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@@ -1,580 +0,0 @@
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-/*
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- * docproc is a simple preprocessor for the template files
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- * used as placeholders for the kernel internal documentation.
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- * docproc is used for documentation-frontend and
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- * dependency-generator.
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- * The two usages have in common that they require
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- * some knowledge of the .tmpl syntax, therefore they
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- * are kept together.
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- *
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- * documentation-frontend
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- * Scans the template file and call kernel-doc for
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- * all occurrences of ![EIF]file
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- * Beforehand each referenced file is scanned for
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- * any symbols that are exported via these macros:
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- * EXPORT_SYMBOL(), EXPORT_SYMBOL_GPL(), &
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- * EXPORT_SYMBOL_GPL_FUTURE()
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- * This is used to create proper -function and
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- * -nofunction arguments in calls to kernel-doc.
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- * Usage: docproc doc file.tmpl
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- *
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- * dependency-generator:
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- * Scans the template file and list all files
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- * referenced in a format recognized by make.
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- * Usage: docproc depend file.tmpl
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- * Writes dependency information to stdout
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- * in the following format:
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- * file.tmpl src.c src2.c
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- * The filenames are obtained from the following constructs:
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- * !Efilename
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- * !Ifilename
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- * !Dfilename
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- * !Ffilename
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- * !Pfilename
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- *
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- */
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-
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-#define _GNU_SOURCE
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-#include <stdio.h>
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-#include <stdlib.h>
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-#include <string.h>
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-#include <ctype.h>
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-#include <unistd.h>
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-#include <limits.h>
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-#include <errno.h>
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-#include <sys/types.h>
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-#include <sys/wait.h>
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-
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-/* exitstatus is used to keep track of any failing calls to kernel-doc,
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- * but execution continues. */
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-int exitstatus = 0;
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-
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-typedef void DFL(char *);
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-DFL *defaultline;
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-
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-typedef void FILEONLY(char * file);
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-FILEONLY *internalfunctions;
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-FILEONLY *externalfunctions;
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-FILEONLY *symbolsonly;
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-FILEONLY *findall;
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-
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-typedef void FILELINE(char * file, char * line);
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-FILELINE * singlefunctions;
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-FILELINE * entity_system;
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-FILELINE * docsection;
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-
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-#define MAXLINESZ 2048
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-#define MAXFILES 250
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-#define KERNELDOCPATH "scripts/"
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-#define KERNELDOC "kernel-doc"
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-#define DOCBOOK "-docbook"
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-#define LIST "-list"
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-#define FUNCTION "-function"
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-#define NOFUNCTION "-nofunction"
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-#define NODOCSECTIONS "-no-doc-sections"
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-#define SHOWNOTFOUND "-show-not-found"
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-
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-static char *srctree, *kernsrctree;
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-
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-static char **all_list = NULL;
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-static int all_list_len = 0;
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-
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-static void consume_symbol(const char *sym)
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-{
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- int i;
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-
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- for (i = 0; i < all_list_len; i++) {
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- if (!all_list[i])
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- continue;
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- if (strcmp(sym, all_list[i]))
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- continue;
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- all_list[i] = NULL;
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- break;
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- }
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-}
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-
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-static void usage (void)
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-{
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- fprintf(stderr, "Usage: docproc {doc|depend} file\n");
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- fprintf(stderr, "Input is read from file.tmpl. Output is sent to stdout\n");
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- fprintf(stderr, "doc: frontend when generating kernel documentation\n");
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- fprintf(stderr, "depend: generate list of files referenced within file\n");
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- fprintf(stderr, "Environment variable SRCTREE: absolute path to sources.\n");
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- fprintf(stderr, " KBUILD_SRC: absolute path to kernel source tree.\n");
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-}
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-
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-/*
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- * Execute kernel-doc with parameters given in svec
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- */
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-static void exec_kernel_doc(char **svec)
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-{
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- pid_t pid;
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- int ret;
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- char real_filename[PATH_MAX + 1];
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- /* Make sure output generated so far are flushed */
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- fflush(stdout);
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- switch (pid=fork()) {
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- case -1:
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- perror("fork");
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- exit(1);
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- case 0:
