#define _LARGEFILE64_SOURCE 1
+#define PY_SSIZE_T_CLEAN 1
+#undef NDEBUG
+#include "../../config/config.h"
-#include "bupsplit.h"
+// According to Python, its header has to go first:
+// http://docs.python.org/2/c-api/intro.html#include-files
#include <Python.h>
+
#include <assert.h>
#include <errno.h>
#include <fcntl.h>
#include <arpa/inet.h>
#include <stdint.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <sys/mman.h>
+
+#ifdef HAVE_SYS_TYPES_H
+#include <sys/types.h>
+#endif
+#ifdef HAVE_SYS_STAT_H
+#include <sys/stat.h>
+#endif
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
-#ifdef linux
+#ifdef HAVE_LINUX_FS_H
#include <linux/fs.h>
+#endif
+#ifdef HAVE_SYS_IOCTL_H
#include <sys/ioctl.h>
-#include <sys/stat.h>
-#include <sys/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
+#endif
+
+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__
+
+// There's no 'ps' on win32 anyway, and Py_GetArgcArgv() isn't available.
+static void unpythonize_argv(void) { }
+
+#else // not __WIN32__
+
+// For some reason this isn't declared in Python.h
+extern void Py_GetArgcArgv(int *argc, char ***argv);
+
+static void unpythonize_argv(void)
+{
+ int argc, i;
+ char **argv, *arge;
+
+ Py_GetArgcArgv(&argc, &argv);
+
+ for (i = 0; i < argc-1; i++)
+ {
+ if (argv[i] + strlen(argv[i]) + 1 != argv[i+1])
+ {
+ // The argv block doesn't work the way we expected; it's unsafe
+ // to mess with it.
+ return;
+ }
+ }
+
+ arge = argv[argc-1] + strlen(argv[argc-1]) + 1;
+
+ if (strstr(argv[0], "python") && argv[1] == argv[0] + strlen(argv[0]) + 1)
+ {
+ char *p;
+ size_t len, diff;
+ p = strrchr(argv[1], '/');
+ if (p)
+ {
+ p++;
+ diff = p - argv[0];
+ len = arge - p;
+ memmove(argv[0], p, len);
+ memset(arge - diff, 0, diff);
+ for (i = 0; i < argc; i++)
+ argv[i] = argv[i+1] ? argv[i+1]-diff : NULL;
+ }
+ }
+}
+
+#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)
{
static PyObject *splitbuf(PyObject *self, PyObject *args)
{
unsigned char *buf = NULL;
- int len = 0, out = 0, bits = -1;
+ Py_ssize_t len = 0;
+ int out = 0, bits = -1;
if (!PyArg_ParseTuple(args, "t#", &buf, &len))
return NULL;
+ assert(len <= INT_MAX);
out = bupsplit_find_ofs(buf, len, &bits);
+ if (out) assert(bits >= BUP_BLOBBITS);
return Py_BuildValue("ii", out, bits);
}
static PyObject *bitmatch(PyObject *self, PyObject *args)
{
unsigned char *buf1 = NULL, *buf2 = NULL;
- int len1 = 0, len2 = 0;
- int byte, bit;
+ Py_ssize_t len1 = 0, len2 = 0;
+ Py_ssize_t byte;
+ int bit;
if (!PyArg_ParseTuple(args, "t#t#", &buf1, &len1, &buf2, &len2))
return NULL;
}
}
+ assert(byte <= (INT_MAX >> 3));
return Py_BuildValue("i", byte*8 + bit);
}
static PyObject *firstword(PyObject *self, PyObject *args)
{
unsigned char *buf = NULL;
- int len = 0;
+ Py_ssize_t len = 0;
uint32_t v;
if (!PyArg_ParseTuple(args, "t#", &buf, &len))
return NULL;
v = ntohl(*(uint32_t *)buf);
- return Py_BuildValue("I", v);
+ return PyLong_FromUnsignedLong(v);
+}
+
+
+#define BLOOM2_HEADERLEN 16
+
+static void to_bloom_address_bitmask4(const unsigned char *buf,
+ const int nbits, uint64_t *v, unsigned char *bitmask)
+{
+ int bit;
+ uint32_t high;
+ uint64_t raw, mask;
+
+ memcpy(&high, buf, 4);
