diff options
author | Ulrich Drepper <drepper@redhat.com> | 1998-01-25 17:01:47 +0000 |
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committer | Ulrich Drepper <drepper@redhat.com> | 1998-01-25 17:01:47 +0000 |
commit | af69217fea009d28a9dca78796147a05d3cffb01 (patch) | |
tree | 98fd27434ad1ae66768530dd28b8bde5721e6c5f /db2/common/db_region.c | |
parent | ac9f45cfd18eeffd6a9fbbcc86e68657c95658a6 (diff) | |
download | glibc-af69217fea009d28a9dca78796147a05d3cffb01.tar.gz glibc-af69217fea009d28a9dca78796147a05d3cffb01.tar.xz glibc-af69217fea009d28a9dca78796147a05d3cffb01.zip |
Update.
1998-01-26 00:57 Ulrich Drepper <drepper@cygnus.com> * db2/Makefile (routines): Add os_alloc. * db2/db.h: Update from db-2.3.16. * db2/db_185.h: Likewise. * db2/db_int.h: Likewise. * db2/btree/bt_close.c: Likewise. * db2/btree/bt_cursor.c: Likewise. * db2/btree/bt_delete.c: Likewise. * db2/btree/bt_open.c: Likewise. * db2/btree/bt_page.c: Likewise. * db2/btree/bt_put.c: Likewise. * db2/btree/bt_rec.c: Likewise. * db2/btree/bt_recno.c: Likewise. * db2/btree/btree_auto.c: Likewise. * db2/common/db_appinit.c: Likewise. * db2/common/db_apprec.c: Likewise. * db2/common/db_err.c: Likewise. * db2/common/db_region.c: Likewise. * db2/common/db_shash.c: Likewise. * db2/db/db.c: Likewise. * db2/db/db_auto.c: Likewise. * db2/db/db_conv.c: Likewise. * db2/db/db_dispatch.c: Likewise. * db2/db/db_dup.c: Likewise. * db2/db/db_pr.c: Likewise. * db2/db/db_rec.c: Likewise. * db2/db185/db185.c: Likewise. * db2/dbm/dbm.c: Likewise. * db2/hash/hash.c: Likewise. * db2/hash/hash_auto.c: Likewise. * db2/hash/hash_dup.c: Likewise. * db2/hash/hash_page.c: Likewise. * db2/hash/hash_rec.c: Likewise. * db2/include/btree_ext.h: Likewise. * db2/include/clib_ext.h: Likewise. * db2/include/common_ext.h: Likewise. * db2/include/db.h.src: Likewise. * db2/include/db_185.h.src: Likewise. * db2/include/db_am.h: Likewise. * db2/include/db_ext.h: Likewise. * db2/include/db_int.h.src: Likewise. * db2/include/hash_ext.h: Likewise. * db2/include/lock_ext.h: Likewise. * db2/include/log.h: Likewise. * db2/include/log_auto.h: Likewise. * db2/include/log_ext.h: Likewise. * db2/include/mp.h: Likewise. * db2/include/mp_ext.h: Likewise. * db2/include/mutex_ext.h: Likewise. * db2/include/os_ext.h: Likewise. * db2/include/os_func.h: Likewise. * db2/include/txn_ext.h: Likewise. * db2/lock/lock.c: Likewise. * db2/lock/lock_util.c: Likewise. * db2/log/log.c: Likewise. * db2/log/log.src: Likewise. * db2/log/log_archive.c: Likewise. * db2/log/log_auto.c: Likewise. * db2/log/log_get.c: Likewise. * db2/log/log_put.c: Likewise. * db2/log/log_rec.c: Likewise. * db2/log/log_register.c: Likewise. * db2/mp/mp_bh.c: Likewise. * db2/mp/mp_fget.c: Likewise. * db2/mp/mp_fopen.c: Likewise. * db2/mp/mp_fput.c: Likewise. * db2/mp/mp_pr.c: Likewise. * db2/mp/mp_sync.c: Likewise. * db2/mutex/mutex.c: Likewise. * db2/os/os_alloc.c: Likewise. * db2/os/os_config.c: Likewise. * db2/os/os_stat.c: Likewise. * db2/progs/db_checkpoint/db_checkpoint.c: Likewise. * db2/progs/db_deadlock/db_deadlock.c: Likewise. * db2/progs/db_load/db_load.c: Likewise. * db2/progs/db_printlog/db_printlog.c: Likewise. * db2/progs/db_recover/db_recover.c: