diff options
Diffstat (limited to 'lib/libc/db/recno/rec_open.c')
| -rw-r--r-- | lib/libc/db/recno/rec_open.c | 43 |
1 files changed, 27 insertions, 16 deletions
diff --git a/lib/libc/db/recno/rec_open.c b/lib/libc/db/recno/rec_open.c index 2a0f354..51d8a3c 100644 --- a/lib/libc/db/recno/rec_open.c +++ b/lib/libc/db/recno/rec_open.c @@ -1,5 +1,5 @@ /*- - * Copyright (c) 1990, 1993 + * Copyright (c) 1990, 1993, 1994 * The Regents of the University of California. All rights reserved. * * This code is derived from software contributed to Berkeley by @@ -35,7 +35,7 @@ */ #if defined(LIBC_SCCS) && !defined(lint) -static char sccsid[] = "@(#)rec_open.c 8.6 (Berkeley) 2/22/94"; +static char sccsid[] = "@(#)rec_open.c 8.10 (Berkeley) 9/1/94"; #endif /* LIBC_SCCS and not lint */ #include <sys/types.h> @@ -98,7 +98,7 @@ __rec_open(fname, flags, mode, openinfo, dflags) t = dbp->internal; if (openinfo) { if (openinfo->flags & R_FIXEDLEN) { - SET(t, R_FIXLEN); + F_SET(t, R_FIXLEN); t->bt_reclen = openinfo->reclen; if (t->bt_reclen == 0) goto einval; @@ -107,12 +107,11 @@ __rec_open(fname, flags, mode, openinfo, dflags) } else t->bt_bval = '\n'; - SET(t, R_RECNO); + F_SET(t, R_RECNO); if (fname == NULL) - SET(t, R_EOF | R_INMEM); + F_SET(t, R_EOF | R_INMEM); else t->bt_rfd = rfd; - t->bt_rcursor = 0; if (fname != NULL) { /* @@ -124,20 +123,20 @@ __rec_open(fname, flags, mode, openinfo, dflags) if (lseek(rfd, (off_t)0, SEEK_CUR) == -1 && errno == ESPIPE) { switch (flags & O_ACCMODE) { case O_RDONLY: - SET(t, R_RDONLY); + F_SET(t, R_RDONLY); break; default: goto einval; } slow: if ((t->bt_rfp = fdopen(rfd, "r")) == NULL) goto err; - SET(t, R_CLOSEFP); + F_SET(t, R_CLOSEFP); t->bt_irec = - ISSET(t, R_FIXLEN) ? __rec_fpipe : __rec_vpipe; + F_ISSET(t, R_FIXLEN) ? __rec_fpipe : __rec_vpipe; } else { switch (flags & O_ACCMODE) { case O_RDONLY: - SET(t, R_RDONLY); + F_SET(t, R_RDONLY); break; case O_RDWR: break; @@ -157,8 +156,16 @@ slow: if ((t->bt_rfp = fdopen(rfd, "r")) == NULL) * fails if the file is too large. */ if (sb.st_size == 0) - SET(t, R_EOF); + F_SET(t, R_EOF); else { +#ifdef MMAP_NOT_AVAILABLE + /* + * XXX + * Mmap doesn't work correctly on many current + * systems. In particular, it can fail subtly, + * with cache coherency problems. Don't use it + * for now. + */ t->bt_msize = sb.st_size; if ((t->bt_smap = mmap(NULL, t->bt_msize, PROT_READ, MAP_PRIVATE, rfd, @@ -166,9 +173,12 @@ slow: if ((t->bt_rfp = fdopen(rfd, "r")) == NULL) goto slow; t->bt_cmap = t->bt_smap; t->bt_emap = t->bt_smap + sb.st_size; - t->bt_irec = ISSET(t, R_FIXLEN) ? + t->bt_irec = F_ISSET(t, R_FIXLEN) ? __rec_fmap : __rec_vmap; - SET(t, R_MEMMAPPED); + F_SET(t, R_MEMMAPPED); +#else + goto slow; +#endif } } } @@ -186,13 +196,14 @@ slow: if ((t->bt_rfp = fdopen(rfd, "r")) == NULL) if ((h = mpool_get(t->bt_mp, P_ROOT, 0)) == NULL) goto err; if ((h->flags & P_TYPE) == P_BLEAF) { - h->flags = h->flags & ~P_TYPE | P_RLEAF; + F_CLR(h, P_TYPE); + F_SET(h, P_RLEAF); mpool_put(t->bt_mp, h, MPOOL_DIRTY); } else mpool_put(t->bt_mp, h, 0); if (openinfo && openinfo->flags & R_SNAPSHOT && - !ISSET(t, R_EOF | R_INMEM) && + !F_ISSET(t, R_EOF | R_INMEM) && t->bt_irec(t, MAX_REC_NUMBER) == RET_ERROR) goto err; return (dbp); @@ -222,7 +233,7 @@ __rec_fd(dbp) } /* In-memory database can't have a file descriptor. */ - if (ISSET(t, R_INMEM)) { + if (F_ISSET(t, R_INMEM)) { errno = ENOENT; return (-1); } |