+ mask = (1<<nbits) - 1;
+ raw = (((uint64_t)ntohl(high) << 8) | buf[4]);
+ bit = (raw >> (37-nbits)) & 0x7;
+ *v = (raw >> (40-nbits)) & mask;
+ *bitmask = 1 << bit;
+}
+
+static void to_bloom_address_bitmask5(const unsigned char *buf,
+ const int nbits, uint32_t *v, unsigned char *bitmask)
+{
+ int bit;
+ uint32_t high;
+ uint32_t raw, mask;
+
+ memcpy(&high, buf, 4);
+ mask = (1<<nbits) - 1;
+ raw = ntohl(high);
+ bit = (raw >> (29-nbits)) & 0x7;
+ *v = (raw >> (32-nbits)) & mask;
+ *bitmask = 1 << bit;
+}
+
+#define BLOOM_SET_BIT(name, address, otype) \
+static void name(unsigned char *bloom, const unsigned char *buf, const int nbits)\
+{\
+ unsigned char bitmask;\
+ otype v;\
+ address(buf, nbits, &v, &bitmask);\
+ bloom[BLOOM2_HEADERLEN+v] |= bitmask;\
+}
+BLOOM_SET_BIT(bloom_set_bit4, to_bloom_address_bitmask4, uint64_t)
+BLOOM_SET_BIT(bloom_set_bit5, to_bloom_address_bitmask5, uint32_t)
+
+
+#define BLOOM_GET_BIT(name, address, otype) \
+static int name(const unsigned char *bloom, const unsigned char *buf, const int nbits)\
+{\
+ unsigned char bitmask;\
+ otype v;\
+ address(buf, nbits, &v, &bitmask);\
+ return bloom[BLOOM2_HEADERLEN+v] & bitmask;\
+}
+BLOOM_GET_BIT(bloom_get_bit4, to_bloom_address_bitmask4, uint64_t)
+BLOOM_GET_BIT(bloom_get_bit5, to_bloom_address_bitmask5, uint32_t)
+
+
+static PyObject *bloom_add(PyObject *self, PyObject *args)
+{
+ unsigned char *sha = NULL, *bloom = NULL;
+ unsigned char *end;
+ Py_ssize_t len = 0, blen = 0;
+ int nbits = 0, k = 0;
+
+ if (!PyArg_ParseTuple(args, "w#s#ii", &bloom, &blen, &sha, &len, &nbits, &k))
+ return NULL;
+
+ if (blen < 16+(1<<nbits) || len % 20 != 0)
+ return NULL;
+
+ if (k == 5)
+ {
+ if (nbits > 29)
+ return NULL;
+ for (end = sha + len; sha < end; sha += 20/k)
+ bloom_set_bit5(bloom, sha, nbits);
+ }
+ else if (k == 4)
+ {
+ if (nbits > 37)
+ return NULL;
+ for (end = sha + len; sha < end; sha += 20/k)
+ bloom_set_bit4(bloom, sha, nbits);
+ }
+ else
+ return NULL;
+
+
+ return Py_BuildValue("n", len/20);
+}
+
+static PyObject *bloom_contains(PyObject *self, PyObject *args)
+{
+ unsigned char *sha = NULL, *bloom = NULL;
+ Py_ssize_t len = 0, blen = 0;
+ int nbits = 0, k = 0;
+ unsigned char *end;
+ int steps;
+
+ if (!PyArg_ParseTuple(args, "t#s#ii", &bloom, &blen, &sha, &len, &nbits, &k))
+ return NULL;
+
+ if (len != 20)
+ return NULL;
+
+ if (k == 5)
+ {
+ if (nbits > 29)
+ return NULL;
+ for (steps = 1, end = sha + 20; sha < end; sha += 20/k, steps++)
+ if (!bloom_get_bit5(bloom, sha, nbits))
+ return Py_BuildValue("Oi", Py_None, steps);
+ }
+ else if (k == 4)
+ {
+ if (nbits > 37)
+ return NULL;
+ for (steps = 1, end = sha + 20; sha < end; sha += 20/k, steps++)
+ if (!bloom_get_bit4(bloom, sha, nbits))
+ return Py_BuildValue("Oi", Py_None, steps);
+ }
+ else
+ return NULL;
+
+ return Py_BuildValue("ii", 1, k);
+}
+
+
+static uint32_t _extract_bits(unsigned char *buf, int nbits)
+{
+ uint32_t v, mask;
+
+ mask = (1<<nbits) - 1;
+ v = ntohl(*(uint32_t *)buf);
+ v = (v >> (32-nbits)) & mask;
+ return v;
}
static PyObject *extract_bits(PyObject *self, PyObject *args)
{
unsigned char *buf = NULL;
- int len = 0, nbits = 0;
- uint32_t v, mask;
+ Py_ssize_t len = 0;
