110 lines
3.4 KiB
C
110 lines
3.4 KiB
C
#ifndef _UNISTD_H
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#define _UNISTD_H
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#include <bits/macros.h>
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#include <bits/seek.h>
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#include <luna/os-limits.h>
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#include <sys/types.h>
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#define STDIN_FILENO 0 // The standard input stream.
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#define STDOUT_FILENO 1 // The standard output stream.
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#define STDERR_FILENO 2 // The standard error stream.
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#define F_OK 0 // Check for a file's existence.
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#define R_OK 1 // Check whether a file is readable.
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#define W_OK 2 // Check whether a file is writable.
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#define X_OK 4 // Check whether a file is executable.
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#ifdef __cplusplus
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extern "C"
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{
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#endif
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/* Executes the program program, passing the arguments in the argument list argv. On success, does not return. */
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int execv(const char* program, char* const argv[]);
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/* Not implemented. */
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int execve(const char*, char* const[], char* const[]);
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/* Not implemented. */
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int execvp(const char*, char* const[]);
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/* Creates an identical copy (child) of the current process (parent). Returns 0 to the child, and the child's PID to
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* the parent. */
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pid_t fork(void);
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/* Returns the current process' process ID. */
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pid_t getpid(void);
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/* Returns the current process' parent's process ID. */
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pid_t getppid(void);
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/* Returns the current process' real user ID. */
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uid_t getuid(void);
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/* Returns the current process' effective user ID. */
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uid_t geteuid(void);
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/* Returns the current process' real group ID. */
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gid_t getgid(void);
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/* Returns the current process' effective group ID. */
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gid_t getegid(void);
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/* Sets the current process' real and effective user IDs. */
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int setuid(uid_t uid);
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/* Sets the current process' effective user ID. */
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int seteuid(uid_t euid);
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/* Sets the current process' real and effective group IDs. */
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int setgid(gid_t gid);
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/* Sets the current process' effective group ID. */
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int setegid(gid_t egid);
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/* Terminates the program with the status code status. */
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__lc_noreturn void _exit(int status);
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/* Calls the kernel for a specific service, determined by number. */
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long syscall(long number, ...);
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/* Suspends execution for a chosen amount of seconds. */
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unsigned int sleep(unsigned int seconds);
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/* Reads count bytes from the file descriptor fd into the memory at buf. */
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ssize_t read(int fd, void* buf, size_t count);
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/* Writes count bytes of the memory at buf to the file descriptor fd. */
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ssize_t write(int fd, const void* buf, size_t count);
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/* Closes the file descriptor fd. */
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int close(int fd);
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/* Moves the read/write file offset for fd to offset, depending on whence. */
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off_t lseek(int fd, off_t offset, int whence);
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/* Returns a copy of the file descriptor fd. */
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int dup(int fd);
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/* Causes the file descriptor fd2 to refer to the file descriptor fd. */
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int dup2(int fd, int fd2);
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/* Checks if the current program can access the file or directory at path. */
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int access(const char* path, int amode);
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/* Checks if the file descriptor fd refers to a terminal. */
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int isatty(int fd);
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/* Writes the current process's current working directory to buf. */
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char* getcwd(char* buf, size_t size);
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int unlink(const char* path); // Not implemented.
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int rmdir(const char* path); // Not implemented.
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int chdir(const char* path); // Not implemented.
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int pipe(int fd[2]); // Not implemented.
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#ifdef __cplusplus
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}
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#endif
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#endif |