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ostree-prepare-root as init: exec init from deployment if run as PID1 

This supports running ostree on embedded platforms without an initrd.
Specificially I'm trying to do bringup on an NVidia Tegra based Jetson TK1
dev board.

Closes: #403
Approved by: cgwalters
This commit is contained in:
William Manley 2016-07-18 17:03:11 +01:00 committed by Atomic Bot
parent 1364e6e30d
commit c9551dc231
1 changed files with 14 additions and 7 deletions
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17
src/switchroot/ostree-prepare-root.c
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@ -156,12 +156,10 @@ main(int argc, char *argv[])
int orig_cwd_dfd;
if (argc < 2)
{
fprintf (stderr, "usage: ostree-prepare-root SYSROOT\n");
exit (EXIT_FAILURE);
}
root_mountpoint = "/";
else
root_mountpoint = argv[1];
deploy_path = resolve_deploy_path (root_mountpoint);
/* Create a temporary target for our mounts in the initramfs; this will
@ -304,5 +302,14 @@ main(int argc, char *argv[])
exit (EXIT_FAILURE);
}
if (getpid() == 1)
{
execl ("/sbin/init", "/sbin/init", NULL);
perrorv ("failed to exec init inside ostree");
exit (EXIT_FAILURE);
}
else
{
exit (EXIT_SUCCESS);
}
}