+ int nbits = 0;
if (!PyArg_ParseTuple(args, "t#i", &buf, &len, &nbits))
return NULL;
if (len < 4)
return NULL;
- mask = (1<<nbits) - 1;
- v = ntohl(*(uint32_t *)buf);
- v = (v >> (32-nbits)) & mask;
- return Py_BuildValue("I", v);
+ return PyLong_FromUnsignedLong(_extract_bits(buf, nbits));
+}
+
+
+struct sha {
+ unsigned char bytes[20];
+};
+
+
+struct idx {
+ unsigned char *map;
+ struct sha *cur;
+ struct sha *end;
+ uint32_t *cur_name;
+ Py_ssize_t bytes;
+ int name_base;
+};
+
+
+static int _cmp_sha(const struct sha *sha1, const struct sha *sha2)
+{
+ int i;
+ for (i = 0; i < sizeof(struct sha); i++)
+ if (sha1->bytes[i] != sha2->bytes[i])
+ return sha1->bytes[i] - sha2->bytes[i];
+ return 0;
+}
+
+
+static void _fix_idx_order(struct idx **idxs, int *last_i)
+{
+ struct idx *idx;
+ int low, mid, high, c = 0;
+
+ idx = idxs[*last_i];
+ if (idxs[*last_i]->cur >= idxs[*last_i]->end)
+ {
+ idxs[*last_i] = NULL;
+ PyMem_Free(idx);
+ --*last_i;
+ return;
+ }
+ if (*last_i == 0)
+ return;
+
+ low = *last_i-1;
+ mid = *last_i;
+ high = 0;
+ while (low >= high)
+ {
+ mid = (low + high) / 2;
+ c = _cmp_sha(idx->cur, idxs[mid]->cur);
+ if (c < 0)
+ high = mid + 1;
+ else if (c > 0)
+ low = mid - 1;
+ else
+ break;
+ }
+ if (c < 0)
+ ++mid;
+ if (mid == *last_i)
+ return;
+ memmove(&idxs[mid+1], &idxs[mid], (*last_i-mid)*sizeof(struct idx *));
+ idxs[mid] = idx;
+}
+
+
+static uint32_t _get_idx_i(struct idx *idx)
+{
+ if (idx->cur_name == NULL)
+ return idx->name_base;
+ return ntohl(*idx->cur_name) + idx->name_base;
+}
+
+#define MIDX4_HEADERLEN 12
+
+static PyObject *merge_into(PyObject *self, PyObject *args)
+{
+ PyObject *py_total, *ilist = NULL;
+ unsigned char *fmap = NULL;
+ struct sha *sha_ptr, *sha_start = NULL;
+ uint32_t *table_ptr, *name_ptr, *name_start;
+ struct idx **idxs = NULL;
+ Py_ssize_t flen = 0;
+ int bits = 0, i;
+ unsigned int total;
+ uint32_t count, prefix;
+ int num_i;
+ int last_i;
+
+ 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 *));
+
+ for (i = 0; i < num_i; i++)
+ {
+ long len, sha_ofs, name_map_ofs;
+ idxs[i] = (struct idx *)PyMem_Malloc(sizeof(struct idx));
+ PyObject *itup = PyList_GetItem(ilist, i);
+ if (!PyArg_ParseTuple(itup, "t#llli", &idxs[i]->map, &idxs[i]->bytes,
+ &len, &sha_ofs, &name_map_ofs, &idxs[i]->name_base))
+ return NULL;
+ idxs[i]->cur = (struct sha *)&idxs[i]->map[sha_ofs];
+ idxs[i]->end = &idxs[i]->cur[len];
+ if (name_map_ofs)
+ idxs[i]->cur_name = (uint32_t *)&idxs[i]->map[name_map_ofs];
+ else
+ idxs[i]->cur_name = NULL;
+ }
+ table_ptr = (uint32_t *)&fmap[MIDX4_HEADERLEN];
+ sha_start = sha_ptr = (struct sha *)&table_ptr[1<<bits];
+ name_start = name_ptr = (uint32_t *)&sha_ptr[total];
+
+ last_i = num_i-1;
+ count = 0;
+ prefix = 0;
+ while (last_i >= 0)
+ {
+ struct idx *idx;
+ uint32_t new_prefix;
+ if (count % 102424 == 0 && istty2)
+ fprintf(stderr, "midx: writing %.2f%% (%d/%d)\r",
+ count*100.0/total, count, total);
+ idx = idxs[last_i];
+ new_prefix = _extract_bits((unsigned char *)idx->cur, bits);
+ while (prefix < new_prefix)
+ table_ptr[prefix++] = htonl(count);
+ memcpy(sha_ptr++, idx->cur, sizeof(struct sha));
+ *name_ptr++ = htonl(_get_idx_i(idx));
+ ++idx->cur;
