Asterisk - The Open Source Telephony Project  GIT-master-a1fa8df
Functions
rec_get.c File Reference
#include <sys/types.h>
#include <errno.h>
#include <stddef.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "../include/db.h"
#include "recno.h"

Go to the source code of this file.

Functions

int __rec_fmap (BTREE *t, recno_t top)
 
int __rec_fpipe (BTREE *t, recno_t top)
 
int __rec_get (DB *dbp, const DBT *key, DBT *data, u_int flags) const
 
int __rec_vmap (BTREE *t, recno_t top)
 
int __rec_vpipe (BTREE *t, recno_t top)
 

Function Documentation

◆ __rec_fmap()

int __rec_fmap ( BTREE t,
recno_t  top 
)

Definition at line 235 of file rec_get.c.

References __rec_iput(), _btree::bt_bval, _btree::bt_cmap, _btree::bt_emap, _btree::bt_nrecs, _btree::bt_rdata, _btree::bt_reclen, DBT::data, F_SET, len(), malloc(), NULL, R_EOF, realloc, RET_ERROR, RET_SPECIAL, RET_SUCCESS, and DBT::size.

Referenced by __rec_open().

238 {
239  DBT data;
240  recno_t nrec;
241  u_char *sp, *ep, *p;
242  size_t len;
243 
244  if (t->bt_rdata.size < t->bt_reclen) {
245  t->bt_rdata.data = t->bt_rdata.data == NULL ?
246  malloc(t->bt_reclen) :
247  realloc(t->bt_rdata.data, t->bt_reclen);
248  if (t->bt_rdata.data == NULL)
249  return (RET_ERROR);
250  t->bt_rdata.size = t->bt_reclen;
251  }
252  data.data = t->bt_rdata.data;
253  data.size = t->bt_reclen;
254 
255  sp = (u_char *)t->bt_cmap;
256  ep = (u_char *)t->bt_emap;
257  for (nrec = t->bt_nrecs; nrec < top; ++nrec) {
258  if (sp >= ep) {
259  F_SET(t, R_EOF);
260  return (RET_SPECIAL);
261  }
262  len = t->bt_reclen;
263  for (p = t->bt_rdata.data;
264  sp < ep && len > 0; *p++ = *sp++, --len);
265  if (len != 0)
266  memset(p, t->bt_bval, len);
267  if (__rec_iput(t, nrec, &data, 0) != RET_SUCCESS)
268  return (RET_ERROR);
269  }
270  t->bt_cmap = (caddr_t)sp;
271  return (RET_SUCCESS);
272 }
void * data
Definition: db.h:86
size_t size
Definition: db.h:87
#define RET_ERROR
Definition: db.h:51
#define realloc(a, b)
Definition: astmm.h:163
#define F_SET(p, f)
Definition: btree.h:40
Definition: db.h:85
#define NULL
Definition: resample.c:96
recno_t bt_nrecs
Definition: btree.h:360
char * malloc()
u_char bt_bval
Definition: btree.h:362
#define RET_SUCCESS
Definition: db.h:52
DBT bt_rdata
Definition: btree.h:333
static int len(struct ast_channel *chan, const char *cmd, char *data, char *buf, size_t buflen)
#define R_EOF
Definition: btree.h:378
size_t bt_reclen
Definition: btree.h:361
caddr_t bt_cmap
Definition: btree.h:355
#define RET_SPECIAL
Definition: db.h:53
u_int32_t recno_t
Definition: db.h:82
caddr_t bt_emap
Definition: btree.h:357
int __rec_iput(BTREE *t, recno_t nrec, const DBT *data, u_int flags)
Definition: rec_put.c:190

◆ __rec_fpipe()

int __rec_fpipe ( BTREE t,
recno_t  top 
)

Definition at line 122 of file rec_get.c.

References __rec_iput(), _btree::bt_bval, _btree::bt_nrecs, _btree::bt_rdata, _btree::bt_reclen, _btree::bt_rfp, DBT::data, F_SET, len(), malloc(), NULL, R_EOF, realloc, RET_ERROR, RET_SPECIAL, RET_SUCCESS, and DBT::size.

Referenced by __rec_open().

