Commit graph

14 commits

Author SHA1 Message Date
Daniel Barlow
6971d03520 preinit: check return from write() 2024-01-07 21:24:16 +00:00
Daniel Barlow
a8891461aa use devtmpfs in initramfs
static device nodes don't work with virtio
2023-12-07 20:03:03 +00:00
Daniel Barlow
c3ccee6506 preinit: print errno (in hex, it's easier) for failures 2023-11-05 11:27:57 +00:00
Daniel Barlow
6db982f25f preinit: pause before exiting
as explained in the comment, this is to give us a
chance to see error messages before the kernel panics
2023-11-05 11:27:57 +00:00
Daniel Barlow
86a5224f3c preinit: fix compiler warnings 2023-11-05 11:27:43 +00:00
Daniel Barlow
155a29d9b3 preinit: strip trailing newline(s) on /proc/cmdline 2023-11-05 11:27:34 +00:00
Daniel Barlow
d2f517a4e9 preinit.c: reindent 2023-10-19 21:02:18 +01:00
Daniel Barlow
0f38ee0e9c remove PREINIT_USE_LIBC option as it is now the only option 2023-10-19 18:59:02 +01:00
Daniel Barlow
61dc5beca8 preinit: parse rootfstype from kernel command line 2023-10-19 18:56:09 +01:00
Daniel Barlow
0693cf23d8 preinit: improve error logging for fork_exec 2023-10-12 19:00:57 +01:00
Daniel Barlow
1a369ff3bf preinit: remove no-longer-used mips assembly 2023-10-12 18:57:54 +01:00
Daniel Barlow
6bc45c2b55 preinit: null-terminate argv array for execve 2023-06-22 09:29:44 +01:00
Daniel Barlow
a7e7146887 preinit: disable nolibc
- it stopped working with 22.11->23.05
- linking statically against musl is about 17k, so
  this is costing us 11k or so
2023-06-18 23:04:26 +01:00
Daniel Barlow
5dd0c6e3c0 rewrite preinit as very small C program
By using the kernel "nolibc" header to avoid requiring a C library, we
can bring the initramfs size to around 4k

This does involve a tiny bit of inline mips assembly which I'm not
sure about. gcc seems unwilling to generate the code to load $gp at
function entry of main(), so we do it by hand - but I'd rather find
out why gcc doesn't.
2023-04-15 18:27:39 +01:00