Re: kernel cmdline: root=/dev/sdb1,/dev/sda1 "fallback"?

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 

H. Peter Anvin wrote:

Tomasz Chmielewski wrote:


All right.
I see that initramfs is attached to the kernel itself.
So it leaves me only a question: will I fit all tools into 300 kB (considering I'll use uClibc and busybox)? 



You don't need to use busybox and have a bunch of tools.
The klibc distribution comes with "kinit", which does the equivalent to the kernel root-mounting code; it's in the tens of kilobytes, at least on x86. If you're using ARM, you can compile it as Thumb. 

Hmm, I'm having problems compiling klibc-1.4 on ARM (using gcc-4.1.1):

# make
  GEN     klcc/klibc.config
  GEN     klcc/klcc
  HOSTCC  scripts/basic/fixdep
  GEN     usr/klibc/syscalls/SYSCALLS.i
  GEN     usr/klibc/syscalls/syscalls.nrs
  GEN     usr/klibc/syscalls/typesize.c
  KLIBCCC usr/klibc/syscalls/typesize.o
In file included from usr/klibc/../include/sys/poll.h:9,
                 from usr/klibc/../include/poll.h:1,
                 from usr/klibc/syscalls/syscommon.h:13,
                 from usr/klibc/syscalls/typesize.c:1:
usr/klibc/../include/sys/time.h:12: warning: 'struct timezone' declared inside parameter list usr/klibc/../include/sys/time.h:12: warning: 'struct timeval' declared inside parameter list usr/klibc/../include/sys/time.h:13: warning: 'struct timezone' declared inside parameter list usr/klibc/../include/sys/time.h:13: warning: 'struct timeval' declared inside parameter list usr/klibc/../include/sys/time.h:14: warning: 'struct itimerval' declared inside parameter list usr/klibc/../include/sys/time.h:15: warning: 'struct itimerval' declared inside parameter list usr/klibc/../include/sys/time.h:16: warning: 'struct timeval' declared inside parameter list 
In file included from usr/klibc/../include/poll.h:1,
                 from usr/klibc/syscalls/syscommon.h:13,
                 from usr/klibc/syscalls/typesize.c:1:
usr/klibc/../include/sys/poll.h:18: warning: 'struct timespec' declared inside parameter list 
In file included from usr/klibc/../include/sys/resource.h:10,
                 from usr/klibc/syscalls/syscommon.h:18,
                 from usr/klibc/syscalls/typesize.c:1:
/usr/include/linux/resource.h:24: error: field 'ru_utime' has incomplete type /usr/include/linux/resource.h:25: error: field 'ru_stime' has incomplete type 
In file included from usr/klibc/syscalls/syscommon.h:19,
                 from usr/klibc/syscalls/typesize.c:1:
usr/klibc/../include/sys/select.h:15: warning: 'struct timespec' declared inside parameter list 
In file included from usr/klibc/syscalls/syscommon.h:20,
                 from usr/klibc/syscalls/typesize.c:1:
usr/klibc/../include/sys/socket.h:47: warning: 'struct msghdr' declared inside parameter list usr/klibc/../include/sys/socket.h:48: warning: 'struct msghdr' declared inside parameter list 
In file included from usr/klibc/../include/sys/stat.h:11,
                 from usr/klibc/syscalls/syscommon.h:21,
                 from usr/klibc/syscalls/typesize.c:1:
usr/include/arch/arm/klibc/archstat.h:33: error: field 'st_atim' has incomplete type usr/include/arch/arm/klibc/archstat.h:34: error: field 'st_mtim' has incomplete type usr/include/arch/arm/klibc/archstat.h:35: error: field 'st_ctim' has incomplete type 
In file included from usr/klibc/syscalls/syscommon.h:21,
                 from usr/klibc/syscalls/typesize.c:1:
usr/klibc/../include/sys/stat.h: In function 'mkfifo':
usr/klibc/../include/sys/stat.h:30: error: 'S_IFMT' undeclared (first use in this function) usr/klibc/../include/sys/stat.h:30: error: (Each undeclared identifier is reported only once 
usr/klibc/../include/sys/stat.h:30: error: for each function it appears in.)
usr/klibc/../include/sys/stat.h:30: error: 'S_IFIFO' undeclared (first use in this function) 
  LIST    usr/klibc/syscalls/syscalls.list
  GEN     usr/klibc/socketcalls/SOCKETCALLS.i
  GEN     usr/klibc/socketcalls/socketcalls.mk
  KLIBCCC usr/klibc/socketcalls/socket.o
In file included from usr/klibc/../include/sys/stat.h:10,
                 from usr/klibc/socketcalls/socketcommon.h:12,
                 from usr/klibc/socketcalls/socket.c:1:
usr/klibc/../include/sys/time.h:12: warning: 'struct timezone' declared inside parameter list usr/klibc/../include/sys/time.h:12: warning: 'struct timeval' declared inside parameter list usr/klibc/../include/sys/time.h:13: warning: 'struct timezone' declared inside parameter list usr/klibc/../include/sys/time.h:13: warning: 'struct timeval' declared inside parameter list usr/klibc/../include/sys/time.h:14: warning: 'struct itimerval' declared inside parameter list usr/klibc/../include/sys/time.h:15: warning: 'struct itimerval' declared inside parameter list usr/klibc/../include/sys/time.h:16: warning: 'struct timeval' declared inside parameter list 
In file included from usr/klibc/../include/sys/stat.h:11,
                 from usr/klibc/socketcalls/socketcommon.h:12,
                 from usr/klibc/socketcalls/socket.c:1:
usr/include/arch/arm/klibc/archstat.h:33: error: field 'st_atim' has incomplete type usr/include/arch/arm/klibc/archstat.h:34: error: field 'st_mtim' has incomplete type usr/include/arch/arm/klibc/archstat.h:35: error: field 'st_ctim' has incomplete type 
In file included from usr/klibc/socketcalls/socketcommon.h:12,
                 from usr/klibc/socketcalls/socket.c:1:
usr/klibc/../include/sys/stat.h: In function 'mkfifo':
usr/klibc/../include/sys/stat.h:30: error: 'S_IFMT' undeclared (first use in this function) usr/klibc/../include/sys/stat.h:30: error: (Each undeclared identifier is reported only once 
usr/klibc/../include/sys/stat.h:30: error: for each function it appears in.)
usr/klibc/../include/sys/stat.h:30: error: 'S_IFIFO' undeclared (first use in this function) 
In file included from usr/klibc/socketcalls/socketcommon.h:14,
                 from usr/klibc/socketcalls/socket.c:1:
usr/klibc/../include/sys/socket.h: At top level:
usr/klibc/../include/sys/socket.h:47: warning: 'struct msghdr' declared inside parameter list usr/klibc/../include/sys/socket.h:48: warning: 'struct msghdr' declared inside parameter list 
make[3]: *** [usr/klibc/socketcalls/socket.o] Error 1
make[2]: *** [usr/klibc/socketcalls] Error 2
make[1]: *** [all] Error 2
make: *** [klibc] Error 2



--
Tomasz Chmielewski
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/
[Index of Archives]     [Kernel Newbies]     [Netfilter]     [Bugtraq]     [Photo]     [Stuff]     [Gimp]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Video 4 Linux]     [Linux for the blind]     [Linux Resources]
  Powered by Linux