1 files changed, 107 insertions, 0 deletions
diff --git a/os/os_stat.c b/os/os_stat.c
new file mode 100644
index 0000000..1c3b44a
--- /dev/null
+++ b/os/os_stat.c
@@ -0,0 +1,107 @@
+/*-
+ * See the file LICENSE for redistribution information.
+ *
+ * Copyright (c) 1997-2009 Oracle.  All rights reserved.
+ *
+ * $Id$
+ */
+
+#include "db_config.h"
+
+#include "db_int.h"
+
+/*
+ * __os_exists --
+ *	Return if the file exists.
+ *
+ * PUBLIC: int __os_exists __P((ENV *, const char *, int *));
+ */
+int
+__os_exists(env, path, isdirp)
+	ENV *env;
+	const char *path;
+	int *isdirp;
+{
+	DB_ENV *dbenv;
+	struct stat sb;
+	int ret;
+
+	dbenv = env == NULL ? NULL : env->dbenv;
+
+	if (dbenv != NULL &&
+	    FLD_ISSET(dbenv->verbose, DB_VERB_FILEOPS | DB_VERB_FILEOPS_ALL))
+		__db_msg(env, "fileops: stat %s", path);
+
+	if (DB_GLOBAL(j_exists) != NULL)
+		return (DB_GLOBAL(j_exists)(path, isdirp));
+
+	RETRY_CHK((stat(CHAR_STAR_CAST path, &sb)), ret);
+	if (ret != 0)
+		return (__os_posix_err(ret));
+
+#if !defined(S_ISDIR) || defined(STAT_MACROS_BROKEN)
+#undef	S_ISDIR
+#ifdef _S_IFDIR
+#define	S_ISDIR(m)	(_S_IFDIR & (m))
+#else
+#define	S_ISDIR(m)	(((m) & 0170000) == 0040000)
+#endif
+#endif
+	if (isdirp != NULL)
+		*isdirp = S_ISDIR(sb.st_mode);
+
+	return (0);
+}
+
+/*
+ * __os_ioinfo --
+ *	Return file size and I/O size; abstracted to make it easier
+ *	to replace.
+ *
+ * PUBLIC: int __os_ioinfo __P((ENV *, const char *,
+ * PUBLIC:    DB_FH *, u_int32_t *, u_int32_t *, u_int32_t *));
+ */
+int
+__os_ioinfo(env, path, fhp, mbytesp, bytesp, iosizep)
+	ENV *env;
+	const char *path;
+	DB_FH *fhp;
+	u_int32_t *mbytesp, *bytesp, *iosizep;
+{
+	struct stat sb;
+	int ret;
+
+	if (DB_GLOBAL(j_ioinfo) != NULL)
+		return (DB_GLOBAL(j_ioinfo)(path,
+		    fhp->fd, mbytesp, bytesp, iosizep));
+
+	DB_ASSERT(env, F_ISSET(fhp, DB_FH_OPENED) && fhp->fd != -1);
+
+	RETRY_CHK((fstat(fhp->fd, &sb)), ret);
+	if (ret != 0) {
+		__db_syserr(env, ret, "fstat");
+		return (__os_posix_err(ret));
+	}
+
+	/* Return the size of the file. */
+	if (mbytesp != NULL)
+		*mbytesp = (u_int32_t)(sb.st_size / MEGABYTE);
+	if (bytesp != NULL)
+		*bytesp = (u_int32_t)(sb.st_size % MEGABYTE);
+
+	/*
+	 * Return the underlying filesystem I/O size, if available.
+	 *
+	 * XXX
+	 * Check for a 0 size -- the HP MPE/iX architecture has st_blksize,
+	 * but it's always 0.
+	 */
+#ifdef HAVE_STRUCT_STAT_ST_BLKSIZE
+	if (iosizep != NULL && (*iosizep = sb.st_blksize) == 0)
+		*iosizep = DB_DEF_IOSIZE;
+#else
+	if (iosizep != NULL)
+		*iosizep = DB_DEF_IOSIZE;
+#endif
+	return (0);
+}