void c_special(int fd1, const char *file1, off_t skip1, int fd2, const char *file2, off_t skip2) { int ch1, ch2; off_t byte, line; FILE *fp1, *fp2; int dfound; if ((fp1 = fdopen(fd1, "r")) == NULL) err(ERR_EXIT, "%s", file1); if ((fp2 = fdopen(fd2, "r")) == NULL) err(ERR_EXIT, "%s", file2); dfound = 0; while (skip1--) if (getc(fp1) == EOF) goto eof; while (skip2--) if (getc(fp2) == EOF) goto eof; for (byte = line = 1;; ++byte) { ch1 = getc(fp1); ch2 = getc(fp2); if (ch1 == EOF || ch2 == EOF) break; if (ch1 != ch2) { if (xflag) { dfound = 1; (void)printf("%08llx %02x %02x\n", (long long)byte - 1, ch1, ch2); } else if (lflag) { dfound = 1; (void)printf("%6lld %3o %3o\n", (long long)byte, ch1, ch2); } else { diffmsg(file1, file2, byte, line); /* NOTREACHED */ } } if (ch1 == '\n') ++line; } eof: if (ferror(fp1)) err(ERR_EXIT, "%s", file1); if (ferror(fp2)) err(ERR_EXIT, "%s", file2); if (feof(fp1)) { if (!feof(fp2)) eofmsg(file1); } else if (feof(fp2)) eofmsg(file2); if (dfound) exit(DIFF_EXIT); }
void c_link(const char *file1, off_t skip1, const char *file2, off_t skip2) { char buf1[PATH_MAX], *p1; char buf2[PATH_MAX], *p2; int dfound, len1, len2; off_t byte; u_char ch; if ((len1 = readlink(file1, buf1, sizeof(buf1) - 1)) < 0) { if (!sflag) err(ERR_EXIT, "%s", file1); else exit(ERR_EXIT); } if ((len2 = readlink(file2, buf2, sizeof(buf2) - 1)) < 0) { if (!sflag) err(ERR_EXIT, "%s", file2); else exit(ERR_EXIT); } if (skip1 > len1) skip1 = len1; buf1[len1] = '\0'; if (skip2 > len2) skip2 = len2; buf2[len2] = '\0'; dfound = 0; byte = 1; for (p1 = buf1 + skip1, p2 = buf2 + skip2; *p1 && *p2; p1++, p2++) { if ((ch = *p1) != *p2) { if (xflag) { dfound = 1; (void)printf("%08llx %02x %02x\n", (long long)byte - 1, ch, *p2); } else if (lflag) { dfound = 1; (void)printf("%6lld %3o %3o\n", (long long)byte, ch, *p2); } else diffmsg(file1, file2, byte, 1); /* NOTREACHED */ } byte++; } if (*p1 || *p2) eofmsg (*p1 ? file2 : file1); if (dfound) exit(DIFF_EXIT); }
c_special(int fd1, char *file1, off_t skip1, int fd2, char *file2, off_t skip2) #endif { int ch1, ch2; off_t byte, line; FILE *fp1, *fp2; int dfound; if ((fp1 = fdopen(fd1, "r")) == NULL) err(ERR_EXIT, "%s", file1); if ((fp2 = fdopen(fd2, "r")) == NULL) err(ERR_EXIT, "%s", file2); dfound = 0; while (skip1--) if (getc(fp1) == EOF) goto eof; while (skip2--) if (getc(fp2) == EOF) goto eof; for (byte = line = 1;; ++byte) { ch1 = getc(fp1); ch2 = getc(fp2); if (ch1 == EOF || ch2 == EOF) break; if (ch1 != ch2) { if (lflag) { dfound = 1; #ifndef __GNO__ (void)printf("%6qd %3o %3o\n", byte, ch1, ch2); #else (void)printf("%c%6ld %3o %3o\n", (rflag==2)? 'R' : 'D', byte, ch1, ch2); #endif } else diffmsg(file1, file2, byte, line); /* NOTREACHED */ } if (ch1 == '\n') ++line; } eof: if (ferror(fp1)) err(ERR_EXIT, "%s", file1); if (ferror(fp2)) err(ERR_EXIT, "%s", file2); if (feof(fp1)) { if (!feof(fp2)) eofmsg(file1); } else if (feof(fp2)) eofmsg(file2); if (dfound) exit(DIFF_EXIT); }
