Marcel Moolenaar f2fb1d4531 Provide a means for loaders to control which file system to use. This ... to counteract the default behaviour of always trying each and every file system until one succeeds, or the open fails. The problem with the loader is that we've implemented features based on this behavior. The handling of compressed files is a good example of this. However, it is in general highly undesirable to not have a one-time probe (or taste in the geom lingo), followed by something similar to a mount whenever we (first) read from a device. Everytime we go to the same device, we can reasonably assume it (still) has the same file system. For file systems that need to do far more that a trivial read of a super block, not having something similar to a mount operation is disastrous from a performance (and thus usability) perspective. But, again, since we've implemented features based on this stateless approach, things can get complicated quickly if and when we want to change this. And yet, we sometimes do need stateful behaviour. For this reason, this change simply introduces exclusive_file_system. When set to the fsops of the file system to use, the open call will only try this file system. Setting it to NULL restores the default behaviour. It's a low-cost (low-brow?) approach to provide enough control without re-implementing the guts of the loader. A good example of when this is useful is when we're trying to load files out of a container (say, a software packaga) that itself lives on a file system or is fetched over the network. While opening the container can be done in the normal stateless manner, once it is opened, subsequent opens should only consider the container. Obtained from: Juniper Networks, Inc.		2014-07-30 16:08:16 +00:00
..
amd64	Move the 64-bit _setjmp to lib/libstand.	2012-12-21 15:15:35 +00:00
i386
mips	Merge @228176 from Perforce to fix a bug introduced in r249553:	2013-04-28 14:40:29 +00:00
powerpc	Make libstand setjmp work for both 64- and 32-bit ABIs.	2014-02-07 14:24:36 +00:00
sparc64
__main.c
arp.c
assert.c
bcd.c
bootp.c
bootp.h
bootparam.c
bootparam.h
bswap.c
bzipfs.c
cd9660.c
close.c	Clear f_rabuf after freeing the memory it points to. This prevents a	2013-12-18 04:52:30 +00:00
closeall.c
dev.c
dosfs.c	Fix readdir for the root directory on a FAT32 file system. The root	2013-12-19 05:23:10 +00:00
dosfs.h	Fix readdir for the root directory on a FAT32 file system. The root	2013-12-19 05:23:10 +00:00
environment.c	Fix an inappropriate free of a non-dynamic value. While here, make the	2013-12-18 17:03:43 +00:00
ether.c
ext2fs.c	libstand: Reset the seek pointer in ext2fs as done in UFS.	2013-06-09 01:19:22 +00:00
fstat.c
getopt.c
gets.c
globals.c
gzipfs.c
in_cksum.c
inet_ntoa.c
ioctl.c
iodesc.h
libstand.3	use .Mt to mark up email addresses consistently (part3)	2014-06-23 08:23:05 +00:00
lseek.c
Makefile	Remove ia64.	2014-07-07 00:27:09 +00:00
nandfs.c	Make this WARNS=9 clean on i386 w/ clang.	2013-03-02 05:28:55 +00:00
net.c
net.h
netif.c
netif.h
nfs.c	Move pos++ out of the complicated equation, introduced at r240780.	2013-07-01 17:23:13 +00:00
nfsv2.h
nullfs.c
open.c	Provide a means for loaders to control which file system to use. This	2014-07-30 16:08:16 +00:00
pager.c
printf.c	style(9) requires an empty line when function have no local variables.	2014-05-30 10:18:01 +00:00
qdivrem.c	libstand's qdivrem.c assumes that sizeof(int) == sizeof(long), this is not	2014-07-24 19:06:15 +00:00
quad.h	libstand's qdivrem.c assumes that sizeof(int) == sizeof(long), this is not	2014-07-24 19:06:15 +00:00
random.c
rarp.c
read.c
readdir.c
rpc.c
rpc.h
rpcv2.h
saioctl.h
sbrk.c	Set the malloc alignment to 64 bytes on platforms that use the U-Boot API	2014-02-05 22:53:58 +00:00
splitfs.c
stand.h	Provide a means for loaders to control which file system to use. This	2014-07-30 16:08:16 +00:00
stat.c
strcasecmp.c
strdup.c
strerror.c
strtol.c
strtoul.c	Fix includes for use in libstand.	2013-02-19 17:09:23 +00:00
tftp.c	Unbreak zfsloader with LOADER_TFTP_SUPPORT on	2013-10-09 21:33:19 +00:00
tftp.h
twiddle.c
udp.c
ufs.c
write.c
zalloc.c	Set the malloc alignment to 64 bytes on platforms that use the U-Boot API	2014-02-05 22:53:58 +00:00
zalloc_defs.h	Set the malloc alignment to 64 bytes on platforms that use the U-Boot API	2014-02-05 22:53:58 +00:00
zalloc_malloc.c
zalloc_mem.h	Set the malloc alignment to 64 bytes on platforms that use the U-Boot API	2014-02-05 22:53:58 +00:00
zalloc_protos.h