diff options
| author | Christoph Hellwig <[email protected]> | 2019-05-13 17:18:24 -0700 |
|---|---|---|
| committer | Linus Torvalds <[email protected]> | 2019-05-14 09:47:47 -0700 |
| commit | 7c184ecd262fe64fe8cf4e099e0f7cefe88d88b2 (patch) | |
| tree | ca950aa20bf44390628608298e6b0a964536f43e | |
| parent | 23091e287355440fb680868c23bcada594d3f399 (diff) | |
initramfs: factor out a helper to populate the initrd image
This will allow for cleaner code sharing in the caller.
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Christoph Hellwig <[email protected]>
Acked-by: Mike Rapoport <[email protected]>
Cc: Catalin Marinas <[email protected]> [arm64]
Cc: Geert Uytterhoeven <[email protected]> [m68k]
Cc: Steven Price <[email protected]>
Cc: Alexander Viro <[email protected]>
Cc: Guan Xuetao <[email protected]>
Cc: Russell King <[email protected]>
Cc: Will Deacon <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
| -rw-r--r-- | init/initramfs.c | 40 |
1 files changed, 23 insertions, 17 deletions
diff --git a/init/initramfs.c b/init/initramfs.c index 5fda9557a134..e3de626dbd98 100644 --- a/init/initramfs.c +++ b/init/initramfs.c @@ -597,6 +597,28 @@ static void __init clean_rootfs(void) } #endif +#ifdef CONFIG_BLK_DEV_RAM +static void populate_initrd_image(char *err) +{ + ssize_t written; + int fd; + + unpack_to_rootfs(__initramfs_start, __initramfs_size); + + printk(KERN_INFO "rootfs image is not initramfs (%s); looks like an initrd\n", + err); + fd = ksys_open("/initrd.image", O_WRONLY | O_CREAT, 0700); + if (fd < 0) + return; + + written = xwrite(fd, (char *)initrd_start, initrd_end - initrd_start); + if (written != initrd_end - initrd_start) + pr_err("/initrd.image: incomplete write (%zd != %ld)\n", + written, initrd_end - initrd_start); + ksys_close(fd); +} +#endif /* CONFIG_BLK_DEV_RAM */ + static int __init populate_rootfs(void) { /* Load the built in initramfs */ @@ -606,7 +628,6 @@ static int __init populate_rootfs(void) /* If available load the bootloader supplied initrd */ if (initrd_start && !IS_ENABLED(CONFIG_INITRAMFS_FORCE)) { #ifdef CONFIG_BLK_DEV_RAM - int fd; printk(KERN_INFO "Trying to unpack rootfs image as initramfs...\n"); err = unpack_to_rootfs((char *)initrd_start, initrd_end - initrd_start); @@ -614,22 +635,7 @@ static int __init populate_rootfs(void) goto done; clean_rootfs(); - unpack_to_rootfs(__initramfs_start, __initramfs_size); - - printk(KERN_INFO "rootfs image is not initramfs (%s)" - "; looks like an initrd\n", err); - fd = ksys_open("/initrd.image", - O_WRONLY|O_CREAT, 0700); - if (fd >= 0) { - ssize_t written = xwrite(fd, (char *)initrd_start, - initrd_end - initrd_start); - - if (written != initrd_end - initrd_start) - pr_err("/initrd.image: incomplete write (%zd != %ld)\n", - written, initrd_end - initrd_start); - - ksys_close(fd); - } + populate_initrd_image(err); done: /* empty statement */; #else |