52 lines
1.2 KiB
C
52 lines
1.2 KiB
C
#ifndef _FCNTL_H
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#define _FCNTL_H
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/* Open for reading only. */
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#define O_RDONLY 1
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/* Open for writing only. */
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#define O_WRONLY 2
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/* Open for reading and writing. */
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#define O_RDWR 3
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/* Open without blocking. */
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#define O_NONBLOCK 4
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/* Close the opened file descriptor on a call to execve(). */
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#define O_CLOEXEC 8
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/* Refuse to open the file if it is not a directory. */
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#define O_DIRECTORY 16
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/* Truncate the file on open. */
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#define O_TRUNC 32
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/* Create the file if it doesn't exist. */
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#define O_CREAT 64
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/* Open the file for appending. */
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#define O_APPEND 128
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/* Fail to open the file if it already exists. */
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#define O_EXCL 256
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/* Duplicate a file descriptor. */
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#define F_DUPFD 0
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/* Is a file descriptor a TTY? */
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#define F_ISTTY 1
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/* Get the file descriptor flags. */
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#define F_GETFD 2
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/* Set the file descriptor flags. */
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#define F_SETFD 3
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/* Close the file descriptor on a call to execve(). */
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#define FD_CLOEXEC 1
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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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/* Opens the file specified by pathname. Returns a file descriptor on success, or -1 on error. */
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int open(const char* pathname, int flags, ...);
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/* Performs an operation on the file descriptor fd determined by cmd. */
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int fcntl(int fd, int cmd, ...);
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#ifdef __cplusplus
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}
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#endif
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#endif |