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authorGreg Kroah-Hartman <gregkh@suse.de>2008-09-24 14:46:44 -0700
committerGreg Kroah-Hartman <gregkh@suse.de>2008-10-10 15:31:05 -0700
commit061b1bd394ca8628b7c24eb4658ba3535da4249a (patch)
tree5711de7ffa17f0f5d0084292707872d19e9b19ff /kernel
parentb922df7383749a1c0b7ea64c50fa839263d3816b (diff)
downloadop-kernel-dev-061b1bd394ca8628b7c24eb4658ba3535da4249a.zip
op-kernel-dev-061b1bd394ca8628b7c24eb4658ba3535da4249a.tar.gz
Staging: add TAINT_CRAP for all drivers/staging code
We need to add a flag for all code that is in the drivers/staging/ directory to prevent all other kernel developers from worrying about issues here, and to notify users that the drivers might not be as good as they are normally used to. Based on code from Andreas Gruenbacher and Jeff Mahoney to provide a TAINT flag for the support level of a kernel module in the Novell enterprise kernel release. This is the kernel portion of this feature, the ability for the flag to be set needs to be done in the build process and will happen in a follow-up patch. Cc: Andreas Gruenbacher <agruen@suse.de> Cc: Jeff Mahoney <jeffm@suse.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'kernel')
-rw-r--r--kernel/module.c11
-rw-r--r--kernel/panic.c6
2 files changed, 15 insertions, 2 deletions
diff --git a/kernel/module.c b/kernel/module.c
index 9db1191..152b165 100644
--- a/kernel/module.c
+++ b/kernel/module.c
@@ -1806,6 +1806,7 @@ static noinline struct module *load_module(void __user *umod,
Elf_Ehdr *hdr;
Elf_Shdr *sechdrs;
char *secstrings, *args, *modmagic, *strtab = NULL;
+ char *staging;
unsigned int i;
unsigned int symindex = 0;
unsigned int strindex = 0;
@@ -1960,6 +1961,14 @@ static noinline struct module *load_module(void __user *umod,
goto free_hdr;
}
+ staging = get_modinfo(sechdrs, infoindex, "staging");
+ if (staging) {
+ add_taint_module(mod, TAINT_CRAP);
+ printk(KERN_WARNING "%s: module is from the staging directory,"
+ " the quality is unknown, you have been warned.\n",
+ mod->name);
+ }
+
/* Now copy in args */
args = strndup_user(uargs, ~0UL >> 1);
if (IS_ERR(args)) {
@@ -2556,6 +2565,8 @@ static char *module_flags(struct module *mod, char *buf)
buf[bx++] = 'P';
if (mod->taints & TAINT_FORCED_MODULE)
buf[bx++] = 'F';
+ if (mod->taints & TAINT_CRAP)
+ buf[bx++] = 'C';
/*
* TAINT_FORCED_RMMOD: could be added.
* TAINT_UNSAFE_SMP, TAINT_MACHINE_CHECK, TAINT_BAD_PAGE don't
diff --git a/kernel/panic.c b/kernel/panic.c
index 12c5a0a..98e2047 100644
--- a/kernel/panic.c
+++ b/kernel/panic.c
@@ -155,6 +155,7 @@ EXPORT_SYMBOL(panic);
* 'U' - Userspace-defined naughtiness.
* 'A' - ACPI table overridden.
* 'W' - Taint on warning.
+ * 'C' - modules from drivers/staging are loaded.
*
* The string is overwritten by the next call to print_taint().
*/
@@ -163,7 +164,7 @@ const char *print_tainted(void)
{
static char buf[20];
if (tainted) {
- snprintf(buf, sizeof(buf), "Tainted: %c%c%c%c%c%c%c%c%c%c",
+ snprintf(buf, sizeof(buf), "Tainted: %c%c%c%c%c%c%c%c%c%c%c",
tainted & TAINT_PROPRIETARY_MODULE ? 'P' : 'G',
tainted & TAINT_FORCED_MODULE ? 'F' : ' ',
tainted & TAINT_UNSAFE_SMP ? 'S' : ' ',
@@ -173,7 +174,8 @@ const char *print_tainted(void)
tainted & TAINT_USER ? 'U' : ' ',
tainted & TAINT_DIE ? 'D' : ' ',
tainted & TAINT_OVERRIDDEN_ACPI_TABLE ? 'A' : ' ',
- tainted & TAINT_WARN ? 'W' : ' ');
+ tainted & TAINT_WARN ? 'W' : ' ',
+ tainted & TAINT_CRAP ? 'C' : ' ');
}
else
snprintf(buf, sizeof(buf), "Not tainted");
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