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64 lines
1.3 KiB
64 lines
1.3 KiB
#include <defs.h>
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#include <stdio.h>
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#include <dev.h>
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#include <vfs.h>
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#include <iobuf.h>
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#include <inode.h>
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#include <unistd.h>
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#include <error.h>
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#include <assert.h>
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static int
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stdout_open(struct device *dev, uint32_t open_flags) {
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if (open_flags != O_WRONLY) {
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return -E_INVAL;
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}
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return 0;
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}
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static int
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stdout_close(struct device *dev) {
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return 0;
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}
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static int
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stdout_io(struct device *dev, struct iobuf *iob, bool write) {
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if (write) {
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char *data = iob->io_base;
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for (; iob->io_resid != 0; iob->io_resid --) {
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cputchar(*data ++);
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}
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return 0;
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}
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return -E_INVAL;
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}
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static int
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stdout_ioctl(struct device *dev, int op, void *data) {
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return -E_INVAL;
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}
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static void
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stdout_device_init(struct device *dev) {
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dev->d_blocks = 0;
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dev->d_blocksize = 1;
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dev->d_open = stdout_open;
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dev->d_close = stdout_close;
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dev->d_io = stdout_io;
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dev->d_ioctl = stdout_ioctl;
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}
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void
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dev_init_stdout(void) {
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struct inode *node;
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if ((node = dev_create_inode()) == NULL) {
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panic("stdout: dev_create_node.\n");
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}
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stdout_device_init(vop_info(node, device));
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int ret;
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if ((ret = vfs_add_dev("stdout", node, 0)) != 0) {
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panic("stdout: vfs_add_dev: %e.\n", ret);
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}
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}
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