mbox-rebuild.c revision a9a1257263df42c61458bd2d9dad9fe13ef4af82
/* Copyright (C) 2002 Timo Sirainen */
#include "lib.h"
#include "iobuffer.h"
#include "mbox-index.h"
#include "mbox-lock.h"
#include "mail-index-data.h"
#include "mail-index-util.h"
#include "mail-hash.h"
#include <unistd.h>
#include <fcntl.h>
#include <sys/stat.h>
#include <sys/mman.h>
int mbox_index_rebuild(MailIndex *index)
{
IOBuffer *inbuf;
struct stat st;
int fd, failed;
i_assert(index->lock_type != MAIL_LOCK_SHARED);
if (!mail_index_set_lock(index, MAIL_LOCK_EXCLUSIVE))
return FALSE;
/* reset the header */
mail_index_init_header(index->header);
index->mmap_used_length = index->header->used_file_size;
/* we require MD5 to be cached */
index->header->cache_fields |= FIELD_TYPE_MD5;
/* update indexid, which also means that our state has completely
changed */
index->indexid = index->header->indexid;
index->inconsistent = TRUE;
if (msync(index->mmap_base, sizeof(MailIndexHeader), MS_SYNC) < 0)
return index_set_syscall_error(index, "msync()");
/* reset data file */
if (!mail_index_data_reset(index->data))
return FALSE;
/* open the mbox file. we don't really need to open it read-write,
but fcntl() locking requires it. */
fd = open(index->mbox_path, O_RDWR);
if (fd == -1)
return mbox_set_syscall_error(index, "open()");
/* lock the mailbox so we can be sure no-one interrupts us. */
if (!mbox_lock(index, index->mbox_path, fd, FALSE)) {
if (close(fd) < 0)
mbox_set_syscall_error(index, "close()");
return FALSE;
}
inbuf = io_buffer_create_mmap(fd, default_pool,
MAIL_MMAP_BLOCK_SIZE, 0);
mbox_skip_empty_lines(inbuf);
failed = !mbox_index_append(index, inbuf);
(void)mbox_unlock(index, index->mbox_path, fd);
if (close(fd) < 0) mbox_set_syscall_error(index, "close()");
io_buffer_destroy(inbuf);
if (failed)
return FALSE;
/* update sync stamp */
if (stat(index->mbox_path, &st) < 0)
return mbox_set_syscall_error(index, "fstat()");
index->file_sync_stamp = st.st_mtime;
/* rebuild is complete - remove the flag */
index->header->flags &= ~(MAIL_INDEX_FLAG_REBUILD|MAIL_INDEX_FLAG_FSCK);
return TRUE;
}