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authorAaron Tomlin <atomlin@redhat.com>2022-05-02 21:51:03 +0100
committerLuis Chamberlain <mcgrof@kernel.org>2022-05-12 10:29:41 -0700
commitc14e522bc76efed6e947cd0ab83a1fac7a7a3ec9 (patch)
treeec105e1b7a1e6b02b7a58f611ecabb40b0ed2f02 /kernel/module
parent80140a81f7f833998d732102eea0fea230b88067 (diff)
module: Make module_flags_taint() accept a module's taints bitmap and usable outside core code
No functional change. The purpose of this patch is to modify module_flags_taint() to accept a module's taints bitmap as a parameter and modifies all users accordingly. Furthermore, it is now possible to access a given module's taint flags data outside of non-essential code yet does remain for internal use only. This is in preparation for module unload taint tracking support. Signed-off-by: Aaron Tomlin <atomlin@redhat.com> Signed-off-by: Luis Chamberlain <mcgrof@kernel.org>
Diffstat (limited to 'kernel/module')
-rw-r--r--kernel/module/internal.h1
-rw-r--r--kernel/module/main.c8
2 files changed, 5 insertions, 4 deletions
diff --git a/kernel/module/internal.h b/kernel/module/internal.h
index 3e23bef5884d..abbd1c5ef264 100644
--- a/kernel/module/internal.h
+++ b/kernel/module/internal.h
@@ -100,6 +100,7 @@ int cmp_name(const void *name, const void *sym);
long module_get_offset(struct module *mod, unsigned int *size, Elf_Shdr *sechdr,
unsigned int section);
char *module_flags(struct module *mod, char *buf);
+size_t module_flags_taint(unsigned long taints, char *buf);
static inline unsigned long kernel_symbol_value(const struct kernel_symbol *sym)
{
diff --git a/kernel/module/main.c b/kernel/module/main.c
index 05a42d8fcd7a..7dbdd098b995 100644
--- a/kernel/module/main.c
+++ b/kernel/module/main.c
@@ -890,13 +890,13 @@ static inline int module_unload_init(struct module *mod)
}
#endif /* CONFIG_MODULE_UNLOAD */
-static size_t module_flags_taint(struct module *mod, char *buf)
+size_t module_flags_taint(unsigned long taints, char *buf)
{
size_t l = 0;
int i;
for (i = 0; i < TAINT_FLAGS_COUNT; i++) {
- if (taint_flags[i].module && test_bit(i, &mod->taints))
+ if (taint_flags[i].module && test_bit(i, &taints))
buf[l++] = taint_flags[i].c_true;
}
@@ -974,7 +974,7 @@ static ssize_t show_taint(struct module_attribute *mattr,
{
size_t l;
- l = module_flags_taint(mk->mod, buffer);
+ l = module_flags_taint(mk->mod->taints, buffer);
buffer[l++] = '\n';
return l;
}
@@ -2993,7 +2993,7 @@ char *module_flags(struct module *mod, char *buf)
mod->state == MODULE_STATE_GOING ||
mod->state == MODULE_STATE_COMING) {
buf[bx++] = '(';
- bx += module_flags_taint(mod, buf + bx);
+ bx += module_flags_taint(mod->taints, buf + bx);
/* Show a - for module-is-being-unloaded */
if (mod->state == MODULE_STATE_GOING)
buf[bx++] = '-';