+#define _LARGEFILE64_SOURCE 1
+#undef NDEBUG
+#include "../../config/config.h"
#include "bupsplit.h"
#include <Python.h>
#include <assert.h>
-#include <stdint.h>
+#include <errno.h>
#include <fcntl.h>
#include <arpa/inet.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <stdio.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 HAVE_LINUX_FS_H
+#include <linux/fs.h>
+#endif
+#ifdef HAVE_SYS_IOCTL_H
+#include <sys/ioctl.h>
+#endif
+
+#if defined(FS_IOC_GETFLAGS) && defined(FS_IOC_SETFLAGS)
+#define BUP_HAVE_FILE_ATTRS 1
+#endif
+
+#ifndef FS_NOCOW_FL
+// Of course, this assumes it's a bitfield value.
+#define FS_NOCOW_FL 0
+#endif
+
+static int istty2 = 0;
+
+// 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 PyObject *selftest(PyObject *self, PyObject *args)
{
if (!PyArg_ParseTuple(args, "t#", &buf, &len))
return NULL;
out = bupsplit_find_ofs(buf, len, &bits);
+ if (out) assert(bits >= BUP_BLOBBITS);
return Py_BuildValue("ii", out, bits);
}
}
+#define BLOOM2_HEADERLEN 16
+
+typedef struct {
+ uint32_t high;
+ unsigned char low;
+} bits40_t;
+
+static void to_bloom_address_bitmask4(const bits40_t *buf,
+ const int nbits, uint64_t *v, unsigned char *bitmask)
+{
+ int bit;
+ uint64_t raw, mask;
+
+ mask = (1<<nbits) - 1;
+ raw = (((uint64_t)ntohl(buf->high)) << 8) | buf->low;
+ bit = (raw >> (37-nbits)) & 0x7;
+ *v = (raw >> (40-nbits)) & mask;
+ *bitmask = 1 << bit;
+}
+
+static void to_bloom_address_bitmask5(const uint32_t *buf,
+ const int nbits, uint32_t *v, unsigned char *bitmask)
+{
+ int bit;
+ uint32_t raw, mask;
+
+ mask = (1<<nbits) - 1;
+ raw = ntohl(*buf);
+ bit = (raw >> (29-nbits)) & 0x7;
+ *v = (raw >> (32-nbits)) & mask;
+ *bitmask = 1 << bit;
+}
+
+#define BLOOM_SET_BIT(name, address, itype, otype) \
+static void name(unsigned char *bloom, const void *buf, const int nbits)\
+{\
+ unsigned char bitmask;\
+ otype v;\
+ address((itype *)buf, nbits, &v, &bitmask);\
+ bloom[BLOOM2_HEADERLEN+v] |= bitmask;\
+}
+BLOOM_SET_BIT(bloom_set_bit4, to_bloom_address_bitmask4, bits40_t, uint64_t)
+BLOOM_SET_BIT(bloom_set_bit5, to_bloom_address_bitmask5, uint32_t, uint32_t)
+
+
+#define BLOOM_GET_BIT(name, address, itype, otype) \
+static int name(const unsigned char *bloom, const void *buf, const int nbits)\
+{\
+ unsigned char bitmask;\
+ otype v;\
+ address((itype *)buf, nbits, &v, &bitmask);\
+ return bloom[BLOOM2_HEADERLEN+v] & bitmask;\
+}
+BLOOM_GET_BIT(bloom_get_bit4, to_bloom_address_bitmask4, bits40_t, uint64_t)
+BLOOM_GET_BIT(bloom_get_bit5, to_bloom_address_bitmask5, uint32_t, uint32_t)
+
+
+static PyObject *bloom_add(PyObject *self, PyObject *args)
+{
+ unsigned char *sha = NULL, *bloom = NULL;
+ unsigned char *end;
+ int len = 0, blen = 0, 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("i", len/20);
+}
+
+static PyObject *bloom_contains(PyObject *self, PyObject *args)
+{
+ unsigned char *sha = NULL, *bloom = NULL;
+ int len = 0, blen = 0, 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;
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 PyLong_FromUnsignedLong(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;
+ long 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 *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;
