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mkbootfs: Add support for dev nodes

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Add the ability of packaging dev nodes in the CPIO.

Change-Id: Id1c83c8bcd3724de03214788c9af592f9817285f
This commit is contained in:
Vincent Donnefort 2022-12-20 11:25:49 +00:00
parent 7f01774abd
commit c297135302
1 changed files with 10 additions and 3 deletions
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13
mkbootfs/mkbootfs.c
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@ -8,6 +8,7 @@
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/sysmacros.h>
#include <dirent.h>
#include <stdarg.h>
@ -22,7 +23,6 @@
** an explanation of this file format
** - dotfiles are ignored
** - directories named 'root' are ignored
** - device notes, pipes, etc are not supported (error)
*/
static void die(const char* why, ...) {
@ -87,6 +87,10 @@ static void fix_stat(const char *path, struct stat *s)
fs_config(path, is_dir, target_out_path, &s->st_uid, &s->st_gid, &st_mode, &capabilities);
s->st_mode = (typeof(s->st_mode)) st_mode;
}
if (S_ISREG(s->st_mode) || S_ISDIR(s->st_mode) || S_ISLNK(s->st_mode)) {
s->st_rdev = 0;
}
}
static void _eject(struct stat *s, char *out, int olen, char *data, unsigned datasize)
@ -116,8 +120,8 @@ static void _eject(struct stat *s, char *out, int olen, char *data, unsigned dat
datasize,
0, // volmajor
0, // volminor
0, // devmajor
0, // devminor,
major(s->st_rdev),
minor(s->st_rdev),
olen + 1,
0,
out,
@ -268,6 +272,9 @@ static void _archive(char *in, char *out, int ilen, int olen)
size = readlink(in, buf, 1024);
if(size < 0) die("cannot read symlink '%s'", in);
_eject(&s, out, olen, buf, size);
} else if(S_ISBLK(s.st_mode) || S_ISCHR(s.st_mode) ||
S_ISFIFO(s.st_mode) || S_ISSOCK(s.st_mode)) {
_eject(&s, out, olen, NULL, 0);
} else {
die("Unknown '%s' (mode %d)?\n", in, s.st_mode);
}