diff options
Diffstat (limited to 'debian/htdig/htdig-3.2.0b6/db/os_handle.c')
-rw-r--r-- | debian/htdig/htdig-3.2.0b6/db/os_handle.c | 118 |
1 files changed, 118 insertions, 0 deletions
diff --git a/debian/htdig/htdig-3.2.0b6/db/os_handle.c b/debian/htdig/htdig-3.2.0b6/db/os_handle.c new file mode 100644 index 00000000..5404fd27 --- /dev/null +++ b/debian/htdig/htdig-3.2.0b6/db/os_handle.c @@ -0,0 +1,118 @@ +/*- + * See the file LICENSE for redistribution information. + * + * Copyright (c) 1998, 1999 + * Sleepycat Software. All rights reserved. + */ + +#include "db_config.h" + +#ifndef lint +static const char sccsid[] = "@(#)os_handle.c 11.2 (Sleepycat) 11/12/99"; +#endif /* not lint */ + +#ifndef NO_SYSTEM_INCLUDES +#include <sys/types.h> + +#include <errno.h> +#include <fcntl.h> +#include <string.h> + +#ifndef _MSC_VER /* _WIN32 */ +#include <unistd.h> +#endif + +#endif + +#include "db_int.h" +#include "os_jump.h" + +/* + * CDB___os_openhandle -- + * Open a file, using POSIX 1003.1 open flags. + * + * PUBLIC: int CDB___os_openhandle __P((const char *, int, int, DB_FH *)); + */ +int +CDB___os_openhandle(name, flags, mode, fhp) + const char *name; + int flags, mode; + DB_FH *fhp; +{ + int ret, try; + + memset(fhp, 0, sizeof(*fhp)); + + for (ret = 0, try = 1; try < 4; ++try) { + /* + * !!! + * Open with full sharing on VMS. + * + * We use these flags because they are the ones set by the VMS + * CRTL mmap() call when it opens a file, and we have to be + * able to open files that mmap() has previously opened, e.g., + * when we're joining already existing DB regions. + */ + +#ifdef _MSC_VER /* _WIN32 */ + /* THIS IS A HACK TO REINSTATE BINARY MODE! FIX ME.. FIND THE PROBLEM*/ + mode |= _O_BINARY; +#endif + + fhp->fd = CDB___db_jump.j_open != NULL ? + CDB___db_jump.j_open(name, flags, mode) : +#ifdef __VMS + open(name, flags, mode, "shr=get,put,upd,del,upi"); +#else + open(name, flags, mode); +#endif + + /* DEBUGGING */ + /* printf("\n[CDB___os_openhandle] name=[%s] mode=[%#x] fhp->fd=[%d]\n", name, mode, fhp->fd); */ + + if (fhp->fd == -1) { + /* + * If it's a "temporary" error, we retry up to 3 times, + * waiting up to 12 seconds. While it's not a problem + * if we can't open a database, an inability to open a + * log file is cause for serious dismay. + */ + ret = CDB___os_get_errno(); + if (ret == ENFILE || ret == EMFILE || ret == ENOSPC) { + (void)CDB___os_sleep(try * 2, 0); + continue; + } + } else + F_SET(fhp, DB_FH_VALID); + break; + } + return (ret); +} + +/* + * CDB___os_closehandle -- + * Close a file. + * + * PUBLIC: int CDB___os_closehandle __P((DB_FH *)); + */ +int +CDB___os_closehandle(fhp) + DB_FH *fhp; +{ + int ret; + + /* Don't close file descriptors that were never opened. */ + DB_ASSERT(F_ISSET(fhp, DB_FH_VALID) && fhp->fd != -1); + + ret = CDB___db_jump.j_close != NULL ? + CDB___db_jump.j_close(fhp->fd) : close(fhp->fd); + + /* + * Smash the POSIX file descriptor -- it's never tested, but we want + * to catch any mistakes. + */ + fhp->fd = -1; + F_CLR(fhp, DB_FH_VALID); + + return (ret == 0 ? 0 : CDB___os_get_errno()); +} |