+ if (idx->cur_name != NULL)
+ ++idx->cur_name;
+ _fix_idx_order(idxs, &last_i);
+ ++count;
+ }
+ while (prefix < (1<<bits))
+ table_ptr[prefix++] = htonl(count);
+ assert(count == total);
+ assert(prefix == (1<<bits));
+ assert(sha_ptr == sha_start+count);
+ assert(name_ptr == name_start+count);
+
+ PyMem_Free(idxs);
+ return PyLong_FromUnsignedLong(count);
+}
+
+#define FAN_ENTRIES 256
+
+static PyObject *write_idx(PyObject *self, PyObject *args)
+{
+ char *filename = NULL;
+ PyObject *py_total, *idx = NULL;
+ PyObject *part;
+ unsigned char *fmap = NULL;
+ Py_ssize_t flen = 0;
+ unsigned int total = 0;
+ uint32_t count;
+ int i, j, ofs64_count;
+ uint32_t *fan_ptr, *crc_ptr, *ofs_ptr;
+ uint64_t *ofs64_ptr;
+ struct sha *sha_ptr;
+
+ 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);
+
+ const char idx_header[] = "\377tOc\0\0\0\002";
+ memcpy (fmap, idx_header, sizeof(idx_header) - 1);
+
+ fan_ptr = (uint32_t *)&fmap[sizeof(idx_header) - 1];
+ sha_ptr = (struct sha *)&fan_ptr[FAN_ENTRIES];
+ crc_ptr = (uint32_t *)&sha_ptr[total];
+ ofs_ptr = (uint32_t *)&crc_ptr[total];
+ ofs64_ptr = (uint64_t *)&ofs_ptr[total];
+
+ count = 0;
+ ofs64_count = 0;
+ for (i = 0; i < FAN_ENTRIES; ++i)
+ {
+ int plen;
+ part = PyList_GET_ITEM(idx, i);
+ PyList_Sort(part);
+ plen = PyList_GET_SIZE(part);
+ count += plen;
+ *fan_ptr++ = htonl(count);
+ for (j = 0; j < plen; ++j)
+ {
+ unsigned char *sha = NULL;
+ Py_ssize_t sha_len = 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#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_ull <= UINT64_MAX);
+ ofs = ofs_ull;
+ if (sha_len != sizeof(struct sha))
+ return NULL;
+ memcpy(sha_ptr++, sha, sizeof(struct sha));
+ *crc_ptr++ = htonl(crc);
+ if (ofs > 0x7fffffff)
+ {
+ *ofs64_ptr++ = htonll(ofs);
+ ofs = 0x80000000 | ofs64_count++;
+ }
+ *ofs_ptr++ = htonl((uint32_t)ofs);
+ }
+ }
+
+ int rc = msync(fmap, flen, MS_ASYNC);
+ if (rc != 0)
+ return PyErr_SetFromErrnoWithFilename(PyExc_IOError, filename);
+
+ return PyLong_FromUnsignedLong(count);
}
static PyObject *write_random(PyObject *self, PyObject *args)
{
uint32_t buf[1024/4];
- int fd = -1, seed = 0;
+ int fd = -1, seed = 0, verbose = 0;
ssize_t ret;
long long len = 0, kbytes = 0, written = 0;
- if (!PyArg_ParseTuple(args, "iLi", &fd, &len, &seed))
+ if (!PyArg_ParseTuple(args, "iLii", &fd, &len, &seed, &verbose))
return NULL;
srandom(seed);
written += ret;
if (ret < (int)sizeof(buf))
break;
- if (kbytes/1024 > 0 && !(kbytes%1024))
+ if (verbose && kbytes/1024 > 0 && !(kbytes%1024))
fprintf(stderr, "Random: %lld Mbytes\r", kbytes/1024);
}
}
-static PyObject *open_noatime(PyObject *self, PyObject *args)
+static PyObject *random_sha(PyObject *self, PyObject *args)
{
- char *filename = NULL;
- int attrs, attrs_noatime, fd;
- if (!PyArg_ParseTuple(args, "s", &filename))
+ static int seeded = 0;
+ uint32_t shabuf[20/4];
+ int i;
+
+ if (!seeded)
+ {
+ assert(sizeof(shabuf) == 20);
+ srandom(time(NULL));
+ seeded = 1;
+ }
+
+ if (!PyArg_ParseTuple(args, ""))
return NULL;
- attrs = O_RDONLY;
+
+ memset(shabuf, 0, sizeof(shabuf));
+ for (i=0; i < 20/4; i++)
+ shabuf[i] = random();
+ return Py_BuildValue("s#", shabuf, 20);
+}
+
+
