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allow duplicate reservations when flushing the log.

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This commit is contained in:
nvt-se 2008-10-28 14:47:50 +00:00
parent a0bf017e2f
commit e15fbdbd40
1 changed files with 16 additions and 10 deletions
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26
core/cfs/cfs-coffee.c
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@ -562,8 +562,8 @@ create_log(coffee_page_t file_page, struct file_header *hdr)
size = log_entries * sizeof(uint16_t);
size += log_entries * log_entry_size;
log_page = cfs_coffee_reserve(create_log_name(log_name, sizeof(log_name), hdr->name),
size);
log_page = reserve(create_log_name(log_name, sizeof(log_name), hdr->name),
size, 0);
if(log_page < 0) {
return -1;
}
@ -593,6 +593,7 @@ flush_log(coffee_page_t file_page)
READ_HEADER(&hdr, file_page);
log_page = hdr.log_page;
fd = cfs_open(hdr.name, CFS_READ);
if(fd < 0) {
return -1;
@ -603,8 +604,7 @@ flush_log(coffee_page_t file_page)
* already been calculated with in the previous reservation. Therefore
* we subtract max_pages by 1.
*/
new_file_page = cfs_coffee_reserve(hdr.name,
(hdr.max_pages - 1) * COFFEE_PAGE_SIZE);
new_file_page = reserve(hdr.name, (hdr.max_pages - 1) * COFFEE_PAGE_SIZE, 1);
if(new_file_page < 0) {
cfs_close(fd);
return -1;
@ -630,7 +630,7 @@ flush_log(coffee_page_t file_page)
cfs_close(fd);
return -1;
}
/* Copy the log configuration and the EOF hint. */
READ_HEADER(&hdr2, new_file_page);
hdr2.log_entry_size = hdr.log_entry_size;
@ -647,7 +647,7 @@ flush_log(coffee_page_t file_page)
}
cfs_close(fd);
return 0;
}
/*---------------------------------------------------------------------------*/
@ -789,7 +789,7 @@ cfs_open(const char *name, int flags)
if((flags & (CFS_READ | CFS_WRITE)) == CFS_READ) {
return -1;
}
if((page = cfs_coffee_reserve(name, COFFEE_DYN_SIZE)) < 0) {
if((page = reserve(name, COFFEE_DYN_SIZE, 1)) < 0) {
return -1;
}
coffee_fd_set[fd].max_pages = (COFFEE_DYN_SIZE + sizeof(hdr) +
@ -1032,14 +1032,14 @@ cfs_closedir(struct cfs_dir *dir)
return;
}
/*---------------------------------------------------------------------------*/
int
cfs_coffee_reserve(const char *name, uint32_t size)
static
reserve(const char *name, uint32_t size, int allow_duplicates)
{
struct file_header hdr;
unsigned need_pages;
int page;
if(find_file(name) >= 0) {
if(!allow_duplicates && find_file(name) >= 0) {
return -1;
}
@ -1076,6 +1076,12 @@ cfs_coffee_reserve(const char *name, uint32_t size)
}
/*---------------------------------------------------------------------------*/
int
cfs_coffee_reserve(const char *name, uint32_t size)
{
return reserve(name, size, 0);
}
/*---------------------------------------------------------------------------*/
int
cfs_coffee_configure_log(const char *file, unsigned log_size, unsigned log_entry_size)
{
coffee_page_t page;