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- memset(real_filename, 0, sizeof(real_filename));
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- strncat(real_filename, kernsrctree, PATH_MAX);
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- strncat(real_filename, "/" KERNELDOCPATH KERNELDOC,
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- PATH_MAX - strlen(real_filename));
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- execvp(real_filename, svec);
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- fprintf(stderr, "exec ");
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- perror(real_filename);
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- exit(1);
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- default:
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- waitpid(pid, &ret ,0);
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- }
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- if (WIFEXITED(ret))
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- exitstatus |= WEXITSTATUS(ret);
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- else
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- exitstatus = 0xff;
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-}
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-
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-/* Types used to create list of all exported symbols in a number of files */
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-struct symbols
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-{
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- char *name;
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-};
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-
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-struct symfile
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-{
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- char *filename;
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- struct symbols *symbollist;
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- int symbolcnt;
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-};
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-
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-struct symfile symfilelist[MAXFILES];
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-int symfilecnt = 0;
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-
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-static void add_new_symbol(struct symfile *sym, char * symname)
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-{
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- sym->symbollist =
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- realloc(sym->symbollist, (sym->symbolcnt + 1) * sizeof(char *));
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- sym->symbollist[sym->symbolcnt++].name = strdup(symname);
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-}
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-
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-/* Add a filename to the list */
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-static struct symfile * add_new_file(char * filename)
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-{
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- symfilelist[symfilecnt++].filename = strdup(filename);
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- return &symfilelist[symfilecnt - 1];
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-}
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-
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-/* Check if file already are present in the list */
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-static struct symfile * filename_exist(char * filename)
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-{
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- int i;
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- for (i=0; i < symfilecnt; i++)
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- if (strcmp(symfilelist[i].filename, filename) == 0)
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- return &symfilelist[i];
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- return NULL;
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-}
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-
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-/*
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- * List all files referenced within the template file.
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- * Files are separated by tabs.
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- */
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-static void adddep(char * file) { printf("\t%s", file); }
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-static void adddep2(char * file, char * line) { line = line; adddep(file); }
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-static void noaction(char * line) { line = line; }
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-static void noaction2(char * file, char * line) { file = file; line = line; }
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-
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-/* Echo the line without further action */
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-static void printline(char * line) { printf("%s", line); }
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-
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-/*
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- * Find all symbols in filename that are exported with EXPORT_SYMBOL &
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- * EXPORT_SYMBOL_GPL (& EXPORT_SYMBOL_GPL_FUTURE implicitly).
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- * All symbols located are stored in symfilelist.
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- */
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-static void find_export_symbols(char * filename)
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-{
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- FILE * fp;
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- struct symfile *sym;
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- char line[MAXLINESZ];
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- if (filename_exist(filename) == NULL) {
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- char real_filename[PATH_MAX + 1];
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- memset(real_filename, 0, sizeof(real_filename));
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- strncat(real_filename, srctree, PATH_MAX);
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- strncat(real_filename, "/", PATH_MAX - strlen(real_filename));
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- strncat(real_filename, filename,
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- PATH_MAX - strlen(real_filename));
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- sym = add_new_file(filename);
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- fp = fopen(real_filename, "r");
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- if (fp == NULL) {
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- fprintf(stderr, "docproc: ");
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- perror(real_filename);
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- exit(1);
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- }
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- while (fgets(line, MAXLINESZ, fp)) {
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- char *p;
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- char *e;
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- if (((p = strstr(line, "EXPORT_SYMBOL_GPL")) != NULL) ||
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- ((p = strstr(line, "EXPORT_SYMBOL")) != NULL)) {
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- /* Skip EXPORT_SYMBOL{_GPL} */
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- while (isalnum(*p) || *p == '_')
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- p++;
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- /* Remove parentheses & additional whitespace */
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- while (isspace(*p))
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- p++;
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- if (*p != '(')
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- continue; /* Syntax error? */
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- else
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- p++;
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- while (isspace(*p))
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- p++;
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- e = p;
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- while (isalnum(*e) || *e == '_')
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- e++;
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- *e = '\0';
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- add_new_symbol(sym, p);
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- }
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- }
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- fclose(fp);
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- }
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-}
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-
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-/*
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- * Document all external or internal functions in a file.
