) || defined(HAVE_LUTIMES)
-
-static int bup_parse_xutime_args(char **path,
- long *access,
- long *access_ns,
- long *modification,
- long *modification_ns,
- PyObject *self, PyObject *args)
-{
- if (!PyArg_ParseTuple(args, "s((ll)(ll))",
- path,
- access, access_ns,
- modification, modification_ns))
- return 0;
-
- if (isnan(*access))
- {
- PyErr_SetString(PyExc_ValueError, "access time is NaN");
- return 0;
- }
- else if (isinf(*access))
- {
- PyErr_SetString(PyExc_ValueError, "access time is infinite");
- return 0;
- }
- else if (isnan(*modification))
- {
- PyErr_SetString(PyExc_ValueError, "modification time is NaN");
- return 0;
- }
- else if (isinf(*modification))
- {
- PyErr_SetString(PyExc_ValueError, "modification time is infinite");
- return 0;
- }
-
- if (isnan(*access_ns))
- {
- PyErr_SetString(PyExc_ValueError, "access time ns is NaN");
- return 0;
- }
- else if (isinf(*access_ns))
- {
- PyErr_SetString(PyExc_ValueError, "access time ns is infinite");
- return 0;
- }
- else if (isnan(*modification_ns))
- {
- PyErr_SetString(PyExc_ValueError, "modification time ns is NaN");
- return 0;
- }
- else if (isinf(*modification_ns))
- {
- PyErr_SetString(PyExc_ValueError, "modification time ns is infinite");
- return 0;
- }
-
- return 1;
-}
-
-#endif /* defined(HAVE_UTIMENSAT) || defined(HAVE_FUTIMES)
- || defined(HAVE_LUTIMES) */
-
-
-#define INTEGRAL_ASSIGNMENT_FITS(dest, src) \
- ({ \
- *(dest) = (src); \
- *(dest) == (src) && (*(dest) < 1) == ((src) < 1); \
- })
-
-
#define ASSIGN_PYLONG_TO_INTEGRAL(dest, pylong, overflow) \
({ \
int result = 0; \
*(overflow) = 0; \
- const long long ltmp = PyLong_AsLongLong(pylong); \
- if (ltmp == -1 && PyErr_Occurred()) \
+ const long long lltmp = PyLong_AsLongLong(pylong); \
+ if (lltmp == -1 && PyErr_Occurred()) \
{ \
if (PyErr_ExceptionMatches(PyExc_OverflowError)) \
{ \
- const unsigned long ultmp = PyLong_AsUnsignedLongLong(pylong); \
- if (ultmp == (unsigned long long) -1 && PyErr_Occurred()) \
+ const unsigned long long ulltmp = PyLong_AsUnsignedLongLong(pylong); \
+ if (ulltmp == (unsigned long long) -1 && PyErr_Occurred()) \
{ \
if (PyErr_ExceptionMatches(PyExc_OverflowError)) \
{ \
*(overflow) = 1; \
} \
} \
- if (INTEGRAL_ASSIGNMENT_FITS((dest), ultmp)) \
+ if (INTEGRAL_ASSIGNMENT_FITS((dest), ulltmp)) \
result = 1; \
else \
*(overflow) = 1; \
} \
else \
{ \
- if (INTEGRAL_ASSIGNMENT_FITS((dest), ltmp)) \
+ if (INTEGRAL_ASSIGNMENT_FITS((dest), lltmp)) \
result = 1; \
else \
*(overflow) = 1; \
#endif /* def HAVE_UTIMENSAT */
+#if defined(HAVE_UTIMES) || defined(HAVE_LUTIMES)
+
+static int bup_parse_xutimes_args(char **path,
+ struct timeval tv[2],
+ PyObject *args)
+{
+ PyObject *access_py, *modification_py;
+ long long access_us, modification_us; // POSIX guarantees tv_usec is signed.
