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// SPDX-License-Identifier: GPL-2.0-only
/*
* System call table mapper
*
* (C) 2016 Arnaldo Carvalho de Melo <acme@redhat.com>
*/
#include "syscalltbl.h"
#include <stdlib.h>
#include <asm/bitsperlong.h>
#include <linux/compiler.h>
#include <linux/kernel.h>
#include <linux/zalloc.h>
#include <string.h>
#include "string2.h"
#if __BITS_PER_LONG == 64
#include <asm/syscalls_64.h>
#else
#include <asm/syscalls_32.h>
#endif
const char *syscalltbl__name(int e_machine __maybe_unused, int id)
{
if (id >= 0 && id <= (int)ARRAY_SIZE(syscall_num_to_name))
return syscall_num_to_name[id];
return NULL;
}
struct syscall_cmp_key {
const char *name;
const char *const *tbl;
};
static int syscallcmpname(const void *vkey, const void *ventry)
{
const struct syscall_cmp_key *key = vkey;
const uint16_t *entry = ventry;
return strcmp(key->name, key->tbl[*entry]);
}
int syscalltbl__id(int e_machine __maybe_unused, const char *name)
{
struct syscall_cmp_key key = {
.name = name,
.tbl = syscall_num_to_name,
};
const int *id = bsearch(&key, syscall_sorted_names,
ARRAY_SIZE(syscall_sorted_names),
sizeof(syscall_sorted_names[0]),
syscallcmpname);
return id ? *id : -1;
}
int syscalltbl__num_idx(int e_machine __maybe_unused)
{
return ARRAY_SIZE(syscall_sorted_names);
}
int syscalltbl__id_at_idx(int e_machine __maybe_unused, int idx)
{
return syscall_sorted_names[idx];
}
int syscalltbl__strglobmatch_next(int e_machine __maybe_unused, const char *syscall_glob, int *idx)
{
for (int i = *idx + 1; i < (int)ARRAY_SIZE(syscall_sorted_names); ++i) {
const char *name = syscall_num_to_name[syscall_sorted_names[i]];
if (strglobmatch(name, syscall_glob)) {
*idx = i;
return syscall_sorted_names[i];
}
}
return -1;
}
int syscalltbl__strglobmatch_first(int e_machine, const char *syscall_glob, int *idx)
{
*idx = -1;
return syscalltbl__strglobmatch_next(e_machine, syscall_glob, idx);
}
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