/* * xinstall.c * $Id$ * Copyright (c) 1987, 1993 * The Regents of the University of California. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ /* * 2003/12/29: * * Substantially revamped from original BSD source to become a Tcl builtin * procedure for the MacPorts Project. * Author: Jordan K. Hubbard */ #if HAVE_CONFIG_H #include #endif #if HAVE_SYS_CDEFS_H #include #endif #include #include #include #include #include #include #include #if HAVE_ERR_H #include #endif #include #include #include #include #include #include #include #include #include #include #include "Pextlib.h" #if HAVE_PATHS_H #include #endif #ifndef _PATH_DEVNULL #define _PATH_DEVNULL "/dev/null" #endif #include "xinstall.h" #ifndef MAXBSIZE #define MAXBSIZE 65536 #endif #ifndef S_ISTXT #ifdef S_ISVTX #define S_ISTXT S_ISVTX #else #error "Not sure how to set S_ISTXT" #endif #endif /* copyfile is available on Tiger and later */ #if HAVE_COPYFILE extern int copyfile(const char *from, const char *to, void *state, uint32_t flags) __attribute((weak_import)); #endif #ifndef ALLPERMS #define ALLPERMS (S_ISUID|S_ISGID|S_ISTXT|S_IRWXU|S_IRWXG|S_IRWXO) #endif #if !HAVE_SETMODE #include "setmode.h" #endif /* Bootstrap aid - this doesn't exist in most older releases */ #ifndef MAP_FAILED #define MAP_FAILED ((void *)-1) /* from */ #endif #define MAX_CMP_SIZE (16 * 1024 * 1024) #define DIRECTORY 0x01 /* Tell install it's a directory. */ #define SETFLAGS 0x02 /* Tell install to set flags. */ #define NOCHANGEBITS (UF_IMMUTABLE | UF_APPEND | SF_IMMUTABLE | SF_APPEND) #define BACKUP_SUFFIX ".old" static struct passwd *pp; static struct group *gp; static gid_t gid; static uid_t uid; static const char *suffix = BACKUP_SUFFIX; static char *funcname; static int safecopy, docompare, dostrip, dobackup, dopreserve, nommap; static mode_t mode; static int copy(Tcl_Interp *interp, int, const char *, int, const char *, off_t); static int compare(int, const char *, size_t, int, const char *, size_t); static int create_newfile(Tcl_Interp *interp, const char *, int, struct stat *); static int create_tempfile(const char *, char *, size_t); static int install(Tcl_Interp *interp, const char *, const char *, u_long, u_int); static int install_dir(Tcl_Interp *interp, char *); static u_long numeric_id(Tcl_Interp *interp, const char *, const char *, int *rval); static void strip(const char *); static int trymmap(int); static void usage(Tcl_Interp *interp); int InstallCmd(ClientData clientData UNUSED, Tcl_Interp *interp, int objc, Tcl_Obj *CONST objv[]) { struct stat from_sb, to_sb; mode_t *set; u_long fset = 0; int no_target, rval; u_int iflags; char *flags, *curdir; const char *group, *owner, *cp; Tcl_Obj *to_name; int dodir = 0; suffix = BACKUP_SUFFIX; mode = S_IRWXU | S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH; safecopy = docompare = dostrip = dobackup = dopreserve = nommap = 0; iflags = 0; group = owner = curdir = NULL; funcname = Tcl_GetString(objv[0]); /* Adjust arguments */ ++objv, --objc; while (objc && (cp = Tcl_GetString(*objv)) && *cp == '-') { char ch = *++cp; if (!strchr("BbCcdfgMmopSsvW", ch)) break; switch(ch) { case 'B': if (objc < 2) { Tcl_WrongNumArgs(interp, 1, objv, "-B"); return TCL_ERROR; } suffix = Tcl_GetString(*(++objv)); objv++, objc -= 2; /* FALLTHROUGH */ case 'b': dobackup = 1; objv++, objc--; break; case 'C': docompare = 1; objv++, objc--; break; case 'c': /* For backwards compatibility. */ objv++, objc--; break; case 'd': dodir = 1; objv++, objc--; break; case 