Likewise. * db2/progs/db_stat/db_stat.c: Likewise. * db2/txn/txn.c: Likewise. * elf/dl-close.c (_dl_close): Rename inner variable named map to imap. Unmap memory blocks in reverse order of allocation. Call munmap with load address added to offset. Bug reported by Miguel de Icaza. * locale/programs/ld-collate.c (collate_end_weight): Correctly fill up weight array. * localedata/locales/cs_CZ: Update by Michael Mraka <michael@informatics.muni.cz>. * misc/sys/syslog.h: Reformat a bit. Don't declare vsyslog unless __USE_BSD. * nis/nss_compat/compat-grp.c: Correctly handle buffer overflow while reading line with fgets. * nis/nss_compat/compat-pwd.c: Likewise. * nis/nss_compat/compat-spwd.c: Likewise. * nss/nss_files/files-XXX.c: Likewise. * nss/nss_files/files-alias.c: Likewise. * shadow/fgetspent_r.c: Likewise. * string/strerror_r.c: Correct comment. Patch by Andreas Jaeger. * sysdeps/unix/sysv/linux/bits/stat.h: Define _STATBUF_ST_RDEV. * sysdeps/unix/sysv/linux/alpha/bits/stat.h: Likewise. * sysdeps/unix/sysv/linux/mips/bits/stat.h: Likewise. * sysdeps/unix/sysv/linux/i386/sys/ucontext.h: Allocate room for FP register content in ucontext_t. 1998-01-22 Andreas Jaeger <aj@arthur.rhein-neckar.de> * sysdeps/libm-ieee754/s_modfl.c (modf): Correct calculation. Patch by Markus Schoder <Markus.Schoder@dresdner-bank.de>. * math/libm-test.c (modf_test): Add more tests for modf. * sysdeps/unix/sysv/linux/sys/mman.h: Add const to mlock and munlock according to Unix98. 1998-01-25 Andreas Jaeger <aj@arthur.rhein-neckar.de> * nss/nss_files/files-network.c (LINE_PARSER): Set n_addrtype to AF_INET. 1998-01-21 07:22 H.J. Lu <hjl@gnu.org> * sysdeps/posix/ttyname.c: Handle symbolic links. * sysdeps/posix/ttyname_r.c: Ditto. 1998-01-25 19:39 Ulrich Drepper <drepper@cygnus.com> * db2/makedb.c (process_input): Write terminating \0 for value. (print_database): Simply print value string, don't use length. 1998-01-24 Andreas Jaeger <aj@arthur.rhein-neckar.de> * nss/nsswitch.c (__nss_configure_lookup): Correct test for early exit of loop. 1998-01-25 Thorsten Kukuk <kukuk@vt.uni-paderborn.de> * nis/ypclnt.c: Don't set dom_client to NULL, or we will not close all sockets. 1998-01-25 14:54 Ulrich Drepper <drepper@cygnus.com> * signal/Makefile (routines): Add sighold, sigrelse, sigignore, and sigset. * signal/sighold.c: New file. * signal/sigrelse.c: New file. * sysdeps/generic/sigignore.c: New file. * sysdeps/generic/sigset.c: New file. * sysdeps/posix/sigignore.c: New file. * sysdeps/posix/sigset.c: New file. * signal/signal.h: Add prototypes for new functions. * sysdeps/unix/sysv/linux/alpha/bits/signum.h: Define SIG_HOLD. * sysdeps/unix/sysv/linux/bits/signum.h: Likewise. * sysdeps/unix/sysv/linux/mips/bits/signum.h: Likewise. * sysdeps/unix/sysv/linux/sparc/bits/signum.h: Likewise. 1998-01-23 00:16 Tim Waugh <tim@cyberelk.demon.co.uk> * posix/wordexp.c: Added IFS field-splitting in parameter and command substitution. Fixed an IFS-related bug that caused an infinite loop. 1998-01-25 12:38 Ulrich Drepper <drepper@cygnus.com> * stdlib/Makefile (routines): Add getcontext, setcontext, makecontext, and swapcontext. * stdlib/ucontext.h: Correct prototypes. * sysdeps/generic/getcontext.c: New file. * sysdeps/generic/setcontext.c: New file. * sysdeps/generic/makecontext.c: New file. * sysdeps/generic/swapcontext.c: New file. * sysdeps/unix/sysv/linux/sparc/sparc64/Makefile: Removed. 