#include <linux/proc_fs.h>
#include <linux/sched.h> /* for cond_resched */
#include <linux/mm.h>
+#include <linux/ctype.h>
#include <asm/sections.h>
#endif
/* These will be re-linked against their real values during the second link stage */
-extern unsigned long kallsyms_addresses[] __attribute__((weak));
-extern unsigned long kallsyms_num_syms __attribute__((weak,section("data")));
-extern u8 kallsyms_names[] __attribute__((weak));
+extern const unsigned long kallsyms_addresses[] __attribute__((weak));
+extern const unsigned long kallsyms_num_syms __attribute__((weak));
+extern const u8 kallsyms_names[] __attribute__((weak));
-extern u8 kallsyms_token_table[] __attribute__((weak));
-extern u16 kallsyms_token_index[] __attribute__((weak));
+extern const u8 kallsyms_token_table[] __attribute__((weak));
+extern const u16 kallsyms_token_index[] __attribute__((weak));
-extern unsigned long kallsyms_markers[] __attribute__((weak));
+extern const unsigned long kallsyms_markers[] __attribute__((weak));
static inline int is_kernel_inittext(unsigned long addr)
{
static unsigned int kallsyms_expand_symbol(unsigned int off, char *result)
{
int len, skipped_first = 0;
- u8 *tptr, *data;
+ const u8 *tptr, *data;
/* get the compressed symbol length from the first symbol byte */
data = &kallsyms_names[off];
* kallsyms array */
static unsigned int get_symbol_offset(unsigned long pos)
{
- u8 *name;
+ const u8 *name;
int i;
/* use the closest marker we have. We have markers every 256 positions,
symbol_end = (unsigned long)_etext;
}
- *symbolsize = symbol_end - symbol_start;
- *offset = addr - symbol_start;
+ if (symbolsize)
+ *symbolsize = symbol_end - symbol_start;
+ if (offset)
+ *offset = addr - symbol_start;
return low;
}
pos = get_symbol_pos(addr, symbolsize, offset);
/* Grab name */
kallsyms_expand_symbol(get_symbol_offset(pos), namebuf);
- *modname = NULL;
+ if (modname)
+ *modname = NULL;
return namebuf;
}
return NULL;
}
-/* Replace "%s" in format with address, or returns -errno. */
-void __print_symbol(const char *fmt, unsigned long address)
+int lookup_symbol_name(unsigned long addr, char *symname)
+{
+ symname[0] = '\0';
+ symname[KSYM_NAME_LEN] = '\0';
+
+ if (is_ksym_addr(addr)) {
+ unsigned long pos;
+
+ pos = get_symbol_pos(addr, NULL, NULL);
+ /* Grab name */
+ kallsyms_expand_symbol(get_symbol_offset(pos), symname);
+ return 0;
+ }
+ /* see if it's in a module */
+ return lookup_module_symbol_name(addr, symname);
+}
+
+int lookup_symbol_attrs(unsigned long addr, unsigned long *size,
+ unsigned long *offset, char *modname, char *name)
+{
+ name[0] = '\0';
+ name[KSYM_NAME_LEN] = '\0';
+
+ if (is_ksym_addr(addr)) {
+ unsigned long pos;
+
+ pos = get_symbol_pos(addr, size, offset);
+ /* Grab name */
+ kallsyms_expand_symbol(get_symbol_offset(pos), name);
+ modname[0] = '\0';
+ return 0;
+ }
+ /* see if it's in a module */
+ return lookup_module_symbol_attrs(addr, size, offset, modname, name);
+}
+
+/* Look up a kernel symbol and return it in a text buffer. */
+int sprint_symbol(char *buffer, unsigned long address)
{
char *modname;
const char *name;
unsigned long offset, size;
