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b8a94bfb33
Rust symbols can become quite long due to namespacing introduced
by modules, types, traits, generics, etc. For instance,
the following code:
pub mod my_module {
pub struct MyType;
pub struct MyGenericType<T>(T);
pub trait MyTrait {
fn my_method() -> u32;
}
impl MyTrait for MyGenericType<MyType> {
fn my_method() -> u32 {
42
}
}
}
generates a symbol of length 96 when using the upcoming v0 mangling scheme:
_RNvXNtCshGpAVYOtgW1_7example9my_moduleINtB2_13MyGenericTypeNtB2_6MyTypeENtB2_7MyTrait9my_method
At the moment, Rust symbols may reach up to 300 in length.
Setting 512 as the maximum seems like a reasonable choice to
keep some headroom.
Reviewed-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Petr Mladek <pmladek@suse.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Co-developed-by: Alex Gaynor <alex.gaynor@gmail.com>
Signed-off-by: Alex Gaynor <alex.gaynor@gmail.com>
Co-developed-by: Wedson Almeida Filho <wedsonaf@google.com>
Signed-off-by: Wedson Almeida Filho <wedsonaf@google.com>
Co-developed-by: Gary Guo <gary@garyguo.net>
Signed-off-by: Gary Guo <gary@garyguo.net>
Co-developed-by: Boqun Feng <boqun.feng@gmail.com>
Signed-off-by: Boqun Feng <boqun.feng@gmail.com>
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
29 lines
618 B
C
29 lines
618 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __TOOLS_KALLSYMS_H_
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#define __TOOLS_KALLSYMS_H_ 1
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#include <elf.h>
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#include <linux/ctype.h>
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#include <linux/types.h>
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#ifndef KSYM_NAME_LEN
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#define KSYM_NAME_LEN 512
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#endif
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static inline u8 kallsyms2elf_binding(char type)
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{
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if (type == 'W')
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return STB_WEAK;
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return isupper(type) ? STB_GLOBAL : STB_LOCAL;
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}
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u8 kallsyms2elf_type(char type);
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bool kallsyms__is_function(char symbol_type);
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int kallsyms__parse(const char *filename, void *arg,
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int (*process_symbol)(void *arg, const char *name,
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char type, u64 start));
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#endif /* __TOOLS_KALLSYMS_H_ */
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