Carl Shapiro pushed to branch master at cmucl / cmucl Commits: 83899880 by Carl Shapiro at 2024-08-29T23:32:31-07:00 Remove the call to malloc and strdup from obj_run_linker - - - - - 5f6bce01 by Carl Shapiro at 2024-08-30T17:07:11+00:00 Merge branch 'obj-run-linker-no-malloc-or-strdup' into 'master' Remove the call to malloc and strdup from obj_run_linker Closes #309 See merge request cmucl/cmucl!251 - - - - - 1 changed file: - src/lisp/elf.c Changes: ===================================== src/lisp/elf.c ===================================== @@ -11,11 +11,11 @@ $Id: elf.c,v 1.32 2010/12/23 03:20:27 rtoy Exp $ */ +#include <stddef.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include <fcntl.h> -#include <sys/stat.h> #include <sys/types.h> #include <unistd.h> @@ -319,59 +319,65 @@ write_space_object(const char *dir, int id, os_vm_address_t start, os_vm_address return ret; } +#ifdef UNICODE +#define LISPCHAR unsigned short +#else +#define LISPCHAR char +#endif + +static LISPCHAR * +tokenize(LISPCHAR *str, LISPCHAR **end) +{ + LISPCHAR *ptr; + + ptr = str; +again: + while (*ptr != '\0' && *ptr != ':') + ptr++; + if (str == ptr && *ptr == ':') { + str = ++ptr; + goto again; + } + *end = ptr; + return str; +} + int obj_run_linker(long init_func_address, char *file) { lispobj libstring = SymbolValue(CMUCL_LIB); /* Get library: */ struct vector *vec = (struct vector *)PTR(libstring); - char *paths; - char command[FILENAME_MAX + 1]; - char command_line[FILENAME_MAX + FILENAME_MAX + 10]; - char *strptr; - struct stat st; + char command[PATH_MAX]; + char command_line[PATH_MAX * 2 + 10]; + LISPCHAR *strptr, *end = (LISPCHAR *)vec->data; int ret; extern int debug_lisp_search; -#ifndef UNICODE - paths = strdup((char *)vec->data); - if (paths == NULL) { - perror("strdup"); - return -1; - } -#else - /* - * What should we do here with 16-bit characters? For now we just - * take the low 8-bits. - */ - paths = malloc(vec->length); - if (paths == NULL) { - perror("malloc"); - return -1; - } else { - int k; - unsigned short *data; - data = (unsigned short*) vec->data; - - for (k = 0; k < vec->length; ++k) { - paths[k] = data[k] & 0xff; - } - } -#endif - strptr = strtok(paths, ":"); if (debug_lisp_search) { printf("Searching for linker.sh script\n"); } - while(strptr != NULL) { - - sprintf(command, "%s/%s", strptr, LINKER_SCRIPT); + while ((strptr = tokenize(end, &end)) != end) { + ptrdiff_t len = end - strptr; + ptrdiff_t i; + + if (len + strlen("/" LINKER_SCRIPT) > PATH_MAX) + continue; + + /* + * What should we do here with 16-bit characters? For now we just + * take the low 8-bits. + */ + for (i = 0; i < len; i++) + command[i] = strptr[i] & 0xFF; + command[i] = '\0'; + strcat(command, "/" LINKER_SCRIPT); if (debug_lisp_search) { printf(" %s\n", command); } - if (stat(command, &st) == 0) { - free(paths); + if (access(command, F_OK) == 0) { printf("\t[%s: linking %s... \n", command, file); fflush(stdout); #if defined(__linux__) || defined(__FreeBSD__) || defined(SOLARIS) || defined(__NetBSD__) @@ -394,15 +400,14 @@ obj_run_linker(long init_func_address, char *file) } return ret; } - strptr = strtok(NULL, ":"); } fprintf(stderr, "Can't find %s script in CMUCL library directory list.\n", LINKER_SCRIPT); - free(paths); return -1; } +#undef LISPCHAR /* Read the ELF header from a file descriptor and stuff it into a structure. Make sure it is really an elf header etc. */ View it on GitLab: https://gitlab.common-lisp.net/cmucl/cmucl/-/compare/66dab205671d5bbc2f16e19... -- View it on GitLab: https://gitlab.common-lisp.net/cmucl/cmucl/-/compare/66dab205671d5bbc2f16e19... You're receiving this email because of your account on gitlab.common-lisp.net.