diff options
Diffstat (limited to 'usr.bin/cvs/repo.h')
| -rw-r--r-- | usr.bin/cvs/repo.h | 155 |
1 files changed, 0 insertions, 155 deletions
diff --git a/usr.bin/cvs/repo.h b/usr.bin/cvs/repo.h deleted file mode 100644 index 3b92b8af949..00000000000 --- a/usr.bin/cvs/repo.h +++ /dev/null @@ -1,155 +0,0 @@ -/* $OpenBSD: repo.h,v 1.3 2005/08/08 11:47:53 xsa Exp $ */ -/* - * Copyright (c) 2005 Jean-Francois Brousseau <jfb@openbsd.org> - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. The name of the author may not be used to endorse or promote products - * derived from this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, - * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY - * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL - * THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, - * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, - * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; - * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, - * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR - * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF - * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - */ - -#ifndef REPO_H -#define REPO_H - -#include <sys/types.h> -#include <sys/queue.h> - - -#define CVS_MODULE_ISALIAS 0x01 - -typedef struct cvs_module { - char *cm_name; - int cm_flags; - char *cm_path; /* subpath for aliases, NULL otherwise */ - - TAILQ_ENTRY(cvs_module) cm_link; -} CVSMODULE; - - - -#define CVS_RPENT_UNKNOWN 0 -#define CVS_RPENT_DIR 1 -#define CVS_RPENT_RCSFILE 2 - -typedef struct cvs_repoent CVSRPENT; - -/* - * Repository locks - * ================ - * - * OpenCVS derives from the standard CVS mechanism in the way it manages locks - * on the repository. GNU CVS uses files with 'rfl' and 'wfl' extensions for - * read and write locks on particular directories. - * Using the filesystem for locking semantics has one major drawback: a lock - * can stay even after the process that created it is gone, if it didn't - * perform the appropriate cleanup. This stale lock problem has been known - * to happen with GNU CVS and an intervention from one of the repository - * administrators is required before anyone else can access parts of the - * repository. - * In OpenCVS, a child cvsd needing to access a particular part of the tree - * must first request a lock on that part of the tree by issuing a - * CVS_MSG_LOCK message with the appropriate path. Although the code - * supports locking at the file level, it should only be applied to the - * directory level to avoid extra overhead. Both read and write locks can be - * obtained, though with different behaviour. Multiple simultaneous read locks - * can be obtained on the same entry, but there can only be one active write - * lock. In the case where the directory - * is already locked by another child, a lock wait is added to that entry - * and the child requesting the lock will get a CVSD_MSG_LOCKPEND reply, - * meaning that the lock has not been obtained but the child should block - * until it receives a CVSD_MSG_OK or CVSD_MSG_ERR telling it whether it - * obtained the lock or not. When a child is done modifying the locked portion - * it should release its lock using the CVSD_MSG_UNLOCK request with the path. - * - * NOTES: - * * The current locking mechanism allows a lock to be obtained on a - * subportion of a part that has already been locked by another process. - * * A lock on a directory only allows the owner to modify RCS files found - * within that directory. Any modifications on subdirectories require the - * process to lock those subdirectories as well. - */ - -#define CVS_LOCK_READ 1 -#define CVS_LOCK_WRITE 2 - - -struct cvs_lock { - pid_t lk_owner; - int lk_type; - CVSRPENT *lk_ent; /* backpointer to the entry */ - - TAILQ_ENTRY(cvs_lock) lk_link; - TAILQ_ENTRY(cvs_lock) lk_chlink; -}; - -TAILQ_HEAD(cvs_lklist, cvs_lock); - -struct cvs_repoent { - char *cr_name; - int cr_type; - CVSRPENT *cr_parent; - - union { - TAILQ_HEAD(, cvs_repoent) files; - } cr_data; - - struct cvs_lock *cr_wlock; /* write lock, NULL if none */ - struct cvs_lklist cr_rlocks; /* read locks */ - struct cvs_lklist cr_lkreq; /* pending lock requests */ - - TAILQ_ENTRY(cvs_repoent) cr_link; -}; - -#define cr_files cr_data.files - - - -#define CVS_REPO_LOCKED 0x01 -#define CVS_REPO_READONLY 0x02 -#define CVS_REPO_CHKPERM 0x04 - -TAILQ_HEAD(cvs_modlist, cvs_module); - -typedef struct cvs_repo { - char *cr_path; - int cr_flags; - CVSRPENT *cr_tree; - - struct cvs_modlist cr_modules; - TAILQ_ENTRY(cvs_repo) cr_link; -} CVSREPO; - - - - -CVSREPO *cvs_repo_load(const char *, int); -void cvs_repo_free(CVSREPO *); -int cvs_repo_alias(CVSREPO *, const char *, const char *); -int cvs_repo_unalias(CVSREPO *, const char *); -int cvs_repo_lockdir(CVSREPO *, const char *, int, pid_t); -int cvs_repo_unlockdir(CVSREPO *, const char *, pid_t); -int cvs_repo_lockent(CVSRPENT *, int, pid_t); -int cvs_repo_unlockent(CVSRPENT *, pid_t); -void cvs_repo_entfree(CVSRPENT *); -void cvs_repo_modfree(CVSMODULE *); - -CVSRPENT *cvs_repo_find(CVSREPO *, const char *); - - -#endif /* REPO_H */ |