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// SPDX-License-Identifier: GPL-2.0
#include "symbol/kallsyms.h"
#include "api/io.h"
#include <stdio.h>
#include <sys/stat.h>
#include <fcntl.h>
u8 kallsyms2elf_type(char type)
{
type = tolower(type);
return (type == 't' || type == 'w') ? STT_FUNC : STT_OBJECT;
}
bool kallsyms__is_function(char symbol_type)
{
symbol_type = toupper(symbol_type);
return symbol_type == 'T' || symbol_type == 'W';
}
static void read_to_eol(struct io *io)
{
int ch;
for (;;) {
ch = io__get_char(io);
if (ch < 0 || ch == '\n')
return;
}
}
int kallsyms__parse(const char *filename, void *arg,
int (*process_symbol)(void *arg, const char *name,
char type, u64 start))
{
struct io io;
char bf[BUFSIZ];
int err;
io.fd = open(filename, O_RDONLY, 0);
if (io.fd < 0)
return -1;
io__init(&io, io.fd, bf, sizeof(bf));
err = 0;
while (!io.eof) {
__u64 start;
int ch;
size_t i;
char symbol_type;
char symbol_name[KSYM_NAME_LEN + 1];
if (io__get_hex(&io, &start) != ' ') {
read_to_eol(&io);
continue;
}
symbol_type = io__get_char(&io);
if (io__get_char(&io) != ' ') {
read_to_eol(&io);
continue;
}
for (i = 0; i < sizeof(symbol_name); i++) {
ch = io__get_char(&io);
if (ch < 0 || ch == '\n')
break;
symbol_name[i] = ch;
}
symbol_name[i] = '\0';
err = process_symbol(arg, symbol_name, symbol_type, start);
if (err)
break;
}
close(io.fd);
return err;
}
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