+ int flen = 0, bits = 0, i;
+ uint32_t total, count, prefix;
+ int num_i;
+ int last_i;
+
+ if (!PyArg_ParseTuple(args, "w#iIO", &fmap, &flen, &bits, &total, &ilist))
+ 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);
+}
+
+// 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 PACK_IDX_V2_HEADERLEN 8
+#define FAN_ENTRIES 256
+
+static PyObject *write_idx(PyObject *self, PyObject *args)
+{
+ PyObject *pf = NULL, *idx = NULL;
+ PyObject *part;
+ FILE *f;
+ unsigned char *fmap = NULL;
+ int flen = 0;
+ uint32_t total = 0;
+ uint32_t count;
+ int i, j, ofs64_count;
+ uint32_t *fan_ptr, *crc_ptr, *ofs_ptr;
+ struct sha *sha_ptr;
+
+ if (!PyArg_ParseTuple(args, "Ow#OI", &pf, &fmap, &flen, &idx, &total))
+ return NULL;
+
+ fan_ptr = (uint32_t *)&fmap[PACK_IDX_V2_HEADERLEN];
+ sha_ptr = (struct sha *)&fan_ptr[FAN_ENTRIES];
+ crc_ptr = (uint32_t *)&sha_ptr[total];
+ ofs_ptr = (uint32_t *)&crc_ptr[total];
+ f = PyFile_AsFile(pf);
+
+ 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;
+ int sha_len = 0;
+ uint32_t crc = 0;
+ uint64_t ofs = 0;
+ if (!PyArg_ParseTuple(PyList_GET_ITEM(part, j), "t#IK",
+ &sha, &sha_len, &crc, &ofs))
+ return NULL;
+ if (sha_len != sizeof(struct sha))
+ return NULL;
+ memcpy(sha_ptr++, sha, sizeof(struct sha));
+ *crc_ptr++ = htonl(crc);
+ if (ofs > 0x7fffffff)
+ {
+ uint64_t nofs = htonll(ofs);
+ if (fwrite(&nofs, sizeof(uint64_t), 1, f) != 1)
+ return PyErr_SetFromErrno(PyExc_OSError);
+ ofs = 0x80000000 | ofs64_count++;
+ }
+ *ofs_ptr++ = htonl((uint32_t)ofs);
+ }
+ }
+ return PyLong_FromUnsignedLong(count);
}
}
-static PyObject *random_partial_sha(PyObject *self, PyObject *args)
+static PyObject *random_sha(PyObject *self, PyObject *args)
{
static int seeded = 0;
uint32_t shabuf[20/4];
+ int i;
if (!seeded)
{
return NULL;
memset(shabuf, 0, sizeof(shabuf));
- shabuf[0] = random();
+ for (i=0; i < 20/4; i++)
+ shabuf[i] = random();
return Py_BuildValue("s#", shabuf, 20);
}
-static PyObject *open_noatime(PyObject *self, PyObject *args)
+static int _open_noatime(const char *filename, int attrs)
{
- char *filename = NULL;
- int attrs, attrs_noatime, fd;
- if (!PyArg_ParseTuple(args, "s", &filename))
- return NULL;
- attrs = O_RDONLY;
+ 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);
}
}
-static PyMethodDef faster_methods[] = {
+#ifdef BUP_HAVE_FILE_ATTRS
+static PyObject *bup_get_linux_file_attr(PyObject *self, PyObject *args)
+{
+ int rc;
+ unsigned long attr;
+ char *path;
+ int fd;
+
+ if (!PyArg_ParseTuple(args, "s", &path))
+ return NULL;
+
+ fd = _open_noatime(path, O_NONBLOCK);
+ if (fd == -1)
+ return PyErr_SetFromErrnoWithFilename(PyExc_OSError, path);
+
+ attr = 0;
+ rc = ioctl(fd, FS_IOC_GETFLAGS, &attr);
+ if (rc == -1)
+ {
+ close(fd);
+ return PyErr_SetFromErrnoWithFilename(PyExc_OSError, path);
+ }
+
+ close(fd);
+ return Py_BuildValue("k", 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 orig_attr, attr;
+ char *path;
+ int fd;
+
+ if (!PyArg_ParseTuple(args, "sk", &path, &attr))
+ return NULL;
+
+ fd = open(path, O_RDONLY | O_NONBLOCK | O_LARGEFILE | O_NOFOLLOW);
+ 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).