char namebuf[KSYM_NAME_LEN+1];
- char buffer[sizeof("%s+%#lx/%#lx [%s]") + KSYM_NAME_LEN +
- 2*(BITS_PER_LONG*3/10) + MODULE_NAME_LEN + 1];
name = kallsyms_lookup(address, &size, &offset, &modname, namebuf);
-
if (!name)
- sprintf(buffer, "0x%lx", address);
+ return sprintf(buffer, "0x%lx", address);
else {
if (modname)
- sprintf(buffer, "%s+%#lx/%#lx [%s]", name, offset,
+ return sprintf(buffer, "%s+%#lx/%#lx [%s]", name, offset,
size, modname);
else
- sprintf(buffer, "%s+%#lx/%#lx", name, offset, size);
+ return sprintf(buffer, "%s+%#lx/%#lx", name, offset, size);
}
+}
+
+/* Look up a kernel symbol and print it to the kernel messages. */
+void __print_symbol(const char *fmt, unsigned long address)
+{
+ char buffer[KSYM_SYMBOL_LEN];
+
+ sprint_symbol(buffer, address);
+
printk(fmt, buffer);
}
struct kallsym_iter
{
loff_t pos;
- struct module *owner;
unsigned long value;
unsigned int nameoff; /* If iterating in core kernel symbols */
char type;
char name[KSYM_NAME_LEN+1];
+ char module_name[MODULE_NAME_LEN + 1];
+ int exported;
};
-/* Only label it "global" if it is exported. */
-static void upcase_if_global(struct kallsym_iter *iter)
-{
- if (is_exported(iter->name, iter->owner))
- iter->type += 'A' - 'a';
-}
-
static int get_ksymbol_mod(struct kallsym_iter *iter)
{
- iter->owner = module_get_kallsym(iter->pos - kallsyms_num_syms,
- &iter->value, &iter->type,
- iter->name, sizeof(iter->name));
- if (iter->owner == NULL)
+ if (module_get_kallsym(iter->pos - kallsyms_num_syms, &iter->value,
+ &iter->type, iter->name, iter->module_name,
+ &iter->exported) < 0)
return 0;
-
- upcase_if_global(iter);
return 1;
}
{
unsigned off = iter->nameoff;
- iter->owner = NULL;
+ iter->module_name[0] = '\0';
iter->value = kallsyms_addresses[iter->pos];
iter->type = kallsyms_get_symbol_type(off);
if (!iter->name[0])
return 0;
- if (iter->owner)
+ if (iter->module_name[0]) {
+ char type;
+
+ /* Label it "global" if it is exported,
+ * "local" if not exported. */
+ type = iter->exported ? toupper(iter->type) :
+ tolower(iter->type);
seq_printf(m, "%0*lx %c %s\t[%s]\n",
(int)(2*sizeof(void*)),
- iter->value, iter->type, iter->name,
- module_name(iter->owner));
- else
+ iter->value, type, iter->name, iter->module_name);
+ } else
seq_printf(m, "%0*lx %c %s\n",
(int)(2*sizeof(void*)),
iter->value, iter->type, iter->name);
return 0;
}
-static struct seq_operations kallsyms_op = {
+static const struct seq_operations kallsyms_op = {
.start = s_start,
.next = s_next,
.stop = s_stop,
return ret;
}
-static int kallsyms_release(struct inode *inode, struct file *file)
-{
- struct seq_file *m = (struct seq_file *)file->private_data;
- kfree(m->private);
- return seq_release(inode, file);
-}
-
-static struct file_operations kallsyms_operations = {
+static const struct file_operations kallsyms_operations = {
.open = kallsyms_open,
.read = seq_read,
.llseek = seq_lseek,
- .release = kallsyms_release,
+ .release = seq_release_private,
};
static int __init kallsyms_init(void)
__initcall(kallsyms_init);
EXPORT_SYMBOL(__print_symbol);
+EXPORT_SYMBOL_GPL(sprint_symbol);
git.samba.org / sfrench / cifs-2.6.git / blobdiff