void c_regular(int fd1, const char *file1, off_t skip1, off_t len1, int fd2, const char *file2, off_t skip2, off_t len2) { u_char ch, *p1, *p2, *m1, *m2, *e1, *e2; off_t byte, length, line; int dfound; off_t pagemask, off1, off2; size_t pagesize; if (skip1 > len1) eofmsg(file1); len1 -= skip1; if (skip2 > len2) eofmsg(file2); len2 -= skip2; if (sflag && len1 != len2) exit(DIFF_EXIT); pagesize = getpagesize(); pagemask = (off_t)pagesize - 1; off1 = ROUNDPAGE(skip1); off2 = ROUNDPAGE(skip2); length = MIN(len1, len2); if ((m1 = remmap(NULL, fd1, off1)) == NULL) { c_special(fd1, file1, skip1, fd2, file2, skip2); return; } if ((m2 = remmap(NULL, fd2, off2)) == NULL) { munmap(m1, MMAP_CHUNK); c_special(fd1, file1, skip1, fd2, file2, skip2); return; } dfound = 0; e1 = m1 + MMAP_CHUNK; e2 = m2 + MMAP_CHUNK; p1 = m1 + (skip1 - off1); p2 = m2 + (skip2 - off2); for (byte = line = 1; length--; ++byte) { if ((ch = *p1) != *p2) { if (xflag) { dfound = 1; printf("%08jx %02x %02x\n", (intmax_t)byte - 1, ch, *p2); } else if (lflag) { dfound = 1; printf("%6jd %3o %3o\n", (intmax_t)byte, ch, *p2); } else { diffmsg(file1, file2, byte, line); /* NOTREACHED */ } } if (ch == '\n') ++line; if (++p1 == e1) { off1 += MMAP_CHUNK; if ((p1 = m1 = remmap(m1, fd1, off1)) == NULL) { munmap(m2, MMAP_CHUNK); err(ERR_EXIT, "remmap %s", file1); } e1 = m1 + MMAP_CHUNK; } if (++p2 == e2) { off2 += MMAP_CHUNK; if ((p2 = m2 = remmap(m2, fd2, off2)) == NULL) { munmap(m1, MMAP_CHUNK); err(ERR_EXIT, "remmap %s", file2); } e2 = m2 + MMAP_CHUNK; } } munmap(m1, MMAP_CHUNK); munmap(m2, MMAP_CHUNK); if (len1 != len2) eofmsg (len1 > len2 ? file2 : file1); if (dfound) exit(DIFF_EXIT); }
void c_regular(int fd1, const char *file1, off_t skip1, off_t len1, int fd2, const char *file2, off_t skip2, off_t len2) { u_char ch, *p1, *p2, *m1, *m2, *e1, *e2; off_t byte, length, line; int dfound; off_t pagemask, off1, off2; size_t pagesize; struct sigaction act, oact; if (skip1 > len1) eofmsg(file1); len1 -= skip1; if (skip2 > len2) eofmsg(file2); len2 -= skip2; if (sflag && len1 != len2) exit(DIFF_EXIT); sigemptyset(&act.sa_mask); act.sa_flags = SA_NODEFER; act.sa_handler = segv_handler; if (sigaction(SIGSEGV, &act, &oact)) err(ERR_EXIT, "sigaction()"); pagesize = getpagesize(); pagemask = (off_t)pagesize - 1; off1 = ROUNDPAGE(skip1); off2 = ROUNDPAGE(skip2); length = MIN(len1, len2); if ((m1 = remmap(NULL, fd1, off1)) == NULL) { c_special(fd1, file1, skip1, fd2, file2, skip2); return; } if ((m2 = remmap(NULL, fd2, off2)) == NULL) { munmap(m1, MMAP_CHUNK); c_special(fd1, file1, skip1, fd2, file2, skip2); return; } dfound = 0; e1 = m1 + MMAP_CHUNK; e2 = m2 + MMAP_CHUNK; p1 = m1 + (skip1 - off1); p2 = m2 + (skip2 - off2); for (byte = line = 1; length--; ++byte) { if ((ch = *p1) != *p2) { if (xflag) { dfound = 1; (void)printf("%08llx %02x %02x\n", (long long)byte - 1, ch, *p2); } else if (lflag) { dfound = 1; (void)printf("%6lld %3o %3o\n", (long long)byte, ch, *p2); } else diffmsg(file1, file2, byte, line); /* NOTREACHED */ } if (ch == '\n') ++line; if (++p1 == e1) { off1 += MMAP_CHUNK; if ((p1 = m1 = remmap(m1, fd1, off1)) == NULL) { munmap(m2, MMAP_CHUNK); err(ERR_EXIT, "remmap %s", file1); } e1 = m1 + MMAP_CHUNK; } if (++p2 == e2) { off2 += MMAP_CHUNK; if ((p2 = m2 = remmap(m2, fd2, off2)) == NULL) { munmap(m1, MMAP_CHUNK); err(ERR_EXIT, "remmap %s", file2); } e2 = m2 + MMAP_CHUNK; } } munmap(m1, MMAP_CHUNK); munmap(m2, MMAP_CHUNK); if (sigaction(SIGSEGV, &oact, NULL)) err(ERR_EXIT, "sigaction()"); if (len1 != len2) eofmsg (len1 > len2 ? file2 : file1); if (dfound) exit(DIFF_EXIT); }
c_regular(int fd1, char *file1, off_t skip1, off_t len1, int fd2, char *file2, off_t skip2, off_t len2) #endif { #ifndef __GNO__ u_char ch, *p1, *p2; #else u_char ch, p1, p2; #endif off_t byte, length, line; int dfound; off_t pagemask, off1, off2; if (sflag && len1 != len2) exit(1); if (skip1 > len1) eofmsg(file1); len1 -= skip1; if (skip2 > len2) eofmsg(file2); len2 -= skip2; pagemask = (off_t)getpagesize() - 1; off1 = ROUNDPAGE(skip1); off2 = ROUNDPAGE(skip2); length = MIN(len1, len2); #ifndef __ORCAC__ if (length > SIZE_T_MAX) return (c_special(fd1, file1, skip1, fd2, file2, skip2)); #else if (length > SIZE_T_MAX) { c_special(fd1, file1, skip1, fd2, file2, skip2); return; } #endif #ifndef __GNO__ if ((p1 = (u_char *)mmap(NULL, (size_t)length, PROT_READ, MAP_SHARED, fd1, off1)) == (u_char *)MAP_FAILED) err(ERR_EXIT, "%s", file1); madvise(p1, length, MADV_SEQUENTIAL); if ((p2 = (u_char *)mmap(NULL, (size_t)length, PROT_READ, MAP_SHARED, fd2, off2)) == (u_char *)MAP_FAILED) err(ERR_EXIT, "%s", file2); madvise(p2, length, MADV_SEQUENTIAL); dfound = 0; p1 += skip1 - off1; p2 += skip2 - off2; for (byte = line = 1; length--; ++p1, ++p2, ++byte) { if ((ch = *p1) != *p2) if (lflag) { dfound = 1; (void)printf("%6qd %3o %3o\n", byte, ch, *p2); } else diffmsg(file1, file2, byte, line); /* NOTREACHED */ if (ch == '\n') ++line; } if (len1 != len2) eofmsg (len1 > len2 ? file2 : file1); if (dfound) exit(DIFF_EXIT); #else dfound = 0; lseek(fd1, skip1, SEEK_SET); lseek(fd2, skip2, SEEK_SET); for (byte = line = 1; length--; ++byte) { read(fd1, (void *) &p1, 1); read(fd2, (void *) &p2, 1); if (p1 != p2) if (lflag) { dfound = 1; (void)printf("%6qd %3o %3o\n", byte, ch, p2); } else diffmsg(file1, file2, byte, line); /* NOTREACHED */ if (p1 == '\n') ++line; } if (len1 != len2) eofmsg (len1 > len2 ? file2 : file1); if (dfound) exit(DIFF_EXIT); #endif }
int c_regular(struct finfo *f0, struct finfo *f1, int opts) { u_char ch, *p1, *p2, *m1, *m2, *e1, *e2; off_t byte, length, line; int dfound; off_t pagemask, off1, off2; struct sigaction act, oact; off_t len1 = f0->st->st_size; off_t len2 = f1->st->st_size; if ((opts & CMP_SIZEFIRST) && CMP_TAILLEN(f0) != CMP_TAILLEN(f1)) { if (!(opts & CMP_SILENT)) (void) printf("%s %s differ: size\n", f0->path, f1->path); return DIFF_EXIT; } if (f0->skip > len1) return eofmsg(f0, opts); len1 -= f0->skip; if (f1->skip > len2) return eofmsg(f1, opts); len2 -= f1->skip; if ((opts & CMP_SILENT) && len1 != len2) return DIFF_EXIT; sigemptyset(&act.sa_mask); act.sa_flags = SA_NODEFER; act.sa_handler = segv_handler; if (sigaction(SIGSEGV, &act, &oact)) err(ERR_EXIT, "sigaction()"); /* floor skips to pagesize multiples */ pagemask = (off_t)getpagesize() - 1; off1 = f0->skip & ~pagemask; off2 = f1->skip & ~pagemask; length = MIN(len1, len2); if ((m1 = remmap(NULL, f0->fd, off1)) == NULL) { return c_special(f0, f1, opts); } if ((m2 = remmap(NULL, f1->fd, off2)) == NULL) { munmap(m1, MMAP_CHUNK); return c_special(f0, f1, opts); } dfound = 0; e1 = m1 + MMAP_CHUNK; e2 = m2 + MMAP_CHUNK; p1 = m1 + (f0->skip - off1); p2 = m2 + (f1->skip - off2); for (byte = line = 1; length--; ++byte) { if ((ch = *p1) != *p2) { if (opts & CMP_ALLHEXES) { dfound = 1; (void)printf("%08llx %02x %02x\n", (long long)byte - 1, ch, *p2); } else if (opts & CMP_ALLDIFFS) { dfound = 1; (void)printf("%6lld %3o %3o\n", (long long)byte, ch, *p2); } else return diffmsg(f0, f1, byte, line, opts); } if (ch == '\n') ++line; if (++p1 == e1) { off1 += MMAP_CHUNK; if ((p1 = m1 = remmap(m1, f0->fd, off1)) == NULL) { munmap(m2, MMAP_CHUNK); err(ERR_EXIT, "remmap %s", f0->path); } e1 = m1 + MMAP_CHUNK; } if (++p2 == e2) { off2 += MMAP_CHUNK; if ((p2 = m2 = remmap(m2, f1->fd, off2)) == NULL) { munmap(m1, MMAP_CHUNK); err(ERR_EXIT, "remmap %s", f1->path); } e2 = m2 + MMAP_CHUNK; } } munmap(m1, MMAP_CHUNK); munmap(m2, MMAP_CHUNK); if (sigaction(SIGSEGV, &oact, NULL)) err(ERR_EXIT, "sigaction()"); if (len1 != len2) return eofmsg (len1 > len2 ? f1 : f0, opts); if (dfound) return DIFF_EXIT; return OK_EXIT; }