'f': #if defined(UF_IMMUTABLE) && defined(SF_IMMUTABLE) if (objc < 2) { Tcl_WrongNumArgs(interp, 1, objv, "-f"); return TCL_ERROR; } flags = Tcl_GetString(*(++objv)); if (strtofflags(&flags, &fset, NULL)) { Tcl_SetResult(interp, "invalid flags for -f", TCL_STATIC); return TCL_ERROR; } iflags |= SETFLAGS; objv++, objc -= 2; #endif break; case 'g': if (objc < 2) { Tcl_WrongNumArgs(interp, 1, objv, "-g"); return TCL_ERROR; } group = Tcl_GetString(*(++objv)); objv++, objc -= 2; break; case 'M': nommap = 1; objv++, objc--; break; case 'm': if (!objc) { Tcl_WrongNumArgs(interp, 1, objv, "-m"); return TCL_ERROR; } if (!(set = setmode(Tcl_GetString(*(++objv))))) { char errmsg[255]; snprintf(errmsg, sizeof errmsg, "%s: Invalid file mode: %s", funcname, Tcl_GetString(*objv)); Tcl_SetResult(interp, errmsg, TCL_VOLATILE); return TCL_ERROR; } mode = getmode(set, 0); free(set); objv++, objc -= 2; break; case 'o': if (!objc) { Tcl_WrongNumArgs(interp, 1, objv, "-o"); return TCL_ERROR; } owner = Tcl_GetString(*(++objv)); objv++, objc -= 2; break; case 'p': docompare = dopreserve = 1; objv++, objc--; break; case 'S': safecopy = 1; objv++, objc--; break; case 's': dostrip = 1; objv++, objc--; break; case 'v': /* provided only for compatibility with install(1) */ objv++, objc--; break; case 'W': if (!objc) { Tcl_WrongNumArgs(interp, 1, objv, "-W"); return TCL_ERROR; } curdir = Tcl_GetString(*(++objv)); objv++, objc -= 2; break; case '?': default: usage(interp); return TCL_ERROR; } } /* some options make no sense when creating directories */ if (dostrip && dodir) { usage(interp); return TCL_ERROR; } /* must have at least two arguments, except when creating directories */ if (objc < 2 && !dodir) { usage(interp); return TCL_ERROR; } else if (dodir && !objc) { usage(interp); return TCL_ERROR; } /* need to make a temp copy so we can compare stripped version */ if (docompare && dostrip) safecopy = 1; /* Start out hoping for the best */ rval = TCL_OK; /* If curdir is set, chdir to it */ if (curdir) { if (chdir(curdir)) { char errmsg[255]; snprintf(errmsg, sizeof errmsg, "%s: Unable to chdir to %s, %s", funcname, curdir, strerror(errno)); Tcl_SetResult(interp, errmsg, TCL_VOLATILE); return TCL_ERROR; } else { char msg[255]; snprintf(msg, sizeof msg, "%s: chdir(%s)\n", funcname, curdir); ui_info(interp, msg); } } /* get group and owner id's */ if (group != NULL) { if ((gp = getgrnam(group)) != NULL) gid = gp->gr_gid; else gid = (gid_t)numeric_id(interp, group, "group", &rval); } else gid = (gid_t)-1; /* If the numeric conversion failed, bail */ if (rval != TCL_OK) return rval; if (owner != NULL) { if ((pp = getpwnam(owner)) != NULL) uid = pp->pw_uid; else uid = (uid_t)numeric_id(interp, owner, "user", &rval); } else uid = (uid_t)-1; /* If the numeric conversion failed, bail */ if (rval != TCL_OK) return rval; if (dodir) { for (; objc; ++objv, --objc) { rval = install_dir(interp, Tcl_GetString(*objv)); if (rval != TCL_OK) return rval; } return rval; } to_name = objv[objc - 1]; no_target = stat(Tcl_GetString(to_name), &to_sb); if (!no_target && S_ISDIR(to_sb.st_mode)) { for (; *objv != to_name; ++objv) { rval = install(interp, Tcl_GetString(*objv), Tcl_GetString(to_name), fset, iflags | DIRECTORY); if (rval != TCL_OK) return rval; } return rval; } /* can't do file1 file2 directory/file */ if (objc != 2) { usage(interp); return TCL_ERROR; } if (!no_target) { if (stat(Tcl_GetString(*objv), &from_sb)) { char errmsg[255]; snprintf(errmsg, sizeof