125 {
126  DBT data;
127  recno_t nrec;
128  size_t len;
129  int ch;
130  u_char *p;
131 
132  if (t->bt_rdata.size < t->bt_reclen) {
133  t->bt_rdata.data = t->bt_rdata.data == NULL ?
134  malloc(t->bt_reclen) :
135  realloc(t->bt_rdata.data, t->bt_reclen);
136  if (t->bt_rdata.data == NULL)
137  return (RET_ERROR);
138  t->bt_rdata.size = t->bt_reclen;
139  }
140  data.data = t->bt_rdata.data;
141  data.size = t->bt_reclen;
142 
143  for (nrec = t->bt_nrecs; nrec < top;) {
144  len = t->bt_reclen;
145  for (p = t->bt_rdata.data;; *p++ = ch)
146  if ((ch = getc(t->bt_rfp)) == EOF || !--len) {
147  if (ch != EOF)
148  *p = ch;
149  if (len != 0)
150  memset(p, t->bt_bval, len);
151  if (__rec_iput(t,
152  nrec, &data, 0) != RET_SUCCESS)
153  return (RET_ERROR);
154  ++nrec;
155  break;
156  }
157  if (ch == EOF)
158  break;
159  }
160  if (nrec < top) {
161  F_SET(t, R_EOF);
162  return (RET_SPECIAL);
163  }
164  return (RET_SUCCESS);
165 }
void * data
Definition: db.h:86
size_t size
Definition: db.h:87
#define RET_ERROR
Definition: db.h:51
#define realloc(a, b)
Definition: astmm.h:163
#define F_SET(p, f)
Definition: btree.h:40
Definition: db.h:85
#define NULL
Definition: resample.c:96
recno_t bt_nrecs
Definition: btree.h:360
char * malloc()
u_char bt_bval
Definition: btree.h:362
#define RET_SUCCESS
Definition: db.h:52
DBT bt_rdata
Definition: btree.h:333
FILE * bt_rfp
Definition: btree.h:352
static int len(struct ast_channel *chan, const char *cmd, char *data, char *buf, size_t buflen)
#define R_EOF
Definition: btree.h:378
size_t bt_reclen
Definition: btree.h:361
#define RET_SPECIAL
Definition: db.h:53
u_int32_t recno_t
Definition: db.h:82
int __rec_iput(BTREE *t, recno_t nrec, const DBT *data, u_int flags)
Definition: rec_put.c:190

◆ __rec_get()

int __rec_get ( DB dbp,
const DBT key,
DBT data,
u_int  flags 
) const

Definition at line 63 of file rec_get.c.

References __rec_ret(), __rec_search(), B_DB_LOCK, _btree::bt_mp, _btree::bt_nrecs, _btree::bt_pinned, DBT::data, errno, F_ISSET, __db::internal, mpool_put(), NULL, _epg::page, R_EOF, R_INMEM, RET_ERROR, RET_SPECIAL, RET_SUCCESS, SEARCH, and status.

Referenced by __rec_open().

68 {
69  BTREE *t;
70  EPG *e;
71  recno_t nrec;
72  int status;
73 
74  t = dbp->internal;
75 
76  /* Toss any page pinned across calls. */
77  if (t->bt_pinned != NULL) {
78  mpool_put(t->bt_mp, t->bt_pinned, 0);
79  t->bt_pinned = NULL;
80  }
81 
82  /* Get currently doesn't take any flags, and keys of 0 are illegal. */
83  if (flags || (nrec = *(recno_t *)key->data) == 0) {
84  errno = EINVAL;
85  return (RET_ERROR);
86  }
87 
88  /*
89  * If we haven't seen this record yet, try to find it in the
90  * original file.
91  */
92  if (nrec > t->bt_nrecs) {
93  if (F_ISSET(t, R_EOF | R_INMEM))
94  return (RET_SPECIAL);
95  if ((status = t->bt_irec(t, nrec)) != RET_SUCCESS)
96  return (status);
97  }
98 
99  --nrec;
100  if ((e = __rec_search(t, nrec, SEARCH)) == NULL)
101  return (RET_ERROR);
102 
103  status = __rec_ret(t, e, 0, NULL, data);
104  if (F_ISSET(t, B_DB_LOCK))
105  mpool_put(t->bt_mp, e->page, 0);
106  else
107  t->bt_pinned = e->page;
108  return (status);
109 }
void * data
Definition: db.h:86
#define RET_ERROR
Definition: db.h:51
#define F_ISSET(p, f)
Definition: btree.h:42
int mpool_put(MPOOL *mp, void *page, u_int flags)
Definition: mpool.c:251
Definition: btree.h:254
void * internal
Definition: db.h:137
#define NULL
Definition: resample.c:96
EPG * __rec_search(BTREE *t, recno_t recno, enum SRCHOP op)
Definition: rec_search.c:64
recno_t bt_nrecs
Definition: btree.h:360
Definition: btree.h:312
int __rec_ret(BTREE *t, EPG *e, recno_t nrec, DBT *key, DBT *data)
Definition: rec_utils.c:62
#define RET_SUCCESS
Definition: db.h:52
PAGE * bt_pinned
Definition: btree.h:318
PAGE * page
Definition: btree.h:255
MPOOL * bt_mp
Definition: btree.h:313
int errno
#define R_INMEM
Definition: btree.h:381
Definition: recno.h:36
#define R_EOF
Definition: btree.h:378
#define RET_SPECIAL
Definition: db.h:53
u_int32_t recno_t
Definition: db.h:82
#define B_DB_LOCK
Definition: btree.h:385
jack_status_t status
Definition: app_jack.c:146

◆ __rec_vmap()

int __rec_vmap ( BTREE t,
recno_t  top 
)

Definition at line 285 of file rec_get.c.