+static int _open_noatime(const char *filename, int attrs)
+{
+ int attrs_noatime, fd;
+ attrs |= O_RDONLY;
#ifdef O_NOFOLLOW
attrs |= O_NOFOLLOW;
#endif
// just harmlessly ignore it, so this branch won't trigger)
fd = open(filename, attrs);
}
+ return fd;
+}
+
+
+static PyObject *open_noatime(PyObject *self, PyObject *args)
+{
+ char *filename = NULL;
+ int fd;
+ if (!PyArg_ParseTuple(args, "s", &filename))
+ return NULL;
+ fd = _open_noatime(filename, 0);
if (fd < 0)
- return PyErr_SetFromErrnoWithFilename(PyExc_IOError, filename);
+ return PyErr_SetFromErrnoWithFilename(PyExc_OSError, filename);
return Py_BuildValue("i", fd);
}
}
-#ifdef linux
+// 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;
if (!PyArg_ParseTuple(args, "s", &path))
return NULL;
- fd = open(path, O_RDONLY | O_NONBLOCK | O_LARGEFILE | O_NOFOLLOW);
+ fd = _open_noatime(path, O_NONBLOCK);
if (fd == -1)
- return PyErr_SetFromErrnoWithFilename(PyExc_IOError, path);
+ 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_IOError, path);
+ return PyErr_SetFromErrnoWithFilename(PyExc_OSError, path);
}
-
close(fd);
- return Py_BuildValue("k", 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 long attr;
+ unsigned long orig_attr;
+ unsigned int attr;
char *path;
+ PyObject *py_attr;
int fd;
- if (!PyArg_ParseTuple(args, "sk", &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);
- if(fd == -1)
- return PyErr_SetFromErrnoWithFilename(PyExc_IOError, path);
+ if (fd == -1)
+ return PyErr_SetFromErrnoWithFilename(PyExc_OSError, path);
+
+ // Restrict attr to modifiable flags acdeijstuADST -- see
+ // chattr(1) and the e2fsprogs source. Letter to flag mapping is
+ // in pf.c flags_array[].
+ attr &= FS_APPEND_FL | FS_COMPR_FL | FS_NODUMP_FL | FS_EXTENT_FL
+ | FS_IMMUTABLE_FL | FS_JOURNAL_DATA_FL | FS_SECRM_FL | FS_NOTAIL_FL
+ | FS_UNRM_FL | FS_NOATIME_FL | FS_DIRSYNC_FL | FS_SYNC_FL
+ | 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 |= ((unsigned int) orig_attr) & FS_EXTENT_FL;
rc = ioctl(fd, FS_IOC_SETFLAGS, &attr);
if (rc == -1)
{
close(fd);
- return PyErr_SetFromErrnoWithFilename(PyExc_IOError, path);
+ return PyErr_SetFromErrnoWithFilename(PyExc_OSError, path);
}
close(fd);
- Py_RETURN_TRUE;
+ return Py_BuildValue("O", Py_None);
}
-#endif /* def linux */
+#endif /* def BUP_HAVE_FILE_ATTRS */
-#if _XOPEN_SOURCE >= 700 || _POSIX_C_SOURCE >= 200809L
-#define HAVE_BUP_UTIMENSAT 1
+#ifndef HAVE_UTIMENSAT
+#ifndef HAVE_UTIMES
+#error "cannot find utimensat or utimes()"
+#endif
+#ifndef HAVE_LUTIMES
+#error "cannot find utimensat or lutimes()"
+#endif
+#endif
+
+#define ASSIGN_PYLONG_TO_INTEGRAL(dest, pylong, overflow) \
+ ({ \
+ int result = 0; \
+ *(overflow) = 0; \
+ const long long lltmp = PyLong_AsLongLong(pylong); \
+ if (lltmp == -1 && PyErr_Occurred()) \
+ { \
+ if (PyErr_ExceptionMatches(PyExc_OverflowError)) \
+ { \
+ const unsigned long long ulltmp = PyLong_AsUnsignedLongLong(pylong); \
+ if (ulltmp == (unsigned long long) -1 && PyErr_Occurred()) \
+ { \
+ if (PyErr_ExceptionMatches(PyExc_OverflowError)) \
+ { \
+ PyErr_Clear(); \
+ *(overflow) = 1; \
+ } \
+ } \
+ if (INTEGRAL_ASSIGNMENT_FITS((dest), ulltmp)) \
+ result = 1; \
+ else \
+ *(overflow) = 1; \
