Contributors: 3
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Arnaldo Carvalho de Melo |
328 |
97.62% |
4 |
66.67% |
| Jiri Olsa |
7 |
2.08% |
1 |
16.67% |
| Greg Kroah-Hartman |
1 |
0.30% |
1 |
16.67% |
| Total |
336 |
|
6 |
|
// SPDX-License-Identifier: GPL-2.0
#include "symbol/kallsyms.h"
#include <stdio.h>
#include <stdlib.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';
}
/*
* While we find nice hex chars, build a long_val.
* Return number of chars processed.
*/
int hex2u64(const char *ptr, u64 *long_val)
{
char *p;
*long_val = strtoull(ptr, &p, 16);
return p - ptr;
}
int kallsyms__parse(const char *filename, void *arg,
int (*process_symbol)(void *arg, const char *name,
char type, u64 start))
{
char *line = NULL;
size_t n;
int err = -1;
FILE *file = fopen(filename, "r");
if (file == NULL)
goto out_failure;
err = 0;
while (!feof(file)) {
u64 start;
int line_len, len;
char symbol_type;
char *symbol_name;
line_len = getline(&line, &n, file);
if (line_len < 0 || !line)
break;
line[--line_len] = '\0'; /* \n */
len = hex2u64(line, &start);
/* Skip the line if we failed to parse the address. */
if (!len)
continue;
len++;
if (len + 2 >= line_len)
continue;
symbol_type = line[len];
len += 2;
symbol_name = line + len;
len = line_len - len;
if (len >= KSYM_NAME_LEN) {
err = -1;
break;
}
err = process_symbol(arg, symbol_name, symbol_type, start);
if (err)
break;
}
free(line);
fclose(file);
return err;
out_failure:
return -1;
}