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- * Call kernel-doc with following parameters:
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- * kernel-doc -docbook -nofunction function_name1 filename
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- * Function names are obtained from all the src files
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- * by find_export_symbols.
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- * intfunc uses -nofunction
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- * extfunc uses -function
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- */
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-static void docfunctions(char * filename, char * type)
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-{
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- int i,j;
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- int symcnt = 0;
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- int idx = 0;
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- char **vec;
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-
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- for (i=0; i <= symfilecnt; i++)
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- symcnt += symfilelist[i].symbolcnt;
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- vec = malloc((2 + 2 * symcnt + 3) * sizeof(char *));
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- if (vec == NULL) {
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- perror("docproc: ");
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- exit(1);
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- }
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- vec[idx++] = KERNELDOC;
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- vec[idx++] = DOCBOOK;
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- vec[idx++] = NODOCSECTIONS;
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- for (i=0; i < symfilecnt; i++) {
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- struct symfile * sym = &symfilelist[i];
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- for (j=0; j < sym->symbolcnt; j++) {
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- vec[idx++] = type;
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- consume_symbol(sym->symbollist[j].name);
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- vec[idx++] = sym->symbollist[j].name;
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- }
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- }
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- vec[idx++] = filename;
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- vec[idx] = NULL;
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- printf("<!-- %s -->\n", filename);
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- exec_kernel_doc(vec);
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- fflush(stdout);
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- free(vec);
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-}
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-static void intfunc(char * filename) { docfunctions(filename, NOFUNCTION); }
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-static void extfunc(char * filename) { docfunctions(filename, FUNCTION); }
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-
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-/*
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- * Document specific function(s) in a file.
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- * Call kernel-doc with the following parameters:
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- * kernel-doc -docbook -function function1 [-function function2]
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- */
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-static void singfunc(char * filename, char * line)
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-{
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- char *vec[200]; /* Enough for specific functions */
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- int i, idx = 0;
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- int startofsym = 1;
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- vec[idx++] = KERNELDOC;
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- vec[idx++] = DOCBOOK;
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- vec[idx++] = SHOWNOTFOUND;
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-
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- /* Split line up in individual parameters preceded by FUNCTION */
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- for (i=0; line[i]; i++) {
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- if (isspace(line[i])) {
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- line[i] = '\0';
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- startofsym = 1;
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- continue;
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- }
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- if (startofsym) {
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- startofsym = 0;
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- vec[idx++] = FUNCTION;
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- vec[idx++] = &line[i];
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- }
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- }
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- for (i = 0; i < idx; i++) {
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- if (strcmp(vec[i], FUNCTION))
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- continue;
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- consume_symbol(vec[i + 1]);
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- }
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- vec[idx++] = filename;
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- vec[idx] = NULL;
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- exec_kernel_doc(vec);
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-}
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-
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-/*
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- * Insert specific documentation section from a file.