+ } \
+ } \
+ else \
+ { \
+ if (INTEGRAL_ASSIGNMENT_FITS((dest), lltmp)) \
+ result = 1; \
+ else \
+ *(overflow) = 1; \
+ } \
+ result; \
+ })
+
+
+#ifdef HAVE_UTIMENSAT
static PyObject *bup_utimensat(PyObject *self, PyObject *args)
{
- int rc, dirfd, flags;
+ int rc;
+ int fd, flag;
char *path;
- long access, access_ns, modification, modification_ns;
+ PyObject *access_py, *modification_py;
struct timespec ts[2];
- if (!PyArg_ParseTuple(args, "is((ll)(ll))i",
- &dirfd,
+ if (!PyArg_ParseTuple(args, "is((Ol)(Ol))i",
+ &fd,
&path,
- &access, &access_ns,
- &modification, &modification_ns,
- &flags))
+ &access_py, &(ts[0].tv_nsec),
+ &modification_py, &(ts[1].tv_nsec),
+ &flag))
return NULL;
- if (isnan(access))
- {
- PyErr_SetString(PyExc_ValueError, "access time is NaN");
- return NULL;
- }
- else if (isinf(access))
- {
- PyErr_SetString(PyExc_ValueError, "access time is infinite");
- return NULL;
- }
- else if (isnan(modification))
+ int overflow;
+ if (!ASSIGN_PYLONG_TO_INTEGRAL(&(ts[0].tv_sec), access_py, &overflow))
{
- PyErr_SetString(PyExc_ValueError, "modification time is NaN");
+ if (overflow)
+ PyErr_SetString(PyExc_ValueError,
+ "unable to convert access time seconds for utimensat");
return NULL;
}
- else if (isinf(modification))
+ if (!ASSIGN_PYLONG_TO_INTEGRAL(&(ts[1].tv_sec), modification_py, &overflow))
{
- PyErr_SetString(PyExc_ValueError, "modification time is infinite");
+ if (overflow)
+ PyErr_SetString(PyExc_ValueError,
+ "unable to convert modification time seconds for utimensat");
return NULL;
}
+ rc = utimensat(fd, path, ts, flag);
+ if (rc != 0)
+ return PyErr_SetFromErrnoWithFilename(PyExc_OSError, path);
+
+ return Py_BuildValue("O", Py_None);
+}
+
+#endif /* def HAVE_UTIMENSAT */
+
+
+#if defined(HAVE_UTIMES) || defined(HAVE_LUTIMES)
- if (isnan(access_ns))
+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))
{
- PyErr_SetString(PyExc_ValueError, "access time ns is NaN");
- return NULL;
+ if (overflow)
+ PyErr_SetString(PyExc_ValueError, "unable to convert access time seconds to timeval");
+ return 0;
}
- else if (isinf(access_ns))
+ if (!INTEGRAL_ASSIGNMENT_FITS(&(tv[0].tv_usec), access_us))
{
- PyErr_SetString(PyExc_ValueError, "access time ns is infinite");
- return NULL;
+ PyErr_SetString(PyExc_ValueError, "unable to convert access time nanoseconds to timeval");
+ return 0;
}
- else if (isnan(modification_ns))
+ if (!ASSIGN_PYLONG_TO_INTEGRAL(&(tv[1].tv_sec), modification_py, &overflow))
{
- PyErr_SetString(PyExc_ValueError, "modification time ns is NaN");
- return NULL;
+ if (overflow)
+ PyErr_SetString(PyExc_ValueError, "unable to convert modification time seconds to timeval");
+ return 0;
}
- else if (isinf(modification_ns))
+ if (!INTEGRAL_ASSIGNMENT_FITS(&(tv[1].tv_usec), modification_us))
{
- PyErr_SetString(PyExc_ValueError, "modification time ns is infinite");
- return NULL;
+ 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
+static PyObject *bup_utimes(PyObject *self, PyObject *args)
+{
+ char *path;
+ struct timeval tv[2];
+ 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 */
- ts[0].tv_sec = access;
- ts[0].tv_nsec = access_ns;
- ts[1].tv_sec = modification;
