48 lines
1.3 KiB
C
Executable file
48 lines
1.3 KiB
C
Executable file
#ifndef __LIB_USER_SYSCALL_H
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#define __LIB_USER_SYSCALL_H
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#include <stdbool.h>
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#include <debug.h>
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/* Process identifier. */
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typedef int pid_t;
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#define PID_ERROR ((pid_t) -1)
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/* Map region identifier. */
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typedef int mapid_t;
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#define MAP_FAILED ((mapid_t) -1)
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/* Maximum characters in a filename written by readdir(). */
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#define READDIR_MAX_LEN 14
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/* Typical return values from main() and arguments to exit(). */
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#define EXIT_SUCCESS 0 /* Successful execution. */
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#define EXIT_FAILURE 1 /* Unsuccessful execution. */
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/* Projects 2 and later. */
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void halt (void) NO_RETURN;
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void exit (int status) NO_RETURN;
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pid_t exec (const char *file);
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int wait (pid_t);
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bool create (const char *file, unsigned initial_size);
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bool remove (const char *file);
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int open (const char *file);
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int filesize (int fd);
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int read (int fd, void *buffer, unsigned length);
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int write (int fd, const void *buffer, unsigned length);
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void seek (int fd, unsigned position);
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unsigned tell (int fd);
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void close (int fd);
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/* Project 3 and optionally project 4. */
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mapid_t mmap (int fd, void *addr);
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void munmap (mapid_t);
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/* Project 4 only. */
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bool chdir (const char *dir);
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bool mkdir (const char *dir);
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bool readdir (int fd, char name[READDIR_MAX_LEN + 1]);
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bool isdir (int fd);
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int inumber (int fd);
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#endif /* lib/user/syscall.h */
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