diff options
Diffstat (limited to 'usr')
| -rw-r--r-- | usr/Kconfig | 18 | ||||
| -rw-r--r-- | usr/Makefile | 5 | ||||
| -rw-r--r-- | usr/gen_init_cpio.c | 20 |
3 files changed, 36 insertions, 7 deletions
diff --git a/usr/Kconfig b/usr/Kconfig index c2c7fe2f717d..4780deac5974 100644 --- a/usr/Kconfig +++ b/usr/Kconfig @@ -72,6 +72,15 @@ config RD_LZMA Support loading of a LZMA encoded initial ramdisk or cpio buffer If unsure, say N. +config RD_XZ + bool "Support initial ramdisks compressed using XZ" if EMBEDDED + default !EMBEDDED + depends on BLK_DEV_INITRD + select DECOMPRESS_XZ + help + Support loading of a XZ encoded initial ramdisk or cpio buffer. + If unsure, say N. + config RD_LZO bool "Support initial ramdisks compressed using LZO" if EMBEDDED default !EMBEDDED @@ -139,6 +148,15 @@ config INITRAMFS_COMPRESSION_LZMA three. Compression is slowest. The initramfs size is about 33% smaller with LZMA in comparison to gzip. +config INITRAMFS_COMPRESSION_XZ + bool "XZ" + depends on RD_XZ + help + XZ uses the LZMA2 algorithm. The initramfs size is about 30% + smaller with XZ in comparison to gzip. Decompression speed + is better than that of bzip2 but worse than gzip and LZO. + Compression is slow. + config INITRAMFS_COMPRESSION_LZO bool "LZO" depends on RD_LZO diff --git a/usr/Makefile b/usr/Makefile index 6faa444b7087..029ffe6cd0d8 100644 --- a/usr/Makefile +++ b/usr/Makefile @@ -15,6 +15,9 @@ suffix_$(CONFIG_INITRAMFS_COMPRESSION_BZIP2) = .bz2 # Lzma suffix_$(CONFIG_INITRAMFS_COMPRESSION_LZMA) = .lzma +# XZ +suffix_$(CONFIG_INITRAMFS_COMPRESSION_XZ) = .xz + # Lzo suffix_$(CONFIG_INITRAMFS_COMPRESSION_LZO) = .lzo @@ -50,7 +53,7 @@ endif quiet_cmd_initfs = GEN $@ cmd_initfs = $(initramfs) -o $@ $(ramfs-args) $(ramfs-input) -targets := initramfs_data.cpio.gz initramfs_data.cpio.bz2 initramfs_data.cpio.lzma initramfs_data.cpio.lzo initramfs_data.cpio +targets := initramfs_data.cpio.gz initramfs_data.cpio.bz2 initramfs_data.cpio.lzma initramfs_data.cpio.xz initramfs_data.cpio.lzo initramfs_data.cpio # do not try to update files included in initramfs $(deps_initramfs): ; diff --git a/usr/gen_init_cpio.c b/usr/gen_init_cpio.c index b2b3c2d1cf8b..7f06884ecd41 100644 --- a/usr/gen_init_cpio.c +++ b/usr/gen_init_cpio.c @@ -104,6 +104,8 @@ static int cpio_mkslink(const char *name, const char *target, char s[256]; time_t mtime = time(NULL); + if (name[0] == '/') + name++; sprintf(s,"%s%08X%08X%08lX%08lX%08X%08lX" "%08X%08X%08X%08X%08X%08X%08X", "070701", /* magic */ @@ -152,6 +154,8 @@ static int cpio_mkgeneric(const char *name, unsigned int mode, char s[256]; time_t mtime = time(NULL); + if (name[0] == '/') + name++; sprintf(s,"%s%08X%08X%08lX%08lX%08X%08lX" "%08X%08X%08X%08X%08X%08X%08X", "070701", /* magic */ @@ -245,6 +249,8 @@ static int cpio_mknod(const char *name, unsigned int mode, else mode |= S_IFCHR; + if (name[0] == '/') + name++; sprintf(s,"%s%08X%08X%08lX%08lX%08X%08lX" "%08X%08X%08X%08X%08X%08X%08X", "070701", /* magic */ @@ -303,18 +309,18 @@ static int cpio_mkfile(const char *name, const char *location, mode |= S_IFREG; - retval = stat (location, &buf); - if (retval) { - fprintf (stderr, "File %s could not be located\n", location); - goto error; - } - file = open (location, O_RDONLY); if (file < 0) { fprintf (stderr, "File %s could not be opened for reading\n", location); goto error; } + retval = fstat(file, &buf); + if (retval) { + fprintf(stderr, "File %s could not be stat()'ed\n", location); + goto error; + } + filebuf = malloc(buf.st_size); if (!filebuf) { fprintf (stderr, "out of memory\n"); @@ -332,6 +338,8 @@ static int cpio_mkfile(const char *name, const char *location, /* data goes on last link */ if (i == nlinks) size = buf.st_size; + if (name[0] == '/') + name++; namesize = strlen(name) + 1; sprintf(s,"%s%08X%08X%08lX%08lX%08X%08lX" "%08lX%08X%08X%08X%08X%08X%08X", |