add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/init/do_mounts.h
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@@ -8,26 +8,16 @@
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 #include <linux/mount.h>
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 #include <linux/major.h>
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 #include <linux/root_dev.h>
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+#include <linux/init_syscalls.h>
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-void  change_floppy(char *fmt, ...);
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 void  mount_block_root(char *name, int flags);
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 void  mount_root(void);
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 extern int root_mountflags;
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-static inline int create_dev(char *name, dev_t dev)
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+static inline __init int create_dev(char *name, dev_t dev)
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 {
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-	ksys_unlink(name);
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-	return ksys_mknod(name, S_IFBLK|0600, new_encode_dev(dev));
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-}
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-
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-static inline u32 bstat(char *name)
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-{
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-	struct kstat stat;
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-	if (vfs_stat(name, &stat) != 0)
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-		return 0;
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-	if (!S_ISBLK(stat.mode))
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-		return 0;
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-	return stat.rdev;
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+	init_unlink(name);
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+	return init_mknod(name, S_IFBLK | 0600, new_encode_dev(dev));
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 }
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 #ifdef CONFIG_BLK_DEV_RAM
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@@ -49,15 +39,5 @@
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 #else
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 static inline bool initrd_load(void) { return false; }
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-
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-#endif
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-
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-#ifdef CONFIG_BLK_DEV_MD
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-
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-void md_run_setup(void);
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-
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-#else
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-
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-static inline void md_run_setup(void) {}
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 #endif