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Simplified file finding code. 

Renamed fd_set to coffee_fd_set in order to avoid name clash on the native
platform.
This commit is contained in:
nvt-se 2008-07-03 23:29:58 +00:00
parent c6579d4f08
commit 8f64a71362
1 changed files with 32 additions and 34 deletions
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66
core/cfs/cfs-coffee.c
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@ -86,10 +86,10 @@ struct file_desc {
#define COFFEE_PAGE_MODIFIED(hdr) ((hdr).flags & COFFEE_FLAG_MODIFIED)
#define FD_VALID(fd) \
((fd) < COFFEE_FD_SET_SIZE && fd_set[(fd)].flags != COFFEE_FD_FREE)
#define FD_READABLE(fd) (fd_set[(fd)].flags & CFS_READ)
#define FD_WRITABLE(fd) (fd_set[(fd)].flags & CFS_WRITE)
#define FD_APPENDABLE(fd) (fd_set[(fd)].flags & CFS_APPEND)
((fd) < COFFEE_FD_SET_SIZE && coffee_fd_set[(fd)].flags != COFFEE_FD_FREE)
#define FD_READABLE(fd) (coffee_fd_set[(fd)].flags & CFS_READ)
#define FD_WRITABLE(fd) (coffee_fd_set[(fd)].flags & CFS_WRITE)
#define FD_APPENDABLE(fd) (coffee_fd_set[(fd)].flags & CFS_APPEND)
struct dir_cache {
char filename_start;
@ -118,7 +118,7 @@ struct log_param {
sizeof (struct file_header) + (file_offset))
static struct dir_cache dir_cache[COFFEE_DIR_CACHE_ENTRIES];
static struct file_desc fd_set[COFFEE_FD_SET_SIZE];
static struct file_desc coffee_fd_set[COFFEE_FD_SET_SIZE];
/*---------------------------------------------------------------------------*/
static void
@ -229,7 +229,6 @@ static int32_t
find_file(const char *name)
{
struct file_header hdr;
uint32_t offset;
int32_t page;
page = dir_cache_find(name);
@ -237,23 +236,22 @@ find_file(const char *name)
return page;
}
offset = COFFEE_START;
page = 0;
do {
READ_HEADER(&hdr, offset);
READ_HEADER(&hdr, page);
if(COFFEE_PAGE_ACTIVE(hdr)) {
if(strcmp(name, hdr.name) == 0) {
page = (offset - COFFEE_START) / COFFEE_PAGE_SIZE;
dir_cache_add(name[0], page);
return page;
}
offset += hdr.max_pages * COFFEE_PAGE_SIZE;
page += hdr.max_pages;
} else if(COFFEE_PAGE_OBSOLETE(hdr)) {
offset += hdr.max_pages * COFFEE_PAGE_SIZE;
page += hdr.max_pages;
} else {
offset += COFFEE_PAGE_SIZE;
page++;
}
watchdog_periodic();
} while(offset + sizeof (hdr) < COFFEE_SIZE);
} while(page < COFFEE_PAGE_COUNT);
return -1;
}
@ -391,8 +389,8 @@ remove_by_page(uint16_t page, int remove_log, int close_fds)
/* Close all file descriptors that reference the remove file. */
if(close_fds) {
for(i = 0; i < COFFEE_FD_SET_SIZE; i++) {
if(fd_set[i].file_page == page) {
fd_set[i].flags = COFFEE_FD_FREE;
if(coffee_fd_set[i].file_page == page) {
coffee_fd_set[i].flags = COFFEE_FD_FREE;
}
}
}
@ -565,8 +563,8 @@ flush_log(uint16_t file_page)
/* Point the file descriptors to the new file page. */
for(n = 0; n < COFFEE_FD_SET_SIZE; n++) {
if(fd_set[n].file_page == file_page) {
fd_set[n].file_page = new_file_page;
if(coffee_fd_set[n].file_page == file_page) {
coffee_fd_set[n].file_page = new_file_page;
}
}
@ -688,7 +686,7 @@ get_available_fd(void)
int i;
for(i = 0; i < COFFEE_FD_SET_SIZE; i++) {
if(fd_set[i].flags == COFFEE_FD_FREE) {
if(coffee_fd_set[i].flags == COFFEE_FD_FREE) {
return i;
}
}
@ -715,17 +713,17 @@ cfs_open(const char *name, int flags)
if((page = cfs_coffee_reserve(name, COFFEE_DYN_SIZE)) < 0) {
return -1;
}
fd_set[fd].max_pages = COFFEE_DYN_SIZE / COFFEE_PAGE_SIZE;
coffee_fd_set[fd].max_pages = COFFEE_DYN_SIZE / COFFEE_PAGE_SIZE;
} else {
READ_HEADER(&hdr, page);
fd_set[fd].max_pages = hdr.max_pages;
coffee_fd_set[fd].max_pages = hdr.max_pages;
}
fd_set[fd].file_page = page;
fd_set[fd].flags = flags;
fd_set[fd].end = find_offset_in_file(page);
fd_set[fd].offset = flags & CFS_APPEND ? fd_set[fd].end : 0;
fd_set[fd].next_log_entry = 0;
coffee_fd_set[fd].file_page = page;
coffee_fd_set[fd].flags = flags;
coffee_fd_set[fd].end = find_offset_in_file(page);
coffee_fd_set[fd].offset = flags & CFS_APPEND ? coffee_fd_set[fd].end : 0;
coffee_fd_set[fd].next_log_entry = 0;
return fd;
}
@ -734,7 +732,7 @@ void
cfs_close(int fd)
{
if(FD_VALID(fd)) {
fd_set[fd].flags = COFFEE_FD_FREE;
coffee_fd_set[fd].flags = COFFEE_FD_FREE;
}
}
/*---------------------------------------------------------------------------*/
@ -747,17 +745,17 @@ cfs_seek(int fd, unsigned offset)
return -1;
}
READ_HEADER(&hdr, fd_set[fd].file_page);
READ_HEADER(&hdr, coffee_fd_set[fd].file_page);
if(sizeof (hdr) + offset >= hdr.max_pages * COFFEE_PAGE_SIZE) {
/* XXX: Try to extend the file here? */
return -1;
}
if(fd_set[fd].end < offset) {
fd_set[fd].end = offset;
if(coffee_fd_set[fd].end < offset) {
coffee_fd_set[fd].end = offset;
}
return fd_set[fd].offset = offset;
return coffee_fd_set[fd].offset = offset;
}
/*---------------------------------------------------------------------------*/
int
@ -787,7 +785,7 @@ cfs_read(int fd, void *buf, unsigned size)
return -1;
}
fdp = &fd_set[fd];
fdp = &coffee_fd_set[fd];
if(fdp->offset + size > fdp->end) {
size = fdp->end - fdp->offset;
}
@ -838,7 +836,7 @@ cfs_write(int fd, const void *buf, unsigned size)
return -1;
}
fdp = &fd_set[fd];
fdp = &coffee_fd_set[fd];
if(size + fdp->offset + sizeof (struct file_header) >
fdp->max_pages * COFFEE_PAGE_SIZE) {
@ -870,8 +868,8 @@ cfs_write(int fd, const void *buf, unsigned size)
* referencing this file must be updated.
*/
for(i = 0; i < COFFEE_FD_SET_SIZE; i++) {
if(fd_set[i].file_page == fdp->file_page) {
fd_set[i].end = fd_set[i].offset;
if(coffee_fd_set[i].file_page == fdp->file_page) {
coffee_fd_set[i].end = coffee_fd_set[i].offset;
}
}
}