- ts[1].tv_nsec = modification_ns;
- rc = utimensat(dirfd, path, ts, flags);
+#ifdef HAVE_LUTIMES
+static PyObject *bup_lutimes(PyObject *self, PyObject *args)
+{
+ char *path;
+ struct timeval tv[2];
+ if (!bup_parse_xutimes_args(&path, tv, args))
+ return NULL;
+ int rc = lutimes(path, tv);
if (rc != 0)
- return PyErr_SetFromErrnoWithFilename(PyExc_IOError, path);
+ return PyErr_SetFromErrnoWithFilename(PyExc_OSError, path);
- Py_RETURN_TRUE;
+ return Py_BuildValue("O", Py_None);
}
+#endif /* def HAVE_LUTIMES */
+
+
+#ifdef HAVE_STAT_ST_ATIM
+# define BUP_STAT_ATIME_NS(st) (st)->st_atim.tv_nsec
+# define BUP_STAT_MTIME_NS(st) (st)->st_mtim.tv_nsec
+# define BUP_STAT_CTIME_NS(st) (st)->st_ctim.tv_nsec
+#elif defined HAVE_STAT_ST_ATIMENSEC
+# define BUP_STAT_ATIME_NS(st) (st)->st_atimespec.tv_nsec
+# define BUP_STAT_MTIME_NS(st) (st)->st_mtimespec.tv_nsec
+# define BUP_STAT_CTIME_NS(st) (st)->st_ctimespec.tv_nsec
+#else
+# define BUP_STAT_ATIME_NS(st) 0
+# define BUP_STAT_MTIME_NS(st) 0
+# define BUP_STAT_CTIME_NS(st) 0
+#endif
-#endif /* _XOPEN_SOURCE >= 700 || _POSIX_C_SOURCE >= 200809L */
+#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)
+{
+ // 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(). 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_nlink),
+ INTEGER_TO_PY(st->st_uid),
+ INTEGER_TO_PY(st->st_gid),
+ INTEGER_TO_PY(st->st_rdev),
+ (PY_LONG_LONG) st->st_size,
+ 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)
+{
+ int rc;
+ char *filename;
+
+ if (!PyArg_ParseTuple(args, "s", &filename))
+ return NULL;
+
+ struct stat st;
+ rc = stat(filename, &st);
+ if (rc != 0)
+ return PyErr_SetFromErrnoWithFilename(PyExc_OSError, filename);
+ return stat_struct_to_py(&st, filename, 0);
+}
-#ifdef linux /* and likely others */
-#define HAVE_BUP_LSTAT 1
static PyObject *bup_lstat(PyObject *self, PyObject *args)
{
struct stat st;
rc = lstat(filename, &st);
if (rc != 0)
- return PyErr_SetFromErrnoWithFilename(PyExc_IOError, filename);
-
- return Py_BuildValue("kkkkkkkk"
- "(ll)"
- "(ll)"
- "(ll)",
- (unsigned long) st.st_mode,
- (unsigned long) st.st_ino,
- (unsigned long) st.st_dev,
- (unsigned long) st.st_nlink,
- (unsigned long) st.st_uid,
- (unsigned long) st.st_gid,
- (unsigned long) st.st_rdev,
- (unsigned long) st.st_size,
- (long) st.st_atime,
- (long) st.st_atim.tv_nsec,
- (long) st.st_mtime,
- (long) st.st_mtim.tv_nsec,
- (long) st.st_ctime,
- (long) st.st_ctim.tv_nsec);
-}
-
-#endif /* def linux */
+ return PyErr_SetFromErrnoWithFilename(PyExc_OSError, filename);
+ return stat_struct_to_py(&st, filename, 0);
+}
+
+
+static PyObject *bup_fstat(PyObject *self, PyObject *args)
+{
+ int rc, fd;
+
+ if (!PyArg_ParseTuple(args, "i", &fd))
+ return NULL;
+
+ struct stat st;
+ rc = fstat(fd, &st);
+ if (rc != 0)
+ return PyErr_SetFromErrno(PyExc_OSError);
+ return stat_struct_to_py(&st, NULL, fd);
+}
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,
"Count the number of matching prefix bits between two strings." },
{ "firstword", firstword, METH_VARARGS,
"Return an int corresponding to the first 32 bits of buf." },
+ { "bloom_contains", bloom_contains, METH_VARARGS,
+ "Check if a bloom filter of 2^nbits bytes contains an object" },
