scripts/genksyms/lex.l

File Facts

System

Linux kernel

Corpus path

scripts/genksyms/lex.l

Extension

.l

Size

8902 bytes

Lines

450

Domain

Support Tooling And Documentation

Bucket

scripts

Inferred role

Support Tooling And Documentation: exported/initcall integration point

Status

integration implementation candidate

Why This File Exists

Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

• Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.
• Exports symbols or registers init work; inspect boot/module ordering and who consumes the exported contract.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• limits.h
• stdbool.h
• stdlib.h
• string.h
• ctype.h
• genksyms.h
• parse.tab.h
• keywords.c

Detected Declarations

• function yylex

Annotated Snippet

if (!source_file) {
        source_file = xstrdup(cur_filename);
        in_source_file = 1;
      } else {
        in_source_file = (strcmp(cur_filename, source_file) == 0);
      }

      goto repeat;
    }

  switch (lexstate)
    {
    case ST_NORMAL:
      APP;
      switch (token)
	{
	case IDENT:
	  {
	    int r = is_reserved_word(yytext, yyleng);
	    if (r >= 0)
	      {
		switch (token = r)
		  {
		  case ATTRIBUTE_KEYW:
		    lexstate = ST_ATTRIBUTE;
		    count = 0;
		    goto repeat;
		  case ASM_KEYW:
		    lexstate = ST_ASM;
		    count = 0;
		    goto repeat;
		  case TYPEOF_KEYW:
		    lexstate = ST_TYPEOF;
		    count = 0;
		    goto repeat;

		  case STRUCT_KEYW:
		  case UNION_KEYW:
		  case ENUM_KEYW:
		    dont_want_brace_phrase = 3;
		    suppress_type_lookup = 2;
		    goto fini;

		  case EXPORT_SYMBOL_KEYW:
		      goto fini;

		  case STATIC_ASSERT_KEYW:
		    lexstate = ST_STATIC_ASSERT;
		    count = 0;
		    goto repeat;
		  }
	      }
	    if (!suppress_type_lookup && !dont_want_type_specifier)
	      {
		if (find_symbol(yytext, SYM_TYPEDEF, 1))
		  token = TYPE;
	      }
	  }
	  break;

	case '[':
	  lexstate = ST_BRACKET;
	  count = 1;
	  goto repeat;

	case '{':
	  if (dont_want_brace_phrase)
	    break;
	  lexstate = ST_BRACE;
	  count = 1;

Annotation

• Immediate include surface: `limits.h`, `stdbool.h`, `stdlib.h`, `string.h`, `ctype.h`, `genksyms.h`, `parse.tab.h`, `keywords.c`.
• Detected declarations: `function yylex`.
• Atlas domain: Support Tooling And Documentation / scripts.
• Implementation status: integration implementation candidate.

Implementation Notes

• This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
• Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
• Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.