+
+ if (!PyArg_ParseTuple(args, "s((OL)(OL))",
+ path,
+ &access_py, &access_us,
+ &modification_py, &modification_us))
+ return 0;
+
+ int overflow;
+ if (!ASSIGN_PYLONG_TO_INTEGRAL(&(tv[0].tv_sec), access_py, &overflow))
+ {
+ if (overflow)
+ PyErr_SetString(PyExc_ValueError, "unable to convert access time seconds to timeval");
+ return 0;
+ }
+ if (!INTEGRAL_ASSIGNMENT_FITS(&(tv[0].tv_usec), access_us))
+ {
+ PyErr_SetString(PyExc_ValueError, "unable to convert access time nanoseconds to timeval");
+ return 0;
+ }
+ if (!ASSIGN_PYLONG_TO_INTEGRAL(&(tv[1].tv_sec), modification_py, &overflow))
+ {
+ if (overflow)
+ PyErr_SetString(PyExc_ValueError, "unable to convert modification time seconds to timeval");
+ return 0;
+ }
+ if (!INTEGRAL_ASSIGNMENT_FITS(&(tv[1].tv_usec), modification_us))
+ {
+ PyErr_SetString(PyExc_ValueError, "unable to convert modification time nanoseconds to timeval");
+ return 0;
+ }
+ return 1;
+}
+
+#endif /* defined(HAVE_UTIMES) || defined(HAVE_LUTIMES) */
+
+
#ifdef HAVE_UTIMES
-#define BUP_HAVE_BUP_UTIME_NS 1
-static PyObject *bup_utime_ns(PyObject *self, PyObject *args)
+static PyObject *bup_utimes(PyObject *self, PyObject *args)
{
- int rc;
char *path;
- long access, access_ns, modification, modification_ns;
struct timeval tv[2];
-
- if (!bup_parse_xutime_args(&path, &access, &access_ns,
- &modification, &modification_ns,
- self, args))
- return NULL;
-
- tv[0].tv_sec = access;
- tv[0].tv_usec = access_ns / 1000;
- tv[1].tv_sec = modification;
- tv[1].tv_usec = modification_ns / 1000;
- rc = utimes(path, tv);
+ if (!bup_parse_xutimes_args(&path, tv, args))
+ return NULL;
+ int rc = utimes(path, tv);
if (rc != 0)
return PyErr_SetFromErrnoWithFilename(PyExc_OSError, path);
-
return Py_BuildValue("O", Py_None);
}
#endif /* def HAVE_UTIMES */
#ifdef HAVE_LUTIMES
-#define BUP_HAVE_BUP_LUTIME_NS 1
-static PyObject *bup_lutime_ns(PyObject *self, PyObject *args)
+static PyObject *bup_lutimes(PyObject *self, PyObject *args)
{
- int rc;
char *path;
- long access, access_ns, modification, modification_ns;
struct timeval tv[2];
-
- if (!bup_parse_xutime_args(&path, &access, &access_ns,
- &modification, &modification_ns,
- self, args))
- return NULL;
-
- tv[0].tv_sec = access;
- tv[0].tv_usec = access_ns / 1000;
- tv[1].tv_sec = modification;
- tv[1].tv_usec = modification_ns / 1000;
- rc = lutimes(path, tv);
+ if (!bup_parse_xutimes_args(&path, tv, args))
+ return NULL;
+ int rc = lutimes(path, tv);
if (rc != 0)
return PyErr_SetFromErrnoWithFilename(PyExc_OSError, path);
#endif
-static void set_invalid_timespec_msg(const char *field,
- const long long sec,
- const long nsec,
- const char *filename,
- int fd)
-{
- if (filename != NULL)
- PyErr_Format(PyExc_ValueError,
- "invalid %s timespec (%lld %ld) for file \"%s\"",
- field, sec, nsec, filename);
- else
- PyErr_Format(PyExc_ValueError,
- "invalid %s timespec (%lld %ld) for file descriptor %d",
- field, sec, nsec, fd);
-}
-
-
-static int normalize_timespec_values(const char *name,
- long long *sec,
- long *nsec,
- const char *filename,
- int fd)
-{
- if (*nsec < -999999999 || *nsec > 999999999)
- {
- set_invalid_timespec_msg(name, *sec, *nsec, filename, fd);
- return 0;
- }
- if (*nsec < 0)
- {
- if (*sec == LONG_MIN)
- {
- set_invalid_timespec_msg(name, *sec, *nsec, filename, fd);
- return 0;
- }
- *nsec += 1000000000;
- *sec -= 1;
- }
- return 1;
-}
-
-
-#define INTEGER_TO_PY(x) \
- (((x) >= 0) ? PyLong_FromUnsignedLongLong(x) : PyLong_FromLongLong(x))
-
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wtautological-compare" // For INTEGER_TO_PY().
static PyObject *stat_struct_to_py(const struct stat *st,
const char *filename,
int fd)
{
- long long atime = st->st_atime;
- long long mtime = st->st_mtime;
- long long ctime = st->st_ctime;
- long atime_ns = BUP_STAT_ATIME_NS(st);
- long mtime_ns = BUP_STAT_MTIME_NS(st);
- long ctime_ns = BUP_STAT_CTIME_NS(st);
-
- if (!normalize_timespec_values("atime", &atime, &atime_ns, filename, fd))
- return NULL;
- if (!normalize_timespec_values("mtime", &mtime, &mtime_ns, filename, fd))
- return NULL;
- if (!normalize_timespec_values("ctime", &ctime, &ctime_ns, filename, fd))
- return NULL;
-
// We can check the known (via POSIX) signed and unsigned types at
// compile time, but not (easily) the unspecified types, so handle
- // those via INTEGER_TO_PY().
- return Py_BuildValue("OKOOOOOL(Ll)(Ll)(Ll)",
+ // those via INTEGER_TO_PY(). Assumes ns values will fit in a
+ // long.