errmsg, "%s: Cannot stat: %s, %s", funcname, Tcl_GetString(*objv), strerror(errno)); Tcl_SetResult(interp, errmsg, TCL_VOLATILE); return TCL_ERROR; } if (!S_ISREG(to_sb.st_mode)) { char errmsg[255]; snprintf(errmsg, sizeof errmsg, "%s: Inappropriate file type: %s", funcname, Tcl_GetString(to_name)); Tcl_SetResult(interp, errmsg, TCL_VOLATILE); return TCL_ERROR; } if (to_sb.st_dev == from_sb.st_dev && to_sb.st_ino == from_sb.st_ino) { char errmsg[255]; snprintf(errmsg, sizeof errmsg, "%s: %s and %s are the same file", funcname, Tcl_GetString(*objv), Tcl_GetString(to_name)); Tcl_SetResult(interp, errmsg, TCL_VOLATILE); return TCL_ERROR; } } return install(interp, Tcl_GetString(*objv), Tcl_GetString(to_name), fset, iflags); } static u_long numeric_id(Tcl_Interp *interp, const char *name, const char *type, int *rval) { u_long val; char *ep; /* * XXX * We know that uid_t's and gid_t's are unsigned longs. */ errno = 0; *rval = TCL_OK; val = strtoul(name, &ep, 10); if (errno) { char errmsg[255]; snprintf(errmsg, sizeof errmsg, "%s: Bad uid: %s", funcname, name); Tcl_SetResult(interp, errmsg, TCL_VOLATILE); *rval = TCL_ERROR; } if (*ep != '\0') { char errmsg[255]; snprintf(errmsg, sizeof errmsg, "%s: Unknown %s %s", funcname, type, name); Tcl_SetResult(interp, errmsg, TCL_VOLATILE); *rval = TCL_ERROR; } return (val); } /* * install -- * build a path name and install the file */ static int install(Tcl_Interp *interp, const char *from_name, const char *to_name, u_long fset, u_int flags) { struct stat from_sb, temp_sb, to_sb; struct timeval tvb[2]; int devnull, files_match, from_fd = 0, serrno, target; int tempcopy, temp_fd, to_fd = 0; char backup[MAXPATHLEN], *p, pathbuf[MAXPATHLEN], tempfile[MAXPATHLEN]; /* message contains function name, two paths and a little bit extra formatting */ char msg[MAXPATHLEN * 2 + 32]; files_match = 0; /* If try to install NULL file to a directory, fails. */ if (flags & DIRECTORY || strcmp(from_name, _PATH_DEVNULL)) { if (stat(from_name, &from_sb)) { char errmsg[255]; snprintf(errmsg, sizeof errmsg, "%s: Cannot stat: %s, %s", funcname, from_name, strerror(errno)); Tcl_SetResult(interp, errmsg, TCL_VOLATILE); return TCL_ERROR; } if (!S_ISREG(from_sb.st_mode)) { char errmsg[255]; snprintf(errmsg, sizeof errmsg, "%s: Inappropriate file type: %s", funcname, from_name); Tcl_SetResult(interp, errmsg, TCL_VOLATILE); errno = EINVAL; return TCL_ERROR; } /* Build the target path. */ if (flags & DIRECTORY) { (void)snprintf(pathbuf, sizeof(pathbuf), "%s/%s", to_name, (p = strrchr(from_name, '/')) ? ++p : from_name); to_name = pathbuf; } devnull = 0; } else { devnull = 1; } target = stat(to_name, &to_sb) == 0; /* Only install to regular files. */ if (target && !S_ISREG(to_sb.st_mode)) { char errmsg[255]; snprintf(errmsg, sizeof errmsg, "%s: Can only install to regular files, not to %s", funcname, to_name); Tcl_SetResult(interp, errmsg, TCL_VOLATILE); errno = EINVAL; return TCL_ERROR; } /* Only copy safe if the target exists. */ tempcopy = safecopy && target; if (!devnull && (from_fd = open(from_name, O_RDONLY, 0)) < 0) { char errmsg[255]; snprintf(errmsg, sizeof errmsg, "%s: Unable to open: %s, %s", funcname, from_name, strerror(errno)); Tcl_SetResult(interp, errmsg, TCL_VOLATILE); return TCL_ERROR; } /* If we don't strip, we can compare first. */ if (docompare && !dostrip && target) { if ((to_fd = open(to_name, O_RDONLY, 0)) < 0) { char errmsg[255]; snprintf(errmsg, sizeof errmsg, "%s: Unable to open: %s, %s", funcname, to_name, strerror(errno)); Tcl_SetResult(interp, errmsg, TCL_VOLATILE); return TCL_ERROR; } if (devnull) files_match = to_sb.st_size == 0; else files_match = !