patch-2.1.67 linux/drivers/sound/sound_firmware.c

• Lines: 59
• Date: Sat Nov 29 10:33:21 1997
• Orig file: v2.1.66/linux/drivers/sound/sound_firmware.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.1.66/linux/drivers/sound/sound_firmware.c linux/drivers/sound/sound_firmware.c
@@ -0,0 +1,58 @@
+#define __KERNEL_SYSCALLS__
+#include <linux/fs.h>
+#include <linux/mm.h>
+#include <linux/malloc.h>
+#include <linux/unistd.h>
+#include <asm/uaccess.h>
+
+static int errno;
+
+static int do_mod_firmware_load(const char *fn, char **fp)
+{
+	int fd;
+	long l;
+	char *dp;
+
+	fd = open(fn, 0, 0);
+	if (fd == -1)
+	{
+		printk(KERN_INFO "Unable to load '%s'.\n", fn);
+		return 0;
+	}
+	l = lseek(fd, 0L, 2);
+	if (l <= 0 || l > 65535)
+	{
+		printk(KERN_INFO "Invalid firmware '%s'\n", fn);
+		sys_close(fd);
+		  return 0;
+	}
+	lseek(fd, 0L, 0);
+	dp = kmalloc(l, GFP_KERNEL);
+	if (dp == NULL)
+	{
+		printk(KERN_INFO "Out of memory loading '%s'.\n", fn);
+		sys_close(fd);
+		return 0;
+	}
+	if (read(fd, dp, l) != l)
+	{
+		printk(KERN_INFO "Failed to read '%s'.\n", fn);
+		kfree(dp);
+		sys_close(fd);
+		return 0;
+	}
+	close(fd);
+	*fp = dp;
+	return (int) l;
+}
+
+int  mod_firmware_load(const char *fn, char **fp)
+{
+	int r;
+	unsigned long fs = get_fs();
+
+	set_fs(get_ds());
+	r = do_mod_firmware_load(fn, fp);
+	set_fs(fs);
+	return r;
+}