+ { "bloom_add", bloom_add, METH_VARARGS,
+ "Add an object to a bloom filter of 2^nbits bytes" },
{ "extract_bits", extract_bits, METH_VARARGS,
"Take the first 'nbits' bits from 'buf' and return them as an int." },
+ { "merge_into", merge_into, METH_VARARGS,
+ "Merges a bunch of idx and midx files into a single midx." },
+ { "write_idx", write_idx, METH_VARARGS,
+ "Write a PackIdxV2 file from an idx list of lists of tuples" },
{ "write_random", write_random, METH_VARARGS,
"Write random bytes to the given file descriptor" },
+ { "random_sha", random_sha, METH_VARARGS,
+ "Return a random 20-byte string" },
{ "open_noatime", open_noatime, METH_VARARGS,
"open() the given filename for read with O_NOATIME if possible" },
{ "fadvise_done", fadvise_done, METH_VARARGS,
"Inform the kernel that we're finished with earlier parts of a file" },
-#ifdef linux
+#ifdef BUP_HAVE_FILE_ATTRS
{ "get_linux_file_attr", bup_get_linux_file_attr, METH_VARARGS,
"Return the Linux attributes for the given file." },
+#endif
+#ifdef BUP_HAVE_FILE_ATTRS
{ "set_linux_file_attr", bup_set_linux_file_attr, METH_VARARGS,
"Set the Linux attributes for the given file." },
#endif
-#ifdef HAVE_BUP_UTIMENSAT
- { "utimensat", bup_utimensat, METH_VARARGS,
- "Change file timestamps with nanosecond precision." },
+#ifdef HAVE_UTIMENSAT
+ { "bup_utimensat", bup_utimensat, METH_VARARGS,
+ "Change path timestamps with nanosecond precision (POSIX)." },
+#endif
+#ifdef HAVE_UTIMES
+ { "bup_utimes", bup_utimes, METH_VARARGS,
+ "Change path timestamps with microsecond precision." },
+#endif
+#ifdef HAVE_LUTIMES
+ { "bup_lutimes", bup_lutimes, METH_VARARGS,
+ "Change path timestamps with microsecond precision;"
+ " don't follow symlinks." },
#endif
-#ifdef HAVE_BUP_LSTAT
+ { "stat", bup_stat, METH_VARARGS,
+ "Extended version of stat." },
{ "lstat", bup_lstat, METH_VARARGS,
"Extended version of lstat." },
-#endif
+ { "fstat", bup_fstat, METH_VARARGS,
+ "Extended version of fstat." },
{ NULL, NULL, 0, NULL }, // sentinel
};
PyMODINIT_FUNC init_helpers(void)
{
+ // FIXME: migrate these tests to configure. Check against the
+ // type we're going to use when passing to python. Other stat
+ // types are tested at runtime.
+ assert(sizeof(ino_t) <= sizeof(unsigned PY_LONG_LONG));
+ assert(sizeof(off_t) <= sizeof(PY_LONG_LONG));
+ assert(sizeof(blksize_t) <= sizeof(PY_LONG_LONG));
+ 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;
-#ifdef HAVE_BUP_UTIMENSAT
- PyModule_AddObject(m, "AT_FDCWD", Py_BuildValue("i", AT_FDCWD));
- PyModule_AddObject(m, "AT_SYMLINK_NOFOLLOW",
- Py_BuildValue("i", AT_SYMLINK_NOFOLLOW));
+
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wtautological-compare" // For INTEGER_TO_PY().
+#ifdef HAVE_UTIMENSAT
+ {
+ PyObject *value;
+ value = INTEGER_TO_PY(AT_FDCWD);
+ PyObject_SetAttrString(m, "AT_FDCWD", value);
+ Py_DECREF(value);
+ value = INTEGER_TO_PY(AT_SYMLINK_NOFOLLOW);
+ PyObject_SetAttrString(m, "AT_SYMLINK_NOFOLLOW", value);
+ Py_DECREF(value);
+ value = INTEGER_TO_PY(UTIME_NOW);
+ PyObject_SetAttrString(m, "UTIME_NOW", 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);
+ unpythonize_argv();
}
projects / bup.git / blobdiff