summaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
Diffstat
-rw-r--r--src/H5F.c39
-rw-r--r--src/H5FD.c57
-rw-r--r--src/H5FDprivate.h1
-rw-r--r--src/H5FDpublic.h1
-rw-r--r--src/H5Fprivate.h1
-rw-r--r--src/H5G.c12
6 files changed, 106 insertions, 5 deletions
diff --git a/src/H5F.c b/src/H5F.c
index 199807c..71b009a 100644
--- a/src/H5F.c
+++ b/src/H5F.c
@@ -3222,7 +3222,7 @@ H5F_sizeof_size(const H5F_t *f)
/*-------------------------------------------------------------------------
- * Function: H5F_get_intent
+ * Function: H5F_get_driver_id
*
* Purpose: Quick and dirty routine to retrieve the file's 'driver_id' value
* (Mainly added to stop non-file routines from poking about in the
@@ -3251,6 +3251,43 @@ H5F_get_driver_id(const H5F_t *f)
/*-------------------------------------------------------------------------
+ * Function: H5F_get_fileno
+ *
+ * Purpose: Quick and dirty routine to retrieve the file's 'fileno' value
+ * (Mainly added to stop non-file routines from poking about in the
+ * H5F_t data structure)
+ *
+ * Return: Non-negative on success/Negative on failure
+ *
+ * Programmer: Quincey Koziol <koziol@ncsa.uiuc.edu>
+ * March 27, 2002
+ *
+ * Modifications:
+ *
+ *-------------------------------------------------------------------------
+ */
+herr_t
+H5F_get_fileno(const H5F_t *f, unsigned long *filenum)
+{
+ herr_t ret_value = SUCCEED;
+
+ FUNC_ENTER(H5F_get_fileno, FAIL);
+
+ assert(f);
+ assert(f->shared);
+ assert(f->shared->lf);
+ assert(filenum);
+
+ /* Retrieve the file's serial number */
+ if(H5FD_get_fileno(f->shared->lf,filenum)<0)
+ HRETURN_ERROR(H5E_FILE, H5E_BADRANGE, FAIL, "can't retrieve fileno");
+
+done:
+ FUNC_LEAVE(ret_value);
+} /* end H5F_get_fileno() */
+
+
+/*-------------------------------------------------------------------------
* Function: H5F_block_read
*
* Purpose: Reads some data from a file/server/etc into a buffer.
diff --git a/src/H5FD.c b/src/H5FD.c
index 02a87d2..8f33140 100644
--- a/src/H5FD.c
+++ b/src/H5FD.c
@@ -38,6 +38,20 @@ static haddr_t H5FD_real_alloc(H5FD_t *file, H5FD_mem_t type, hsize_t size);
/* Declare a PQ free list to manage the metadata accumulator buffer */
H5FL_BLK_DEFINE_STATIC(meta_accum);
+/* Static local variables */
+
+/* Global count of the number of H5FD_t's handed out. This is used as a
+ * "serial number" for files that are currently open and is used for the
+ * 'fileno[2]' field in H5G_stat_t. However, if a VFL driver is not able
+ * to detect whether two files are the same, a file that has been opened
+ * by H5Fopen more than once with that VFL driver will have two different
+ * serial numbers. :-/
+ *
+ * Also, if a file is opened, the 'fileno[2]' field is retrieved for an
+ * object and the file is closed and re-opened, the 'fileno[2]' value will
+ * be different.
