diff options
Diffstat (limited to 'scripts/basic')
| -rw-r--r-- | scripts/basic/.gitignore | 2 | ||||
| -rw-r--r-- | scripts/basic/Makefile | 3 | ||||
| -rw-r--r-- | scripts/basic/docproc.c | 583 |
3 files changed, 1 insertions, 587 deletions
diff --git a/scripts/basic/.gitignore b/scripts/basic/.gitignore index bf8b199ec598..a776371a3502 100644 --- a/scripts/basic/.gitignore +++ b/scripts/basic/.gitignore @@ -1,3 +1 @@ -hash fixdep -docproc diff --git a/scripts/basic/Makefile b/scripts/basic/Makefile index 4c324a1f1e0e..4fcef87bb875 100644 --- a/scripts/basic/Makefile +++ b/scripts/basic/Makefile @@ -7,9 +7,8 @@ # .config is included by main Makefile. # --------------------------------------------------------------------------- # fixdep: Used to generate dependency information during build process -# docproc: Used in Documentation/DocBook -hostprogs-y := fixdep docproc +hostprogs-y := fixdep always := $(hostprogs-y) # fixdep is needed to compile other host programs diff --git a/scripts/basic/docproc.c b/scripts/basic/docproc.c deleted file mode 100644 index 98dec87974d0..000000000000 --- a/scripts/basic/docproc.c +++ /dev/null @@ -1,583 +0,0 @@ -/* - * docproc is a simple preprocessor for the template files - * used as placeholders for the kernel internal documentation. - * docproc is used for documentation-frontend and - * dependency-generator. - * The two usages have in common that they require - * some knowledge of the .tmpl syntax, therefore they - * are kept together. - * - * documentation-frontend - * Scans the template file and call kernel-doc for - * all occurrences of ![EIF]file - * Beforehand each referenced file is scanned for - * any symbols that are exported via these macros: - * EXPORT_SYMBOL(), EXPORT_SYMBOL_GPL(), & - * EXPORT_SYMBOL_GPL_FUTURE() - * This is used to create proper -function and - * -nofunction arguments in calls to kernel-doc. - * Usage: docproc doc file.tmpl - * - * dependency-generator: - * Scans the template file and list all files - * referenced in a format recognized by make. - * Usage: docproc depend file.tmpl - * Writes dependency information to stdout - * in the following format: - * file.tmpl src.c src2.c - * The filenames are obtained from the following constructs: - * !Efilename - * !Ifilename - * !Dfilename - * !Ffilename - * !Pfilename - * - */ - -#define _GNU_SOURCE -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <ctype.h> -#include <unistd.h> -#include <limits.h> -#include <errno.h> -#include <sys/types.h> -#include <sys/wait.h> - -/* exitstatus is used to keep track of any failing calls to kernel-doc, - * but execution continues. */ -int exitstatus = 0; - -typedef void DFL(char *); -DFL *defaultline; - -typedef void FILEONLY(char * file); -FILEONLY *internalfunctions; -FILEONLY *externalfunctions; -FILEONLY *symbolsonly; -FILEONLY *findall; - -typedef void FILELINE(char * file, char * line); -FILELINE * singlefunctions; -FILELINE * entity_system; -FILELINE * docsection; - -#define MAXLINESZ 2048 -#define MAXFILES 250 -#define KERNELDOCPATH "scripts/" -#define KERNELDOC "kernel-doc" -#define DOCBOOK "-docbook" -#define LIST "-list" -#define FUNCTION "-function" -#define NOFUNCTION "-nofunction" -#define NODOCSECTIONS "-no-doc-sections" - -static char *srctree, *kernsrctree; - -static char **all_list = NULL; -static int all_list_len = 0; - -static void consume_symbol(const char *sym) -{ - int i; - - for (i = 0; i < all_list_len; i++) { - if (!all_list[i]) - continue; - if (strcmp(sym, all_list[i])) - continue; - all_list[i] = NULL; - break; - } -} - -static void usage (void) -{ - fprintf(stderr, "Usage: docproc {doc|depend} file\n"); - fprintf(stderr, "Input is read from file.tmpl. Output is sent to stdout\n"); - fprintf(stderr, "doc: frontend when generating kernel documentation\n"); - fprintf(stderr, "depend: generate list of files referenced within file\n"); - fprintf(stderr, "Environment variable SRCTREE: absolute path to sources.