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| author |   Aaron Tomlin <atomlin@redhat.com> | 2022-07-14 16:39:31 +0100 |
|---|---|---|
| committer |   Luis Chamberlain <mcgrof@kernel.org> | 2022-07-14 17:40:23 -0700 |
| commit | 17dd25c29cda98c370f8d5a4ae3daee33fac1669 (patch) | |
| tree | 3afab20c095cdd90e31fdbdc3699693b944e2d04 /kernel/module | |
| parent | module: Move module's Kconfig items in kernel/module/ (diff) | |
| download | linux-dev-17dd25c29cda98c370f8d5a4ae3daee33fac1669.tar.xz linux-dev-17dd25c29cda98c370f8d5a4ae3daee33fac1669.zip | |
module: Modify module_flags() to accept show_state argument
No functional change.
With this patch a given module's state information (i.e. 'mod->state')
can be omitted from the specified buffer. Please note that this is in
preparation to include the last unloaded module's taint flag(s),
if available.
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.h | 2 | ||||
| -rw-r--r-- | kernel/module/main.c | 11 | ||||
| -rw-r--r-- | kernel/module/procfs.c | 2 |
3 files changed, 9 insertions, 6 deletions
diff --git a/kernel/module/internal.h b/kernel/module/internal.h index ec104c2950c3..680d980a4fb2 100644 --- a/kernel/module/internal.h +++ b/kernel/module/internal.h @@ -103,7 +103,7 @@ struct module *find_module_all(const char *name, size_t len, bool even_unformed) 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); +char *module_flags(struct module *mod, char *buf, bool show_state); size_t module_flags_taint(unsigned long taints, char *buf); static inline void module_assert_mutex_or_preempt(void) diff --git a/kernel/module/main.c b/kernel/module/main.c index d34227ca3932..b6e3dfd2068c 100644 --- a/kernel/module/main.c +++ b/kernel/module/main.c @@ -2979,24 +2979,27 @@ static void cfi_cleanup(struct module *mod) } /* Keep in sync with MODULE_FLAGS_BUF_SIZE !!! */ -char *module_flags(struct module *mod, char *buf) +char *module_flags(struct module *mod, char *buf, bool show_state) { int bx = 0; BUG_ON(mod->state == MODULE_STATE_UNFORMED); + if (!mod->taints && !show_state) + goto out; if (mod->taints || mod->state == MODULE_STATE_GOING || mod->state == MODULE_STATE_COMING) { buf[bx++] = '('; bx += module_flags_taint(mod->taints, buf + bx); /* Show a - for module-is-being-unloaded */ - if (mod->state == MODULE_STATE_GOING) + if (mod->state == MODULE_STATE_GOING && show_state) buf[bx++] = '-'; /* Show a + for module-is-being-loaded */ - if (mod->state == MODULE_STATE_COMING) + if (mod->state == MODULE_STATE_COMING && show_state) buf[bx++] = '+'; buf[bx++] = ')'; } +out: buf[bx] = '\0'; return buf; @@ -3129,7 +3132,7 @@ void print_modules(void) list_for_each_entry_rcu(mod, &modules, list) { if (mod->state == MODULE_STATE_UNFORMED) continue; - pr_cont(" %s%s", mod->name, module_flags(mod, buf)); + pr_cont(" %s%s", mod->name, module_flags(mod, buf, true)); } print_unloaded_tainted_modules(); diff --git a/kernel/module/procfs.c b/kernel/module/procfs.c index 9a8f4f0f6329..cf5b9f1e6ec4 100644 --- a/kernel/module/procfs.c +++ b/kernel/module/procfs.c @@ -91,7 +91,7 @@ static int m_show(struct seq_file *m, void *p) /* Taints info */ if (mod->taints) - seq_printf(m, " %s", module_flags(mod, buf)); + seq_printf(m, " %s", module_flags(mod, buf, true)); seq_puts(m, "\n"); return 0; |