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Date: Wed, 7 Nov 2007 23:10:20 +0300 From: Al Boldi <a1426z@...ab.com> To: linux-kernel@...r.kernel.org Cc: hpa@...or.com, akpm@...ux-foundation.org Subject: Re: [PATCH] init: Introduce rootdir bootparm to select which dir to sys_chroot Al Boldi wrote: > This patch introduces a rootdir kernel boot parameter, which specifies the > path to the kernel sys_chroot boot dir. > > This is useful for systems that have more than one distribution installed > on the same fs/partition. > > > Cc: H. Peter Anvin <hpa@...or.com> > Cc: Andrew Morton <akpm@...ux-foundation.org> > Signed-off-by: Al Boldi <a1426z@...ab.com> > > --- > > --- a/init/do_mounts.c > +++ b/init/do_mounts.c > @@ -252,6 +252,15 @@ __setup("rootflags=", root_data_setup); > __setup("rootfstype=", fs_names_setup); > __setup("rootdelay=", root_delay_setup); > > +static char * __initdata root_dir; > +static int __init root_dir_setup(char *str) > +{ > + root_dir = strcat("./",str); This line is probably using an overloaded function that does not exist. Use this instead: static char __initdata root_dir[128]; static int __init root_dir_setup(char *str) { strcpy(root_dir, "./"); strlcat(root_dir, str, sizeof(root_dir) - strlen(root_dir) - 1); return 1; } > +__setup("rootdir=", root_dir_setup); > + > static void __init get_fs_names(char *page) > { > char *s = page; > @@ -469,6 +478,10 @@ void __init prepare_namespace(void) > mount_root(); > out: > sys_mount(".", "/", NULL, MS_MOVE, NULL); > + > + if(root_dir) > + sys_chdir(root_dir); > + > sys_chroot("."); > security_sb_post_mountroot(); > } Thanks! -- Al - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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