+ rc = ioctl(fd, FS_IOC_GETFLAGS, &orig_attr);
+ if (rc == -1)
+ {
+ close(fd);
+ return PyErr_SetFromErrnoWithFilename(PyExc_OSError, path);
+ }
+ attr |= (orig_attr & FS_EXTENT_FL);
+
+ rc = ioctl(fd, FS_IOC_SETFLAGS, &attr);
+ if (rc == -1)
+ {
+ close(fd);
+ return PyErr_SetFromErrnoWithFilename(PyExc_OSError, path);
+ }
+
+ close(fd);
+ return Py_BuildValue("O", Py_None);
+}
+#endif /* def BUP_HAVE_FILE_ATTRS */
+
+
+#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) */
+
+
+#ifdef HAVE_UTIMENSAT
+
+static PyObject *bup_xutime_ns(PyObject *self, PyObject *args,
+ int follow_symlinks)
+{
+ int rc;
+ char *path;
+ long access, access_ns, modification, modification_ns;
+ struct timespec ts[2];
+
+ if (!bup_parse_xutime_args(&path, &access, &access_ns,
+ &modification, &modification_ns,
+ self, args))
+ return NULL;
+
+ ts[0].tv_sec = access;
+ ts[0].tv_nsec = access_ns;
+ ts[1].tv_sec = modification;
+ ts[1].tv_nsec = modification_ns;
+ rc = utimensat(AT_FDCWD, path, ts,
+ follow_symlinks ? 0 : AT_SYMLINK_NOFOLLOW);
+ if (rc != 0)
+ return PyErr_SetFromErrnoWithFilename(PyExc_OSError, path);
+
+ return Py_BuildValue("O", Py_None);
+}
+
+
+#define BUP_HAVE_BUP_UTIME_NS 1
+static PyObject *bup_utime_ns(PyObject *self, PyObject *args)
+{
+ return bup_xutime_ns(self, args, 1);
+}
+
+
+#define BUP_HAVE_BUP_LUTIME_NS 1
+static PyObject *bup_lutime_ns(PyObject *self, PyObject *args)
+{
+ return bup_xutime_ns(self, args, 0);
+}
+
+
+#else /* not defined(HAVE_UTIMENSAT) */
+
+
+#ifdef HAVE_UTIMES
+#define BUP_HAVE_BUP_UTIME_NS 1
+static PyObject *bup_utime_ns(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 (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)
+{
+ 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 (rc != 0)
+ return PyErr_SetFromErrnoWithFilename(PyExc_OSError, path);
+
+ return Py_BuildValue("O", Py_None);
+}
+#endif /* def HAVE_LUTIMES */
+
+
+#endif /* not defined(HAVE_UTIMENSAT) */
+
+
+#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
+
+
+static PyObject *stat_struct_to_py(const struct stat *st)
+{
+ long atime_ns = BUP_STAT_ATIME_NS(st);
+ long mtime_ns = BUP_STAT_MTIME_NS(st);
+ long ctime_ns = BUP_STAT_CTIME_NS(st);
+
+ /* Enforce the current timespec nanosecond range expectations. */
+ if (atime_ns < 0 || atime_ns > 999999999)
+ {
+ PyErr_SetString(PyExc_ValueError, "invalid atime timespec nanoseconds");
+ return NULL;
+ }
+ if (mtime_ns < 0 || mtime_ns > 999999999)
+ {
+ PyErr_SetString(PyExc_ValueError, "invalid mtime timespec nanoseconds");
+ return NULL;
+ }
+ if (ctime_ns < 0 || ctime_ns > 999999999)
+ {
+ PyErr_SetString(PyExc_ValueError, "invalid ctime timespec nanoseconds");
+ return NULL;
+ }
+
+ 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 long) st->st_atime,
+ (long) atime_ns,
+ (long long) st->st_mtime,
+ (long) mtime_ns,
+ (long long) st->st_ctime,
+ (long) ctime_ns);
+}
+
+
+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);
+}
+
+
+static PyObject *bup_lstat(PyObject *self, PyObject *args)
+{
+ int rc;
+ char *filename;
+
+ if (!PyArg_ParseTuple(args, "s", &filename))
+ return NULL;
+
+ struct stat st;
+ rc = lstat(filename, &st);
+ if (rc != 0)
+ return PyErr_SetFromErrnoWithFilename(PyExc_OSError, filename);
+ return stat_struct_to_py(&st);
+}
+
+
+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);
+}
+
+
+static PyMethodDef helper_methods[] = {
{ "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_partial_sha", random_partial_sha, METH_VARARGS,
- "Return a 20-byte string with the first few bytes randomized" },
+ { "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 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 BUP_HAVE_BUP_UTIME_NS
+ { "bup_utime_ns", bup_utime_ns, METH_VARARGS,
+ "Change path timestamps with up to nanosecond precision." },
+#endif
+#ifdef BUP_HAVE_BUP_LUTIME_NS
+ { "bup_lutime_ns", bup_lutime_ns, METH_VARARGS,
+ "Change path timestamps with up to nanosecond precision;"
+ " don't follow symlinks." },
+#endif
+ { "stat", bup_stat, METH_VARARGS,
+ "Extended version of stat." },
+ { "lstat", bup_lstat, METH_VARARGS,
+ "Extended version of lstat." },
+ { "fstat", bup_fstat, METH_VARARGS,
+ "Extended version of fstat." },
{ NULL, NULL, 0, NULL }, // sentinel
};
+
PyMODINIT_FUNC init_helpers(void)
{
- Py_InitModule("_helpers", faster_methods);
+ char *e;
+ PyObject *m = Py_InitModule("_helpers", helper_methods);
+ if (m == NULL)
+ return;
+ e = getenv("BUP_FORCE_TTY");
+ istty2 = isatty(2) || (atoi(e ? e : "0") & 2);
+ unpythonize_argv();
}
projects / bup.git / blobdiff