39 lines
682 B
C
39 lines
682 B
C
#include "fd.h"
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struct file_entry fd_table[MAX_FD] = { 0 };
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static int find_next_fd(void)
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{
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for (int fd = 0; fd < MAX_FD; ++fd)
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{
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if (!fd_table[fd].open)
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return fd;
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}
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return -1;
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}
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int register_fd(u32 lba, u32 file_size, u8 is_dir)
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{
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int free_fd = find_next_fd();
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if (free_fd < 0)
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return -1;
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struct file_entry f = { 1, lba, 0, file_size, is_dir };
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fd_table[free_fd] = f;
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return free_fd;
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}
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int destroy_fd(int fd)
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{
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if (fd > MAX_FD || !fd_table[fd].open)
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return -1;
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fd_table[fd].open = 0;
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fd_table[fd].lba = 0;
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fd_table[fd].file_offset = 0;
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fd_table[fd].file_size = 0;
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return 0;
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}
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