1998-01-25 04:07 Ulrich Drepper <drepper@cygnus.com> * resource/sys/resource.h: Remove #include of ulimit.h which is not allowed by SUSv2 and not available on other systems. * sysdeps/unix/sysv/linux/ulimit.c: Include ulimit.h. * streams/Makefile: New file. * streams/stropts.h: New file. * sysdeps/generic/bits/stropts.h: New file. * sysdeps/generic/isastream.c: New file. * sysdeps/generic/getmsg.c: New file. * sysdeps/generic/getpmsg.c: New file. * sysdeps/generic/putmsg.c: New file. * sysdeps/generic/putpmsg.c: New file. * sysdeps/generic/fattach.c: New file. * sysdeps/generic/fdetach.c: New file. * sysdeps/unix/inet/Subdirs: Add streams. * sysdeps/generic/bits/types.h: Add definition of __t_scalar_t and __t_uscalar_t. * sysdeps/unix/sysv/linux/bits/types.h: Likewise. * sysdeps/unix/sysv/linux/alpha/bits/types.h: Likewise. * sysdeps/unix/sysv/linux/mips/bits/types.h: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc64/bits/types.h: Likewise. * sysdeps/mach/_strerror.c: Follow changes of generic version to handle small buffers correctly. 1998-01-24 17:31 H.J. Lu <hjl@gnu.org> * sysdeps/alpha/dl-machine.h (ELF_MACHINE_RUNTIME_TRAMPOLINE): Remove the 3rd arg and add declaration for _dl_runtime_resolve and _dl_runtime_profile. 1998-01-25 02:42 Ulrich Drepper <drepper@cygnus.com> * include/cpio.h: New file. Mainly copied from GNU cpio. * posix/Makefile (headers): Add cpio.h.
Diffstat (limited to 'db2/common/db_region.c')
-rw-r--r-- | db2/common/db_region.c | 77 |
1 files changed, 47 insertions, 30 deletions
diff --git a/db2/common/db_region.c b/db2/common/db_region.c index 4fc603a2b0..02d939e3e6 100644 --- a/db2/common/db_region.c +++ b/db2/common/db_region.c @@ -43,7 +43,7 @@ #include "config.h" #ifndef lint -static const char sccsid[] = "@(#)db_region.c 10.18 (Sleepycat) 11/28/97"; +static const char sccsid[] = "@(#)db_region.c 10.21 (Sleepycat) 1/16/98"; #endif /* not lint */ #ifndef NO_SYSTEM_INCLUDES @@ -168,6 +168,8 @@ __db_rinit(dbenv, rp, fd, size, lock_region) { int ret; + COMPQUIET(dbenv, NULL); + /* * Initialize the common information. * @@ -190,6 +192,12 @@ __db_rinit(dbenv, rp, fd, size, lock_region) * been initialized in which case an attempt to get it could lead to * random behavior. If the version number isn't there (the file size * is too small) or it's 0, we know that the region is being created. + * + * We also make sure to check the return of __db_mutex_lock() here, + * even though we don't usually check elsewhere. This is the first + * lock we attempt to acquire, and if it fails we have to know. (It + * can fail -- SunOS, using fcntl(2) for locking, with an in-memory + * filesystem specified as the database home.) */ __db_mutex_init(&rp->lock, MUTEX_LOCK_OFFSET(rp, &rp->lock)); if (lock_region && (ret = __db_mutex_lock(&rp->lock, fd)) != 0) @@ -219,7 +227,8 @@ __db_ropen(dbenv, appname, path, file, flags, fdp, retp) void *retp; { RLAYOUT *rp; - off_t size1, size2; + size_t