+ return Py_BuildValue("OKOOOOOL(Ol)(Ol)(Ol)",
INTEGER_TO_PY(st->st_mode),
(unsigned PY_LONG_LONG) st->st_ino,
INTEGER_TO_PY(st->st_dev),
INTEGER_TO_PY(st->st_gid),
INTEGER_TO_PY(st->st_rdev),
(PY_LONG_LONG) st->st_size,
- (PY_LONG_LONG) atime,
- (long) atime_ns,
- (PY_LONG_LONG) mtime,
- (long) mtime_ns,
- (PY_LONG_LONG) ctime,
- (long) ctime_ns);
+ INTEGER_TO_PY(st->st_atime),
+ (long) BUP_STAT_ATIME_NS(st),
+ INTEGER_TO_PY(st->st_mtime),
+ (long) BUP_STAT_MTIME_NS(st),
+ INTEGER_TO_PY(st->st_ctime),
+ (long) BUP_STAT_CTIME_NS(st));
}
+#pragma clang diagnostic pop // ignored "-Wtautological-compare"
static PyObject *bup_stat(PyObject *self, PyObject *args)
{
}
+#ifdef HAVE_TM_TM_GMTOFF
+static PyObject *bup_localtime(PyObject *self, PyObject *args)
+{
+ long long lltime;
+ time_t ttime;
+ if (!PyArg_ParseTuple(args, "L", &lltime))
+ return NULL;
+ if (!INTEGRAL_ASSIGNMENT_FITS(&ttime, lltime))
+ return PyErr_Format(PyExc_OverflowError, "time value too large");
+
+ struct tm tm;
+ if(localtime_r(&ttime, &tm) == NULL)
+ return PyErr_SetFromErrno(PyExc_OSError);
+
+ // Match the Python struct_time values.
+ return Py_BuildValue("[i,i,i,i,i,i,i,i,i,i,s]",
+ 1900 + tm.tm_year, tm.tm_mon + 1, tm.tm_mday,
+ tm.tm_hour, tm.tm_min, tm.tm_sec,
+ tm.tm_wday, tm.tm_yday + 1,
+ tm.tm_isdst, tm.tm_gmtoff, tm.tm_zone);
+}
+#endif /* def HAVE_TM_TM_GMTOFF */
+
+
static PyMethodDef helper_methods[] = {
+ { "write_sparsely", bup_write_sparsely, METH_VARARGS,
+ "Write buf excepting zeros at the end. Return trailing zero count." },
{ "selftest", selftest, METH_VARARGS,
"Check that the rolling checksum rolls correctly (for unit tests)." },
{ "blobbits", blobbits, METH_VARARGS,
{ "bup_utimensat", bup_utimensat, METH_VARARGS,
"Change path timestamps with nanosecond precision (POSIX)." },
#endif
-#ifdef BUP_HAVE_BUP_UTIME_NS
- { "bup_utime_ns", bup_utime_ns, METH_VARARGS,
- "Change path timestamps with up to nanosecond precision." },
+#ifdef HAVE_UTIMES
+ { "bup_utimes", bup_utimes, METH_VARARGS,
+ "Change path timestamps with microsecond precision." },
#endif
-#ifdef BUP_HAVE_BUP_LUTIME_NS
- { "bup_lutime_ns", bup_lutime_ns, METH_VARARGS,
- "Change path timestamps with up to nanosecond precision;"
+#ifdef HAVE_LUTIMES
+ { "bup_lutimes", bup_lutimes, METH_VARARGS,
+ "Change path timestamps with microsecond precision;"
" don't follow symlinks." },
#endif
{ "stat", bup_stat, METH_VARARGS,
"Extended version of lstat." },
{ "fstat", bup_fstat, METH_VARARGS,
"Extended version of fstat." },
+#ifdef HAVE_TM_TM_GMTOFF
+ { "localtime", bup_localtime, METH_VARARGS,
+ "Return struct_time elements plus the timezone offset and name." },
+#endif
{ NULL, NULL, 0, NULL }, // sentinel
};
assert(sizeof(blkcnt_t) <= sizeof(PY_LONG_LONG));
// Just be sure (relevant when passing timestamps back to Python above).
assert(sizeof(PY_LONG_LONG) <= sizeof(long long));
+ assert(sizeof(unsigned PY_LONG_LONG) <= sizeof(unsigned long long));
+
+ if (sizeof(off_t) < sizeof(int))
+ {
+ // Originally required by append_sparse_region().
+ fprintf(stderr, "sizeof(off_t) < sizeof(int); please report.\n");
+ exit(1);
+ }
char *e;
PyObject *m = Py_InitModule("_helpers", helper_methods);
if (m == NULL)
return;
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wtautological-compare" // For INTEGER_TO_PY().
#ifdef HAVE_UTIMENSAT
{
PyObject *value;
Py_DECREF(value);
}
#endif
+ {
+ 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);
+ Py_DECREF(value);
+ }
+#pragma clang diagnostic pop // ignored "-Wtautological-compare"
e = getenv("BUP_FORCE_TTY");
istty2 = isatty(2) || (atoi(e ? e : "0") & 2);
projects / bup.git / blobdiff