\n"); - fprintf(stderr, " KBUILD_SRC: absolute path to kernel source tree.\n"); -} - -/* - * Execute kernel-doc with parameters given in svec - */ -static void exec_kernel_doc(char **svec) -{ - pid_t pid; - int ret; - char real_filename[PATH_MAX + 1]; - /* Make sure output generated so far are flushed */ - fflush(stdout); - switch (pid=fork()) { - case -1: - perror("fork"); - exit(1); - case 0: - memset(real_filename, 0, sizeof(real_filename)); - strncat(real_filename, kernsrctree, PATH_MAX); - strncat(real_filename, "/" KERNELDOCPATH KERNELDOC, - PATH_MAX - strlen(real_filename)); - execvp(real_filename, svec); - fprintf(stderr, "exec "); - perror(real_filename); - exit(1); - default: - waitpid(pid, &ret ,0); - } - if (WIFEXITED(ret)) - exitstatus |= WEXITSTATUS(ret); - else - exitstatus = 0xff; -} - -/* Types used to create list of all exported symbols in a number of files */ -struct symbols -{ - char *name; -}; - -struct symfile -{ - char *filename; - struct symbols *symbollist; - int symbolcnt; -}; - -struct symfile symfilelist[MAXFILES]; -int symfilecnt = 0; - -static void add_new_symbol(struct symfile *sym, char * symname) -{ - sym->symbollist = - realloc(sym->symbollist, (sym->symbolcnt + 1) * sizeof(char *)); - sym->symbollist[sym->symbolcnt++].name = strdup(symname); -} - -/* Add a filename to the list */ -static struct symfile * add_new_file(char * filename) -{ - symfilelist[symfilecnt++].filename = strdup(filename); - return &symfilelist[symfilecnt - 1]; -} - -/* Check if file already are present in the list */ -static struct symfile * filename_exist(char * filename) -{ - int i; - for (i=0; i < symfilecnt; i++) - if (strcmp(symfilelist[i].filename, filename) == 0) - return &symfilelist[i]; - return NULL; -} - -/* - * List all files referenced within the template file. - * Files are separated by tabs. - */ -static void adddep(char * file) { printf("\t%s", file); } -static void adddep2(char * file, char * line) { line = line; adddep(file); } -static void noaction(char * line) { line = line; } -static void noaction2(char * file, char * line) { file = file; line = line; } - -/* Echo the line without further action */ -static void printline(char * line) { printf("%s", line); } - -/* - * Find all symbols in filename that are exported with EXPORT_SYMBOL & - * EXPORT_SYMBOL_GPL (& EXPORT_SYMBOL_GPL_FUTURE implicitly). - * All symbols located are stored in symfilelist. - */ -static void find_export_symbols(char * filename) -{ - FILE * fp; - struct symfile *sym; - char line[MAXLINESZ]; - if (filename_exist(filename) == NULL) { - char real_filename[PATH_MAX + 1]; - memset(real_filename, 0, sizeof(real_filename)); - strncat(real_filename, srctree, PATH_MAX); - strncat(real_filename, "/", PATH_MAX - strlen(real_filename)); - strncat(real_filename, filename, - PATH_MAX - strlen(real_filename)); - sym = add_new_file(filename); - fp = fopen(real_filename, "r"); - if (fp == NULL) - { - fprintf(stderr, "docproc: "); - perror(real_filename); - exit(1); - } - while (fgets(line, MAXLINESZ, fp)) { - char *p; - char *e; - if (((p = strstr(line, "EXPORT_SYMBOL_GPL")) != NULL) || - ((p = strstr(line, "EXPORT_SYMBOL")) != NULL)) { - /* Skip EXPORT_SYMBOL{_GPL} */ - while (isalnum(*p) || *p == '_') - p++; - /* Remove parentheses & additional whitespace */ - while (isspace(*p)) - p++; - if (*p != '(') - continue; /* Syntax error? */ - else - p++; - while (isspace(*p)) - p++; - e = p; - while (isalnum(*e) || *e == '_') - e++; - *e = '\0'; - add_new_symbol(sym, p); - } - } - fclose(fp); - } -} - -/* - * Document all external or internal functions in a file. - * Call kernel-doc with following parameters: - * kernel-doc -docbook -nofunction function_name1 filename - * Function names are obtained from all the src files - * by find_export_symbols. - * intfunc uses -nofunction - * extfunc uses -function - */ -static void docfunctions(char * filename, char * type) -{ - int i,j; - int symcnt = 0; - int idx = 0; - char **vec; - - for (i=0; i <= symfilecnt; i++) - symcnt += symfilelist[i].symbolcnt; - vec = malloc((2 + 2 * symcnt + 3) * sizeof(char *)); - if (vec == NULL) { - perror("docproc: "); - exit(1); - } - vec[idx++] = KERNELDOC; - vec[idx++] = DOCBOOK; - vec[idx++] = NODOCSECTIONS; - for (i=0; i < symfilecnt; i++) { - struct symfile * sym = &symfilelist[i]; - for (j=0; j < sym->symbolcnt; j++) { - vec[idx++] = type; - consume_symbol(sym->symbollist[j].name); - vec[idx++] = sym->symbollist[j].name; - } - } - vec[idx++] = filename; - vec[idx] = NULL; - printf("<!-- %s -->\n", filename); - exec_kernel_doc(vec); - fflush(stdout); - free(vec); -} -static void intfunc(char * filename) { docfunctions(filename, NOFUNCTION); } -static void extfunc(char * filename) { docfunctions(filename, FUNCTION); } - -/* - * Document specific function(s) in a file. - * Call kernel-doc with the following parameters: - * kernel-doc -docbook -function function1 [-function function2] - */ -static void singfunc(char * filename, char * line) -{ - char *vec[200]; /* Enough for specific functions */ - int i, idx = 0; - int startofsym = 1; - vec[idx++] = KERNELDOC; - vec[idx++] = DOCBOOK; - - /* Split line up in individual parameters preceded by FUNCTION */ - for (i=0; line[i]; i++) { - if (isspace(line[i])) { - line[i] = '\0'; - startofsym = 1; - continue; - } - if (startofsym) { - startofsym = 0; - vec[idx++] = FUNCTION; - vec[idx++] = &line[i]; - } - } - for (i = 0; i < idx; i++) { - if (strcmp(vec[i], FUNCTION)) - continue; - consume_symbol(vec[i + 1]); - } - vec[idx++] = filename; - vec[idx] = NULL; - exec_kernel_doc(vec); -} - -/* - * Insert specific documentation section from a file. - * Call kernel-doc with the following parameters: - * kernel-doc -docbook -function "doc section" filename - */ -static void docsect(char *filename, char *line) -{ - char *vec[6]; /* kerneldoc -docbook -function "section" file NULL */ - char *s; - - for (s = line; *s; s++) - if (*s == '\n') - *s = '\0'; - - if (asprintf(&s, "DOC: %s", line) < 0) { - perror("asprintf"); - exit(1); - } - consume_symbol(s); - free(s); - - vec[0] = KERNELDOC; - vec[1] = DOCBOOK; - vec[2] = FUNCTION; - vec[3] = line; - vec[4] = filename; - vec[5] = NULL; - exec_kernel_doc(vec); -} - -static void find_all_symbols(char *filename) -{ - char *vec[4]; /* kerneldoc -list file NULL */ - pid_t pid; - int ret, i, count, start; - char real_filename[PATH_MAX + 1]; - int pipefd[2]; - char *data, *str; - size_t data_len = 0; - - vec[0] = KERNELDOC; - vec[1] = LIST; - vec[2] = filename; - vec[3] = NULL; - - if (pipe(pipefd)) { - perror("pipe"); - exit(1); - } - - switch (pid=fork()) { - case -1: - perror("fork"); - exit(1); - case 0: - close(pipefd[0]); - dup2(pipefd[1], 1); - memset(real_filename, 0, sizeof(real_filename)); - strncat(real_filename, kernsrctree, PATH_MAX); - strncat(real_filename, "/" KERNELDOCPATH KERNELDOC, - PATH_MAX - strlen(real_filename)); - execvp(real_filename, vec); - fprintf(stderr, "exec "); - perror(real_filename); - exit(1); - default: - close(pipefd[1]); - data = malloc(4096); - do { - while ((ret = read(pipefd[0], - data + data_len, - 4096)) > 0) { - data_len += ret; - data = realloc(data, data_len + 4096); - } - } while (ret == -EAGAIN); - if (ret != 0) { - perror("read"); - exit(1); - } - waitpid(pid, &ret ,0); - } - if (WIFEXITED(ret)) - exitstatus |= WEXITSTATUS(ret); - else - exitstatus = 0xff; - - count = 0; - /* poor man's strtok, but with counting */ - for (i = 0; i < data_len; i++) { - if (data[i] == '\n') { - count++; - data[i] = '\0'; - } - } - start = all_list_len; - all_list_len += count; - all_list = realloc(all_list, sizeof(char *) * all_list_len); - str = data; - 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; -} |