size; + u_int32_t mbytes, bytes; int fd, ret; char *name; @@ -251,19 +260,20 @@ __db_ropen(dbenv, appname, path, file, flags, fdp, retp) * flatly impossible. Hope that mmap fails if the file is too large. * */ - if ((ret = __db_ioinfo(name, fd, &size1, NULL)) != 0) { + if ((ret = __db_ioinfo(name, fd, &mbytes, &bytes, NULL)) != 0) { __db_err(dbenv, "%s: %s", name, strerror(ret)); goto err2; } + size = mbytes * MEGABYTE + bytes; /* Check to make sure the first block has been written. */ - if ((size_t)size1 < sizeof(RLAYOUT)) { + if (size < sizeof(RLAYOUT)) { ret = EAGAIN; goto err2; } /* Map in whatever is there. */ - if ((ret = __db_rmap(dbenv, fd, size1, &rp)) != 0) + if ((ret = __db_rmap(dbenv, fd, size, &rp)) != 0) goto err2; /* @@ -284,11 +294,11 @@ __db_ropen(dbenv, appname, path, file, flags, fdp, retp) * getting the size of the file and checking the major version. Check * to make sure we got the entire file. */ - if ((ret = __db_ioinfo(name, fd, &size2, NULL)) != 0) { + if ((ret = __db_ioinfo(name, fd, &mbytes, &bytes, NULL)) != 0) { __db_err(dbenv, "%s: %s", name, strerror(ret)); goto err1; } - if (size1 != size2) { + if (size != mbytes * MEGABYTE + bytes) { ret = EAGAIN; goto err1; } @@ -490,11 +500,9 @@ __db_rgrow(dbenv, fd, incr) int fd; size_t incr; { -#ifdef MMAP_INIT_NEEDED size_t i; -#endif ssize_t nw; - int ret; + int mmap_init_needed, ret; char buf[__DB_VMPAGESIZE]; /* Seek to the end of the region. */ @@ -506,33 +514,42 @@ __db_rgrow(dbenv, fd, incr) /* * Historically, some systems required that all of the bytes of the - * region be written before you could mmap it and access it randomly. + * region be written before it could be mmapped and accessed randomly. + * + * Windows/95 doesn't have that problem, but it leaves file contents + * uninitialized. Win/NT apparently initializes them. */ #ifdef MMAP_INIT_NEEDED - /* Extend the region by writing each new page. */ - for (i = 0; i < incr; i += __DB_VMPAGESIZE) { + mmap_init_needed = 1; +#else + mmap_init_needed = __os_oldwin(); +#endif + if (mmap_init_needed) + /* Extend the region by writing each new page. */ + for (i = 0; i < incr; i += __DB_VMPAGESIZE) { + if ((ret = __db_write(fd, buf, sizeof(buf), &nw)) != 0) + goto err; + if (nw != sizeof(buf)) + goto eio; + } + else { + /* + * Extend the region by writing the last page. + * + * Round off the increment to the next page boundary. + */ + incr += __DB_VMPAGESIZE - 1; + incr -= incr % __DB_VMPAGESIZE; + + /* Write the last page, not the page after the last. */ + if ((ret = + __db_seek(fd, 0, 0, incr - __DB_VMPAGESIZE, SEEK_CUR)) != 0) + goto err; if ((ret = __db_write(fd, buf, sizeof(buf), &nw)) != 0) goto err; if (nw != sizeof(buf)) goto eio; } -#else - /* - * Extend the region by writing the last page. - * - * Round off the increment to the next page boundary. - */ - incr += __DB_VMPAGESIZE - 1; - incr -= incr % __DB_VMPAGESIZE; - - /* Write the last page, not the page after the last. */ - if ((ret = __db_seek(fd, 0, 0, incr - __DB_VMPAGESIZE, SEEK_CUR)) != 0) - goto err; - if ((ret = __db_write(fd, buf, sizeof(buf), &nw)) != 0) - goto err; - if (nw != sizeof(buf)) - goto eio; -#endif return (0); eio: ret = EIO; |