mirror of
https://github.com/torvalds/linux
synced 2024-11-05 18:23:50 +00:00
046aa1265f
sys_newlstat is a system call implementation that is meant for user space, and that copies kernel-internal data structure to the user format, which is not needed for in-kernel users. Further, as we rearrange the system call implementation so we can extend it with 64-bit time_t, the prototype for sys_newlstat changes. This changes the initramfs code to use vfs_lstat directly, to get it out of the way of the time_t changes, and make it slightly more efficient in the process. Along the same lines we also replace sys_stat and sys_stat64 with vfs_stat. Link: http://lkml.kernel.org/r/20170314214932.4052842-1-arnd@arndb.de Signed-off-by: Arnd Bergmann <arnd@arndb.de> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
62 lines
1.1 KiB
C
62 lines
1.1 KiB
C
#include <linux/kernel.h>
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#include <linux/blkdev.h>
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#include <linux/init.h>
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#include <linux/syscalls.h>
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#include <linux/unistd.h>
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#include <linux/slab.h>
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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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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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{
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sys_unlink(name);
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return sys_mknod(name, S_IFBLK|0600, new_encode_dev(dev));
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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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}
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#ifdef CONFIG_BLK_DEV_RAM
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int __init rd_load_disk(int n);
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int __init rd_load_image(char *from);
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#else
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static inline int rd_load_disk(int n) { return 0; }
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static inline int rd_load_image(char *from) { return 0; }
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#endif
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#ifdef CONFIG_BLK_DEV_INITRD
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bool __init initrd_load(void);
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#else
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static inline bool initrd_load(void) { return false; }
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#endif
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#ifdef CONFIG_BLK_DEV_MD
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void md_run_setup(void);
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#else
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static inline void md_run_setup(void) {}
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#endif
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