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- * Call kernel-doc with the following parameters:
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- * kernel-doc -docbook -function "doc section" filename
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- */
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-static void docsect(char *filename, char *line)
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-{
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- /* kerneldoc -docbook -show-not-found -function "section" file NULL */
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- char *vec[7];
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- char *s;
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-
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- for (s = line; *s; s++)
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- if (*s == '\n')
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- *s = '\0';
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-
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- if (asprintf(&s, "DOC: %s", line) < 0) {
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- perror("asprintf");
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- exit(1);
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- }
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- consume_symbol(s);
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- free(s);
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-
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- vec[0] = KERNELDOC;
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- vec[1] = DOCBOOK;
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- vec[2] = SHOWNOTFOUND;
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- vec[3] = FUNCTION;
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- vec[4] = line;
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- vec[5] = filename;
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- vec[6] = NULL;
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- exec_kernel_doc(vec);
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-}
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-
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-static void find_all_symbols(char *filename)
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-{
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- char *vec[4]; /* kerneldoc -list file NULL */
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- pid_t pid;
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- int ret, i, count, start;
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- char real_filename[PATH_MAX + 1];
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- int pipefd[2];
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- char *data, *str;
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- size_t data_len = 0;
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-
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- vec[0] = KERNELDOC;
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- vec[1] = LIST;
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- vec[2] = filename;
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- vec[3] = NULL;
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-
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- if (pipe(pipefd)) {
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- perror("pipe");
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- exit(1);
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- }
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-
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- switch (pid=fork()) {
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- case -1:
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- perror("fork");
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- exit(1);
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- case 0:
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- close(pipefd[0]);
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- dup2(pipefd[1], 1);
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- memset(real_filename, 0, sizeof(real_filename));
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- strncat(real_filename, kernsrctree, PATH_MAX);
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- strncat(real_filename, "/" KERNELDOCPATH KERNELDOC,
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- PATH_MAX - strlen(real_filename));
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- execvp(real_filename, vec);
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- fprintf(stderr, "exec ");
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- perror(real_filename);
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- exit(1);
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- default:
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- close(pipefd[1]);
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- data = malloc(4096);
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- do {
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- while ((ret = read(pipefd[0],
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- data + data_len,
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- 4096)) > 0) {
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- data_len += ret;
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- data = realloc(data, data_len + 4096);
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- }
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- } while (ret == -EAGAIN);
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- if (ret != 0) {
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- perror("read");
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- exit(1);
