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add some funcs of table

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源文雨
2022-05-03 21:14:30 +08:00
parent 19e09bc630
commit d17f36b255
7 changed files with 174 additions and 16 deletions
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12
src/file.c
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@@ -37,6 +37,12 @@ uint64_t get_first_unused_block(int fd) {
return ptr;
}
uint64_t get_next_unused_block(int fd, uint64_t ptr) {
if(lseek(fd, ptr, SEEK_SET) < 0) return EOF;
readle64(fd, ptr);
return ptr;
}
int set_first_table(int fd, uint64_t ptr) {
uint8_t buf[8];
if(lseek(fd, 16, SEEK_SET) < 0) return EOF;
@@ -50,3 +56,9 @@ uint64_t get_first_table(int fd) {
readle64(fd, ptr);
return ptr;
}
uint64_t get_next_table(int fd, uint64_t ptr) {
if(lseek(fd, ptr, SEEK_SET) < 0) return EOF;
readle64(fd, ptr);
return ptr;
}