References __rec_iput(), _btree::bt_bval, _btree::bt_cmap, _btree::bt_emap, _btree::bt_nrecs, DBT::data, F_SET, if(), R_EOF, RET_ERROR, RET_SPECIAL, RET_SUCCESS, and DBT::size.

Referenced by __rec_open().

288 {
289  DBT data;
290  u_char *sp, *ep;
291  recno_t nrec;
292  int bval;
293 
294  sp = (u_char *)t->bt_cmap;
295  ep = (u_char *)t->bt_emap;
296  bval = t->bt_bval;
297 
298  for (nrec = t->bt_nrecs; nrec < top; ++nrec) {
299  if (sp >= ep) {
300  F_SET(t, R_EOF);
301  return (RET_SPECIAL);
302  }
303  for (data.data = sp; sp < ep && *sp != bval; ++sp);
304  data.size = sp - (u_char *)data.data;
305  if (__rec_iput(t, nrec, &data, 0) != RET_SUCCESS)
306  return (RET_ERROR);
307  ++sp;
308  }
309  t->bt_cmap = (caddr_t)sp;
310  return (RET_SUCCESS);
311 }
void * data
Definition: db.h:86
size_t size
Definition: db.h:87
#define RET_ERROR
Definition: db.h:51
#define F_SET(p, f)
Definition: btree.h:40
if(!yyg->yy_init)
Definition: ast_expr2f.c:868
Definition: db.h:85
recno_t bt_nrecs
Definition: btree.h:360
u_char bt_bval
Definition: btree.h:362
#define RET_SUCCESS
Definition: db.h:52
#define R_EOF
Definition: btree.h:378
caddr_t bt_cmap
Definition: btree.h:355
#define RET_SPECIAL
Definition: db.h:53
u_int32_t recno_t
Definition: db.h:82
caddr_t bt_emap
Definition: btree.h:357
int __rec_iput(BTREE *t, recno_t nrec, const DBT *data, u_int flags)
Definition: rec_put.c:190

◆ __rec_vpipe()

int __rec_vpipe ( BTREE t,
recno_t  top 
)

Definition at line 178 of file rec_get.c.

References __rec_iput(), _btree::bt_bval, _btree::bt_nrecs, _btree::bt_rdata, _btree::bt_rfp, DBT::data, F_SET, if(), len(), malloc(), NULL, R_EOF, realloc, RET_ERROR, RET_SPECIAL, RET_SUCCESS, and DBT::size.

Referenced by __rec_open().

181 {
182  DBT data;
183  recno_t nrec;
184  indx_t len;
185  size_t sz;
186  int bval, ch;
187  u_char *p;
188 
189  bval = t->bt_bval;
190  for (nrec = t->bt_nrecs; nrec < top; ++nrec) {
191  for (p = t->bt_rdata.data,
192  sz = t->bt_rdata.size;; *p++ = ch, --sz) {
193  if ((ch = getc(t->bt_rfp)) == EOF || ch == bval) {
194  data.data = t->bt_rdata.data;
195  data.size = p - (u_char *)t->bt_rdata.data;
196  if (ch == EOF && data.size == 0)
197  break;
198  if (__rec_iput(t, nrec, &data, 0)
199  != RET_SUCCESS)
200  return (RET_ERROR);
201  break;
202  }
203  if (sz == 0) {
204  len = p - (u_char *)t->bt_rdata.data;
205  t->bt_rdata.size += (sz = 256);
206  t->bt_rdata.data = t->bt_rdata.data == NULL ?
207  malloc(t->bt_rdata.size) :
208  realloc(t->bt_rdata.data, t->bt_rdata.size);
209  if (t->bt_rdata.data == NULL)
210  return (RET_ERROR);
211  p = (u_char *)t->bt_rdata.data + len;
212  }
213  }
214  if (ch == EOF)
215  break;
216  }
217  if (nrec < top) {
218  F_SET(t, R_EOF);
219  return (RET_SPECIAL);
220  }
221  return (RET_SUCCESS);
222 }
void * data
Definition: db.h:86
size_t size
Definition: db.h:87
#define RET_ERROR
Definition: db.h:51
#define realloc(a, b)
Definition: astmm.h:163
#define F_SET(p, f)
Definition: btree.h:40
if(!yyg->yy_init)
Definition: ast_expr2f.c:868
Definition: db.h:85
#define NULL
Definition: resample.c:96
u_int16_t indx_t
Definition: db.h:80
recno_t bt_nrecs
Definition: btree.h:360
char * malloc()
u_char bt_bval
Definition: btree.h:362
#define RET_SUCCESS
Definition: db.h:52
DBT bt_rdata
Definition: btree.h:333
FILE * bt_rfp
Definition: btree.h:352
static int len(struct ast_channel *chan, const char *cmd, char *data, char *buf, size_t buflen)
#define R_EOF
Definition: btree.h:378
#define RET_SPECIAL
Definition: db.h:53
u_int32_t recno_t
Definition: db.h:82
int __rec_iput(BTREE *t, recno_t nrec, const DBT *data, u_int flags)
Definition: rec_put.c:190