similar to: [PATCH 0/2] supermin: improve handling of memory

Allow an alternate libc, such as dietlibc, to be used for the init binary in the supermin appliance. Rich.

v1 -> v2: - If we split out the init program into a separate init/ directory, that makes it much easier to build against an alternate libc. I tried to build against uClibc, but uClibc requires an entire build chain, which looked like it was going to be a massive ballache. Rich.

Joseph, Please try my modified versions of these patches. These are compile-tested on Fedora and they don't break any existing functionality, but I don't have either urpmi nor a statically-linked xz so I cannot fully test them. I have also fixed detection of zlib (2/3). Rich.

When building the mini initrd, previously we copied the modules into the initrd as-is, so for example if the module was xz-compressed, we copied the foo.ko.xz file to the initrd. This requires that the mini init binary is linked to zlib & lzma, so that it knows how to uncompress these modules when insmoding them at boot time. Also since the init is statically linked, it required _static_

Check early that there are enough free blocks to store each file, erroring out with ENOSPC if not; this avoids slightly more obscure errors later on. --- src/ext2fs-c.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/src/ext2fs-c.c b/src/ext2fs-c.c index f01ca9d..e45980a 100644 --- a/src/ext2fs-c.c +++ b/src/ext2fs-c.c @@ -52,6 +52,9 @@ /* fts.h in glibc is broken,

Use an helper struct for holding the ext2_filsys variable, so that can be used to add more data. --- src/ext2fs-c.c | 77 +++++++++++++++++++++++++++++++--------------------------- 1 file changed, 41 insertions(+), 36 deletions(-) diff --git a/src/ext2fs-c.c b/src/ext2fs-c.c index 70755c9..8eab24c 100644 --- a/src/ext2fs-c.c +++ b/src/ext2fs-c.c @@ -52,6 +52,11 @@ /* fts.h in glibc is broken,

--- .gitignore | 6 +- .gitmodules | 3 - HACKING | 41 +++ Makefile.am | 6 +- README | 7 +- TODO | 61 +--- autobuild.sh | 65 ---- autogen.sh | 12 - configure.ac | 27

No material changes are made. --- Makefile | 10 +- convert.c => convert/convert.c | 803 +--------------------------------------- convert/convert.h | 76 ++++ convert/ext2.c | 791 +++++++++++++++++++++++++++++++++++++++ 4 files changed, 873 insertions(+), 807 deletions(-) rename convert.c => convert/convert.c (74%) create mode

Use the right formatting placeholders, so it gives no warnings also on 32bit platforms. --- src/ext2fs-c.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/src/ext2fs-c.c b/src/ext2fs-c.c index e45980a..cb9282b 100644 --- a/src/ext2fs-c.c +++ b/src/ext2fs-c.c @@ -31,6 +31,7 @@ #include <limits.h> #include <errno.h> #include <assert.h> +#include

The ext2 filesystem on disk format has two ways to store symlinks. For symlinks >= 60 bytes in length, they are stored as files (so-called "slow symlinks"). For shorter symlinks the symlink is stored in the inode ("fast symlinks"). Previously we only created slow symlinks even if there are shorter than 60 bytes. This didn't matter until recently, when a change went

Hello syslinux, Merry Christmas! These patches will make extlinux work with umounted ext2/3/4 filesystem, for example: $ extlinux -i /dev/sdXN or $ extlinux -i file_block Also it can work with something like: $ extlinux /dev/sdXN --reset-adv or $ extlinux file_block --reset-adv We don't use a new option (I planed to use "-d" but it is already in use), it will check whether the

Hello, the following patches should get multidisk access working. The syntax accepted is the following: (hdx,y)/path/to/file where x is the disk number and start at 0 and the y is the partition number starting at 1. So (hd0,1) is the first partition of the first disk. the other accepted syntax is using MBR's 32 bits disk signature so for example: (mbr:0x12345678,2)/foo/bar would address

How can I get a substring based on the index into the string? strM <- c("abcde", "cdefg") ind <- c(1,3,5) I want to use ind to index into the strings so the result is: strMind <- c("ace", "ceg")

v2: - Fixes a number of bugs in corner cases. - Uses a 1M block size to fetch from the underlying plugin. This improves performance considerably. I also tested this much more thoroughly and can't find any more bugs. Rich.

Here's the patch to provide dbgs(). By default it works just like errs(). When -debug-buffer-size=N (N > 0) is set, it buffers output sent to it and dumps it at program termination via a signal handler. Please review. Thanks! -Dave Index: include/llvm/Support/Debug.h =================================================================== ---

Matt asked if xz should really be a filter rather than a plugin. The answer is yes, of course it should be! That's been something in the todo file for a while. The commit converts the xz plugin code into a filter (leaving the plugin around, but deprecating it). plugin: nbdkit xz file.xz filter: nbdkit --filter=xz file file.xz plugin: # can't be done filter: nbdkit

On Dec 17, 2009, at 4:02 PM, David Greene wrote: > Here's the patch to provide dbgs(). By default it works just like > errs(). > When -debug-buffer-size=N (N > 0) is set, it buffers output sent to > it and > dumps it at program termination via a signal handler. > > Please review. Thanks! > > -Dave > > Index:

Obviously for very large files this is going to be a problem, as well as not being very cache efficient. libext2fs can handle writes to parts of files just fine so copy files in blocks. Also demote the "Permission denied" error to a warning, and add some explanatory text telling people not to use sudo. --- src/ext2fs-c.c | 127 +++++++++++++++++++++++++++++++++++----------------------

Turns out Japanese trains are good for coding! In supermin we have a bunch of code to create the libguestfs appliance. It creates it directly using libext2fs (part of e2fsprogs). We can use the same technique to create ext2 virtual disks in nbdkit, which is what this new plugin does. Why a new plugin instead of modifying the floppy plugin? See the 4/4 commit message for an explanation. The

Another interesting thing you can do with this plugin: https://rwmj.wordpress.com/2019/02/19/nbdkit-linuxdisk-plugin/ v2: - Fix inconsistent tab/space. - All 3 plugins now contain a block of text pointing to the other 2 plugins. - TMDIR -> TMPDIR - Unlink the temporary file and other cleanups along error paths. - fclose -> pclose, and check the return value for errors. -