module: use strstarts()

Impact: minor cleanup.

I'm not going to neaten anyone else's code, but I'm happy to clean up
my own.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

diff --git a/kernel/module.c b/kernel/module.c
index 1a9a398..f6e08b7 100644 (file)
--- a/kernel/module.c
+++ b/kernel/module.c
@@ -1673,8 +1673,7 @@ static void layout_sections(struct module *mod,
                        if ((s->sh_flags & masks[m][0]) != masks[m][0]
                            || (s->sh_flags & masks[m][1])
                            || s->sh_entsize != ~0UL
-                           || strncmp(secstrings + s->sh_name,
-                                      ".init", 5) == 0)
+                           || strstarts(secstrings + s->sh_name, ".init"))
                                continue;
                        s->sh_entsize = get_offset(mod, &mod->core_size, s, i);
                        DEBUGP("\t%s\n", secstrings + s->sh_name);
@@ -1691,8 +1690,7 @@ static void layout_sections(struct module *mod,
                        if ((s->sh_flags & masks[m][0]) != masks[m][0]
                            || (s->sh_flags & masks[m][1])
                            || s->sh_entsize != ~0UL
-                           || strncmp(secstrings + s->sh_name,
-                                      ".init", 5) != 0)
+                           || !strstarts(secstrings + s->sh_name, ".init"))
                                continue;
                        s->sh_entsize = (get_offset(mod, &mod->init_size, s, i)
                                         | INIT_OFFSET_MASK);
@@ -1825,8 +1823,7 @@ static char elf_type(const Elf_Sym *sym,
                else
                        return 'b';
        }
-       if (strncmp(secstrings + sechdrs[sym->st_shndx].sh_name,
-                   ".debug", strlen(".debug")) == 0)
+       if (strstarts(secstrings + sechdrs[sym->st_shndx].sh_name, ".debug"))
                return 'n';
        return '?';
 }
@@ -1952,7 +1949,7 @@ static noinline struct module *load_module(void __user *umod,
                }
 #ifndef CONFIG_MODULE_UNLOAD
                /* Don't load .exit sections */
-               if (strncmp(secstrings+sechdrs[i].sh_name, ".exit", 5) == 0)
+               if (strstarts(secstrings+sechdrs[i].sh_name, ".exit"))
                        sechdrs[i].sh_flags &= ~(unsigned long)SHF_ALLOC;
 #endif
                /* Don't keep __versions around; it's just for loading. */