+ */
+static unsigned long file_serial_no[2];
/*-------------------------------------------------------------------------
* Function: H5FD_init_interface
@@ -66,6 +80,9 @@ H5FD_init_interface(void)
"unable to initialize interface");
}
+ /* Reset the file serial numbers */
+ HDmemset(file_serial_no,0,sizeof(file_serial_no));
+
FUNC_LEAVE(SUCCEED);
}
@@ -801,6 +818,14 @@ H5FD_open(const char *name, unsigned flags, hid_t fapl_id, haddr_t maxaddr)
if (H5FD_query(file, &(file->feature_flags))<0)
HRETURN_ERROR(H5E_VFL, H5E_CANTINIT, NULL, "unable to query file driver");
+ /* Increment the global serial number & assign it to this H5FD_t object */
+ if(++file_serial_no[0]==0) {
+ /* (Just error out if we wrap both numbers around for now...) */
+ if(++file_serial_no[1]==0)
+ HRETURN_ERROR(H5E_VFL, H5E_CANTINIT, NULL, "unable to get file serial number");
+ } /* end if */
+ HDmemcpy(file->fileno,file_serial_no,sizeof(file_serial_no));
+
FUNC_LEAVE(file);
}
@@ -2509,3 +2534,35 @@ H5FD_flush(H5FD_t *file)
FUNC_LEAVE(SUCCEED);
}
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5FD_get_fileno
+ *
+ * Purpose: Quick and dirty routine to retrieve the file's 'fileno' value
+ * (Mainly added to stop non-file routines from poking about in the
+ * H5FD_t data structure)
+ *
+ * Return: Non-negative on success/Negative on failure
+ *
+ * Programmer: Quincey Koziol <koziol@ncsa.uiuc.edu>
+ * March 27, 2002
+ *
+ * Modifications:
+ *
+ *-------------------------------------------------------------------------
+ */
+herr_t
+H5FD_get_fileno(const H5FD_t *file, unsigned long *filenum)
+{
+ FUNC_ENTER(H5FD_get_fileno, FAIL);
+
+ assert(file);
+ assert(filenum);
+
+ /* Retrieve the file's serial number */
+ HDmemcpy(filenum,file->fileno,sizeof(file->fileno));
+
+ FUNC_LEAVE(SUCCEED);
+} /* end H5F_get_fileno() */
+
diff --git a/src/H5FDprivate.h b/src/H5FDprivate.h
index bd633d0..6e0c919 100644
--- a/src/H5FDprivate.h
+++ b/src/H5FDprivate.h
@@ -39,5 +39,6 @@ __DLL__ herr_t H5FD_read(H5FD_t *file, H5FD_mem_t type, hid_t dxpl_id, haddr_t a
__DLL__ herr_t H5FD_write(H5FD_t *file, H5FD_mem_t type, hid_t dxpl_id, haddr_t addr, size_t size,
const void *buf);
__DLL__ herr_t H5FD_flush(H5FD_t *file);
+__DLL__ herr_t H5FD_get_fileno(const H5FD_t *file, unsigned long *filenum);
#endif /* !_H5FDprivate_H */
diff --git a/src/H5FDpublic.h b/src/H5FDpublic.h
index d288307..81a63f5 100644
--- a/src/H5FDpublic.h
+++ b/src/H5FDpublic.h
@@ -153,6 +153,7 @@ typedef struct H5FD_free_t {
struct H5FD_t {
hid_t driver_id; /*driver ID for this file*/
const H5FD_class_t *cls; /*constant class info */
+ unsigned long fileno[2]; /* File serial number */
unsigned long feature_flags; /* VFL Driver feature Flags */
hsize_t threshold; /* Threshold for alignment */
diff --git a/src/H5Fprivate.h b/src/H5Fprivate.h
index 2b43757..8a77e7a 100644
--- a/src/H5Fprivate.h
+++ b/src/H5Fprivate.h
@@ -331,6 +331,7 @@ struct H5S_t;
__DLL__ herr_t H5F_init(void);
__DLL__ unsigned H5F_get_intent(const H5F_t *f);
__DLL__ hid_t H5F_get_driver_id(const H5F_t *f);
+__DLL__ herr_t H5F_get_fileno(const H5F_t *f, unsigned long *filenum);
/* Functions that operate on array storage */
__DLL__ herr_t H5F_arr_create(H5F_t *f,
diff --git a/src/H5G.c b/src/H5G.c
index 16476e8..2331ce4 100644
--- a/src/H5G.c
+++ b/src/H5G.c
@@ -2044,7 +2044,7 @@ H5G_get_objinfo (H5G_entry_t *loc, const char *name, hbool_t follow_link,
if (H5G_CACHED_SLINK==obj_ent.type) {
/* Named object is a symbolic link */
if (NULL==H5O_read (&grp_ent, H5O_STAB, 0, &stab_mesg) ||
- NULL==(s=H5HL_peek (grp_ent.file, stab_mesg.heap_addr,
+ NULL==(s=H5HL_peek (grp_ent.file, stab_mesg.heap_addr,
obj_ent.cache.slink.lval_offset))) {
HRETURN_ERROR (H5E_SYM, H5E_CANTINIT, FAIL,
"unable to read symbolic link value");
@@ -2069,11 +2069,15 @@ H5G_get_objinfo (H5G_entry_t *loc, const char *name, hbool_t follow_link,
if (NULL==H5O_read(&obj_ent, H5O_MTIME, 0, &(statbuf->mtime))) {
H5E_clear();
statbuf->mtime = 0;
- }
+ } /* end if */
statbuf->type = H5G_get_type(&obj_ent);
H5E_clear(); /*clear errors resulting from checking type*/
- }
- }
+ } /* end else */
+
+ /* Common code to retrieve the file's fileno */
+ if(H5F_get_fileno(obj_ent.file,statbuf->fileno)<0)
+ HRETURN_ERROR (H5E_FILE, H5E_BADVALUE, FAIL, "unable to read fileno");
+ } /* end if */
FUNC_LEAVE (SUCCEED);
}
generated by cgit v0.12 at 2024-09-18 07:29:08 (GMT)