int tag_add(const char *author, const char *tag, uint64_t record) {
char filename[512];
- struct tag t;
+ struct blergref t;
memset(t.author, 0, 32);
strncpy(t.author, author, 32);
perror("Could not open tag file");
return 0;
}
- int n = write(tag_fd, &t, sizeof(struct tag));
- if (n < sizeof(struct tag)) {
+ int n = write(tag_fd, &t, sizeof(struct blergref));
+ if (n < sizeof(struct blergref)) {
perror("Could not write new tag");
return 0;
}
return 1;
}
-struct tag * tag_list(const char *tag, uint64_t offset, int *count, int direction) {
+struct blergref * tag_list(const char *tag, uint64_t offset, int *count, int direction) {
char filename[512];
struct stat st;
- struct tag *taglist;
- struct tag *retlist;
+ struct blergref *taglist;
+ struct blergref *retlist;
uint64_t n_tag_records;
- if (!valid_name(tag + 1))
+ if (!valid_tag_name(tag + 1))
return NULL;
+
+ if (!(direction == 1 || direction == -1)) {
+ fprintf(stderr, "Invalid direction: %d\n", direction);
+ return NULL;
+ }
switch(tag[0]) {
case '#':
int tag_fd = open(filename, O_RDONLY, 0600);
if (tag_fd == -1) {
perror("Could not open tag file");
- *count = 0;
- return NULL;
+ goto tag_list_open_failed;
}
fstat(tag_fd, &st);
if (st.st_size == 0) {
- close(tag_fd);
- *count = 0;
- return NULL;
+ goto tag_list_map_failed;
}
- n_tag_records = st.st_size / sizeof(struct tag);
- if (*count > n_tag_records)
- *count = n_tag_records;
+ n_tag_records = st.st_size / sizeof(struct blergref);
+ if (*count > n_tag_records - offset)
+ *count = n_tag_records - offset;
if (offset > n_tag_records) {
fprintf(stderr, "Cannot access tag record beyond end\n");
- return NULL;
+ goto tag_list_map_failed;
}
- taglist = (struct tag *) mmap(NULL, st.st_size, PROT_READ, MAP_SHARED, tag_fd, 0);
+ taglist = (struct blergref *) mmap(NULL, st.st_size, PROT_READ, MAP_SHARED, tag_fd, 0);
if (taglist == MAP_FAILED) {
perror("Could not mmap tag file");
goto tag_list_map_failed;
}
- retlist = (struct tag *) malloc(sizeof(struct tag) * *count);
+ retlist = (struct blergref *) malloc(sizeof(struct blergref) * *count);
if (retlist == NULL) {
perror("Could not allocate memory for tag list");
goto tag_list_malloc_failed;
}
switch(direction) {
case 1:
- memcpy(retlist, taglist + offset, sizeof(struct tag) * *count);
+ memcpy(retlist, taglist + offset, sizeof(struct blergref) * *count);
break;
case -1:
- memcpy(retlist, taglist + (n_tag_records - *count - offset), sizeof(struct tag) * *count);
+ memcpy(retlist, taglist + (n_tag_records - *count - offset), sizeof(struct blergref) * *count);
break;
}
tag_list_map_failed:
close(tag_fd);
tag_list_open_failed:
+ *count = 0;
return NULL;
}
int tag_exists(const char *tag) {
char filename[512];
- if (!valid_name(tag + 1))
+ if (!valid_tag_name(tag + 1))
return 0;
if (!(tag[0] == '@' || tag[0] == '#')) {