ref: 17189bc8295651f0959354596c39551994061a37
dir: /src/cmd/strip.c/
#include <errno.h> #include <stdarg.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include <scc/arg.h> #include <scc/mach.h> static int status; static char tmpname[FILENAME_MAX]; static char *filename; char *argv0; static void error(char *fmt, ...) { va_list va; va_start(va, fmt); fprintf(stderr, "strip: %s: ", filename); vfprintf(stderr, fmt, va); putc('\n', stderr); va_end(va); status = EXIT_FAILURE; } static void doit(char *fname) { int type;; size_t r; FILE *src, *dst; Map *map; Obj *obj; errno = 0; filename = fname; r = snprintf(tmpname, sizeof(tmpname), "%s.tmp", fname); if (r >= sizeof(tmpname)) { error("%s: name too long", fname); return; } if ((src = fopen(fname, "rb")) == NULL) { error("opening src file"); goto err0; } if ((type = objtype(src, NULL)) < 0) { error("getting object type"); goto err1; } if ((obj = newobj(type)) == NULL) { error("creating object"); goto err1; } if (readobj(obj, src) < 0) { error("reading object"); goto err2; } if ((map = loadmap(obj, src)) == NULL) { error("loading map"); goto err3; } if (strip(obj) < 0) { error("stripping"); goto err3; } if ((dst = fopen(tmpname, "wb")) == NULL) { error("opening dst"); goto err3; } if (writeobj(obj, map, dst) < 0) { error("writing object"); goto err5; } if (fclose(dst) == EOF) { error("closing dst"); goto err4; } if (remove(fname) == EOF) { error("removing fname"); goto err4; } if (rename(tmpname, fname) == EOF) { error("rename fname"); goto err4; } goto err3; err5: fclose(dst); err4: remove(tmpname); err3: free(map); err2: delobj(obj); err1: fclose(src); err0: error("cannot strip it"); } static void usage(void) { fputs("usage: strip [file...]\n", stderr); exit(EXIT_FAILURE); } int main(int argc, char *argv[]) { ARGBEGIN { default: usage(); } ARGEND if (argc == 0) { doit("a.out"); } else { for (; *argv; ++argv) doit(*argv); } return status; }