diff options
Diffstat (limited to 'storage/bdb/os/os_stat.c')
-rw-r--r-- | storage/bdb/os/os_stat.c | 119 |
1 files changed, 119 insertions, 0 deletions
diff --git a/storage/bdb/os/os_stat.c b/storage/bdb/os/os_stat.c new file mode 100644 index 00000000000..c3510e36f5d --- /dev/null +++ b/storage/bdb/os/os_stat.c @@ -0,0 +1,119 @@ +/*- + * See the file LICENSE for redistribution information. + * + * Copyright (c) 1997-2002 + * Sleepycat Software. All rights reserved. + */ + +#include "db_config.h" + +#ifndef lint +static const char revid[] = "$Id: os_stat.c,v 11.20 2002/07/12 18:56:53 bostic Exp $"; +#endif /* not lint */ + +#ifndef NO_SYSTEM_INCLUDES +#include <sys/types.h> +#include <sys/stat.h> + +#include <string.h> +#endif + +#include "db_int.h" + +/* + * __os_exists -- + * Return if the file exists. + * + * PUBLIC: int __os_exists __P((const char *, int *)); + */ +int +__os_exists(path, isdirp) + const char *path; + int *isdirp; +{ + int ret; + struct stat sb; + + if (DB_GLOBAL(j_exists) != NULL) + return (DB_GLOBAL(j_exists)(path, isdirp)); + + do { + ret = +#ifdef HAVE_VXWORKS + stat((char *)path, &sb); +#else + stat(path, &sb); +#endif + if (ret != 0) + ret = __os_get_errno(); + } while (ret == EINTR); + + if (ret != 0) + return (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((DB_ENV *, const char *, + * PUBLIC: DB_FH *, u_int32_t *, u_int32_t *, u_int32_t *)); + */ +int +__os_ioinfo(dbenv, path, fhp, mbytesp, bytesp, iosizep) + DB_ENV *dbenv; + const char *path; + DB_FH *fhp; + u_int32_t *mbytesp, *bytesp, *iosizep; +{ + int ret; + struct stat sb; + + if (DB_GLOBAL(j_ioinfo) != NULL) + return (DB_GLOBAL(j_ioinfo)(path, + fhp->fd, mbytesp, bytesp, iosizep)); + +retry: + if (fstat(fhp->fd, &sb) == -1) { + if ((ret = __os_get_errno()) == EINTR) + goto retry; + __db_err(dbenv, "fstat: %s", strerror(ret)); + return (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 blocksize, 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); +} |