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- }
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- waitpid(pid, &ret ,0);
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- }
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- if (WIFEXITED(ret))
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- exitstatus |= WEXITSTATUS(ret);
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- else
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- exitstatus = 0xff;
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-
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- count = 0;
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- /* poor man's strtok, but with counting */
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- for (i = 0; i < data_len; i++) {
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- if (data[i] == '\n') {
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- count++;
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- data[i] = '\0';
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- }
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- }
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- start = all_list_len;
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- all_list_len += count;
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- all_list = realloc(all_list, sizeof(char *) * all_list_len);
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- str = data;
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- for (i = 0; i < data_len && start != all_list_len; i++) {
|
|
|
- if (data[i] == '\0') {
|
|
|
- all_list[start] = str;
|
|
|
- str = data + i + 1;
|
|
|
- start++;
|
|
|
- }
|
|
|
- }
|
|
|
-}
|
|
|
-
|
|
|
-/*
|
|
|
- * Parse file, calling action specific functions for:
|
|
|
- * 1) Lines containing !E
|
|
|
- * 2) Lines containing !I
|
|
|
- * 3) Lines containing !D
|
|
|
- * 4) Lines containing !F
|
|
|
- * 5) Lines containing !P
|
|
|
- * 6) Lines containing !C
|
|
|
- * 7) Default lines - lines not matching the above
|
|
|
- */
|
|
|
-static void parse_file(FILE *infile)
|
|
|
-{
|
|
|
- char line[MAXLINESZ];
|
|
|
- char * s;
|
|
|
- while (fgets(line, MAXLINESZ, infile)) {
|
|
|
- if (line[0] == '!') {
|
|
|
- s = line + 2;
|
|
|
- switch (line[1]) {
|
|
|
- case 'E':
|
|
|
- while (*s && !isspace(*s)) s++;
|
|
|
- *s = '\0';
|
|
|
- externalfunctions(line+2);
|
|
|
- break;
|
|
|
- case 'I':
|
|
|
- while (*s && !isspace(*s)) s++;
|
|
|
- *s = '\0';
|
|
|
- internalfunctions(line+2);
|
|
|
- break;
|
|
|
- case 'D':
|
|
|
- while (*s && !isspace(*s)) s++;
|
|
|
- *s = '\0';
|
|
|
- symbolsonly(line+2);
|
|
|
- break;
|
|
|
- case 'F':
|
|
|
- /* filename */
|
|
|
- while (*s && !isspace(*s)) s++;
|
|
|
- *s++ = '\0';
|
|
|
- /* function names */
|
|
|
- while (isspace(*s))
|
|
|
- s++;
|
|
|
- singlefunctions(line +2, s);
|
|
|
- break;
|
|
|
- case 'P':
|
|
|
- /* filename */
|
|
|
- while (*s && !isspace(*s)) s++;
|
|
|
- *s++ = '\0';
|
|
|
- /* DOC: section name */
|
|
|
- while (isspace(*s))
|
|
|
- s++;
|
|
|
- docsection(line + 2, s);
|
|
|
- break;
|
|
|
- case 'C':
|
|
|
- while (*s && !isspace(*s)) s++;
|
|
|
- *s = '\0';
|
|
|
- if (findall)
|
|
|
- findall(line+2);
|
|
|
- break;
|
|
|
- default:
|
|
|
- defaultline(line);
|
|
|
- }
|
|
|
- } else {
|
|
|
- defaultline(line);
|
|
|
- }
|
|
|
- }
|
|
|
- fflush(stdout);
|
|
|
-}
|
|
|
-
|
|
|
-
|
|
|
-int main(int argc, char *argv[])
|
|
|
-{
|
|
|
- FILE * infile;
|
|
|
- int i;
|
|
|
-
|
|
|
- srctree = getenv("SRCTREE");
|
|
|
- if (!srctree)
|
|
|
- srctree = getcwd(NULL, 0);
|
|
|
- kernsrctree = getenv("KBUILD_SRC");
|
|
|
- if (!kernsrctree || !*kernsrctree)
|
|
|
- kernsrctree = srctree;
|
|
|
- if (argc != 3) {
|
|
|
- usage();
|
|
|
- exit(1);
|
|
|
- }
|
|
|
- /* Open file, exit on error */
|
|
|
- infile = fopen(argv[2], "r");
|
|
|
- if (infile == NULL) {
|
|
|
- fprintf(stderr, "docproc: ");
|
|
|
- perror(argv[2]);
|
|
|
- exit(2);
|
|
|
- }
|
|
|
-
|
|
|
- if (strcmp("doc", argv[1]) == 0) {
|
|
|
- /* Need to do this in two passes.
|
|
|
- * First pass is used to collect all symbols exported
|
|
|
- * in the various files;
|
|
|
- * Second pass generate the documentation.
|
|
|
- * This is required because some functions are declared
|
|
|
- * and exported in different files :-((
|
|
|
- */
|
|
|
- /* Collect symbols */
|
|
|
- defaultline = noaction;
|
|
|
- internalfunctions = find_export_symbols;
|
|
|
- externalfunctions = find_export_symbols;
|
|
|
- symbolsonly = find_export_symbols;
|
|
|
- singlefunctions = noaction2;
|
|
|
- docsection = noaction2;
|
|
|
- findall = find_all_symbols;
|
|
|
- parse_file(infile);
|
|
|
-
|
|
|
- /* Rewind to start from beginning of file again */
|
|
|
- fseek(infile, 0, SEEK_SET);
|
|
|
- defaultline = printline;
|
|
|
- internalfunctions = intfunc;
|
|
|
- externalfunctions = extfunc;
|
|
|
- symbolsonly = printline;
|
|
|
- singlefunctions = singfunc;
|
|
|
- docsection = docsect;
|
|
|
- findall = NULL;
|
|
|
-
|
|
|
- parse_file(infile);
|
|
|
-
|
|
|
- for (i = 0; i < all_list_len; i++) {
|
|
|
- if (!all_list[i])
|
|
|
- continue;
|
|
|
- fprintf(stderr, "Warning: didn't use docs for %s\n",
|
|
|
- all_list[i]);
|
|
|
- }
|
|
|
- } else if (strcmp("depend", argv[1]) == 0) {
|
|
|
- /* Create first part of dependency chain
|
|
|
- * file.tmpl */
|
|
|
- printf("%s\t", argv[2]);
|
|
|
- defaultline = noaction;
|
|
|
- internalfunctions = adddep;
|
|
|
- externalfunctions = adddep;
|
|
|
- symbolsonly = adddep;
|
|
|
- singlefunctions = adddep2;
|
|
|
- docsection = adddep2;
|
|
|
- findall = adddep;
|
|
|
- parse_file(infile);
|
|
|
- printf("\n");
|
|
|
- } else {
|
|
|
- fprintf(stderr, "Unknown option: %s\n", argv[1]);
|
|
|
- exit(1);
|
|
|
- }
|
|
|
- fclose(infile);
|
|
|
- fflush(stdout);
|
|
|
- return exitstatus;
|
|
|
-}
|