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184 lines
5.1 KiB
184 lines
5.1 KiB
diff -r -u db-5.3.21_orig/src/mp/mp_stat.c db-5.3.21/src/mp/mp_stat.c
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--- db-5.3.21_orig/src/mp/mp_stat.c 2012-05-12 01:57:53.000000000 +0800
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+++ db-5.3.21/src/mp/mp_stat.c 2015-05-19 15:07:09.000000000 +0800
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@@ -87,6 +87,13 @@
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u_int32_t i;
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uintmax_t tmp_wait, tmp_nowait;
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+ /*
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+ * The array holding the lengths related to the buffer allocated for *fspp.
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+ * The first element of the array holds the number of entries allocated.
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+ * The second element of the array holds the total number of bytes allocated.
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+ */
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+ u_int32_t fsp_len[2];
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+
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dbmp = env->mp_handle;
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mp = dbmp->reginfo[0].primary;
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@@ -193,32 +200,53 @@
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if (fspp != NULL) {
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*fspp = NULL;
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- /* Count the MPOOLFILE structures. */
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- i = 0;
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- len = 0;
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- if ((ret = __memp_walk_files(env,
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- mp, __memp_count_files, &len, &i, flags)) != 0)
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- return (ret);
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+ while (*fspp == NULL) {
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+ /* Count the MPOOLFILE structures. */
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+ i = 0;
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+ /*
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+ * Allow space for the first __memp_get_files() to align the
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+ * structure array to uintmax_t, DB_MPOOL_STAT's most
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+ * restrictive field. [#23150]
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+ */
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+ len = sizeof(uintmax_t);
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+ if ((ret = __memp_walk_files(env,
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+ mp, __memp_count_files, &len, &i, flags)) != 0)
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+ return (ret);
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+
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+ if (i == 0)
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+ return (0);
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+
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+ /*
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+ * Copy the number of DB_MPOOL_FSTAT entries and the number of
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+ * bytes allocated for them into fsp_len. Do not count the space
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+ * reserved for allignment.
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+ */
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+ fsp_len[0] = i;
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+ fsp_len[1] = len - sizeof(uintmax_t);
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- if (i == 0)
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- return (0);
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- len += sizeof(DB_MPOOL_FSTAT *); /* Trailing NULL */
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+ len += sizeof(DB_MPOOL_FSTAT *); /* Trailing NULL */
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- /* Allocate space */
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- if ((ret = __os_umalloc(env, len, fspp)) != 0)
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- return (ret);
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+ /* Allocate space */
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+ if ((ret = __os_umalloc(env, len, fspp)) != 0)
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+ return (ret);
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- tfsp = *fspp;
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- *tfsp = NULL;
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-
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- /*
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- * Files may have been opened since we counted, don't walk
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- * off the end of the allocated space.
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- */
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- if ((ret = __memp_walk_files(env,
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- mp, __memp_get_files, &tfsp, &i, flags)) != 0)
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- return (ret);
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+ tfsp = *fspp;
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+ *tfsp = NULL;
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+ /*
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+ * Files may have been opened since we counted, if we walk off
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+ * the end of the allocated space specified in fsp_len, retry.
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+ */
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+ if ((ret = __memp_walk_files(env,
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+ mp, __memp_get_files, &tfsp, fsp_len, flags)) != 0) {
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+ if (ret == DB_BUFFER_SMALL) {
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+ __os_ufree(env, *fspp);
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+ *fspp = NULL;
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+ tfsp = NULL;
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+ } else
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+ return (ret);
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+ }
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+ }
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*++tfsp = NULL;
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}
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@@ -286,28 +314,35 @@
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* for the text file names.
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*/
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static int
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-__memp_get_files(env, mfp, argp, countp, flags)
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+__memp_get_files(env, mfp, argp, fsp_len, flags)
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ENV *env;
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MPOOLFILE *mfp;
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void *argp;
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- u_int32_t *countp;
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+ u_int32_t fsp_len[];
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u_int32_t flags;
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{
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DB_MPOOL *dbmp;
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DB_MPOOL_FSTAT **tfsp, *tstruct;
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char *name, *tname;
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- size_t nlen;
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+ size_t nlen, tlen;
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- if (*countp == 0)
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- return (0);
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+ /* We walked through more files than argp was allocated for. */
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+ if (fsp_len[0] == 0)
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+ return DB_BUFFER_SMALL;
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dbmp = env->mp_handle;
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tfsp = *(DB_MPOOL_FSTAT ***)argp;
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if (*tfsp == NULL) {
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- /* Add 1 to count because we need to skip over the NULL. */
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- tstruct = (DB_MPOOL_FSTAT *)(tfsp + *countp + 1);
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- tname = (char *)(tstruct + *countp);
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+ /*
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+ * Add 1 to count because to skip over the NULL end marker.
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+ * Align it further for DB_MPOOL_STAT's most restrictive field
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+ * because uintmax_t might require stricter alignment than
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+ * pointers; e.g., IP32 LL64 SPARC. [#23150]
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+ */
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+ tstruct = (DB_MPOOL_FSTAT *)&tfsp[fsp_len[0] + 1];
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+ tstruct = ALIGNP_INC(tstruct, sizeof(uintmax_t));
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+ tname = (char *)&tstruct[fsp_len[0]];
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*tfsp = tstruct;
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} else {
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tstruct = *tfsp + 1;
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@@ -317,6 +352,15 @@
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name = __memp_fns(dbmp, mfp);
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nlen = strlen(name) + 1;
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+
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+ /* The space required for file names is larger than argp was allocated for. */
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+ tlen = sizeof(DB_MPOOL_FSTAT *) + sizeof(DB_MPOOL_FSTAT) + nlen;
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+ if (fsp_len[1] < tlen)
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+ return DB_BUFFER_SMALL;
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+ else
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+ /* Count down the number of bytes left in argp. */
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+ fsp_len[1] -= tlen;
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+
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memcpy(tname, name, nlen);
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memcpy(tstruct, &mfp->stat, sizeof(mfp->stat));
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tstruct->file_name = tname;
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@@ -325,7 +369,9 @@
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tstruct->st_pagesize = mfp->pagesize;
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*(DB_MPOOL_FSTAT ***)argp = tfsp;
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- (*countp)--;
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+
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+ /* Count down the number of entries left in argp. */
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+ fsp_len[0]--;
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if (LF_ISSET(DB_STAT_CLEAR))
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memset(&mfp->stat, 0, sizeof(mfp->stat));
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diff -r -u db-5.3.21_orig/src/mp/mp_sync.c db-5.3.21/src/mp/mp_sync.c
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--- db-5.3.21_orig/src/mp/mp_sync.c 2012-05-12 01:57:53.000000000 +0800
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+++ db-5.3.21/src/mp/mp_sync.c 2015-05-19 15:08:05.000000000 +0800
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@@ -57,11 +57,13 @@
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if ((t_ret = func(env,
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mfp, arg, countp, flags)) != 0 && ret == 0)
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ret = t_ret;
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- if (ret != 0 && !LF_ISSET(DB_STAT_MEMP_NOERROR))
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+ if (ret != 0 &&
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+ (!LF_ISSET(DB_STAT_MEMP_NOERROR) || ret == DB_BUFFER_SMALL))
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break;
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}
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MUTEX_UNLOCK(env, hp->mtx_hash);
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- if (ret != 0 && !LF_ISSET(DB_STAT_MEMP_NOERROR))
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+ if (ret != 0 &&
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+ (!LF_ISSET(DB_STAT_MEMP_NOERROR) || ret == DB_BUFFER_SMALL))
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break;
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}
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return (ret);
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