(compare(from_fd, from_name, (size_t)from_sb.st_size, to_fd, to_name, (size_t)to_sb.st_size)); /* Close "to" file unless we match. */ if (!files_match) (void)close(to_fd); } if (!files_match) { if (tempcopy) { to_fd = create_tempfile(to_name, tempfile, sizeof(tempfile)); if (to_fd < 0) { char errmsg[255]; snprintf(errmsg, sizeof errmsg, "%s: Unable to open temporary file for: %s, %s", funcname, to_name, strerror(errno)); Tcl_SetResult(interp, errmsg, TCL_VOLATILE); return TCL_ERROR; } } else { if ((to_fd = create_newfile(interp, to_name, target, &to_sb)) < 0) { char errmsg[255]; snprintf(errmsg, sizeof errmsg, "%s: Unable to create new file for: %s, %s", funcname, to_name, strerror(errno)); Tcl_SetResult(interp, errmsg, TCL_VOLATILE); return TCL_ERROR; } snprintf(msg, sizeof msg, "%s: %s -> %s\n", funcname, from_name, to_name); ui_info(interp, msg); } if (!devnull) { if (copy(interp, from_fd, from_name, to_fd, tempcopy ? tempfile : to_name, from_sb.st_size) != TCL_OK) return TCL_ERROR; #if HAVE_COPYFILE if (copyfile) copyfile(from_name, tempcopy ? tempfile : to_name, 0, 0x5); #endif } } if (dostrip) { strip(tempcopy ? tempfile : to_name); /* * Re-open our fd on the target, in case we used a strip * that does not work in-place -- like GNU binutils strip. */ close(to_fd); to_fd = open(tempcopy ? tempfile : to_name, O_RDONLY, 0); if (to_fd < 0) { char errmsg[255]; snprintf(errmsg, sizeof errmsg, "%s: Error stripping %s, %s", funcname, to_name, strerror(errno)); Tcl_SetResult(interp, errmsg, TCL_VOLATILE); return TCL_ERROR; } } /* * Compare the stripped temp file with the target. */ if (docompare && dostrip && target) { temp_fd = to_fd; /* Re-open to_fd using the real target name. */ if ((to_fd = open(to_name, O_RDONLY, 0)) < 0) { char errmsg[255]; snprintf(errmsg, sizeof errmsg, "%s: Cannot open strip target %s, %s", funcname, to_name, strerror(errno)); Tcl_SetResult(interp, errmsg, TCL_VOLATILE); return TCL_ERROR; } if (fstat(temp_fd, &temp_sb)) { char errmsg[255]; serrno = errno; (void)unlink(tempfile); errno = serrno; snprintf(errmsg, sizeof errmsg, "%s: Cannot stat %s, %s", funcname, tempfile, strerror(errno)); Tcl_SetResult(interp, errmsg, TCL_VOLATILE); return TCL_ERROR; } if (compare(temp_fd, tempfile, (size_t)temp_sb.st_size, to_fd, to_name, (size_t)to_sb.st_size) == 0) { /* * If target has more than one link we need to * replace it in order to snap the extra links. * Need to preserve target file times, though. */ if (to_sb.st_nlink != 1) { tvb[0].tv_sec = to_sb.st_atime; tvb[0].tv_usec = 0; tvb[1].tv_sec = to_sb.st_mtime; tvb[1].tv_usec = 0; (void)utimes(tempfile, tvb); } else { files_match = 1; (void)unlink(tempfile); } (void)close(temp_fd); } } /* * Move the new file into place if doing a safe copy * and the files are different (or just not compared). */ if (tempcopy && !files_match) { /* Try to turn off the immutable bits. */ #if defined(UF_IMMUTABLE) && defined(SF_IMMUTABLE) if (to_sb.st_flags & NOCHANGEBITS) (void)chflags(to_name, to_sb.st_flags & ~NOCHANGEBITS); #endif if (dobackup) { if ((size_t)snprintf(backup, MAXPATHLEN, "%s%s", to_name, suffix) != strlen(to_name) + strlen(suffix)) { char errmsg[255]; unlink(tempfile); snprintf(errmsg, sizeof errmsg, "%s: Backup filename %s too long", funcname, to_name); Tcl_SetResult(interp, errmsg, TCL_VOLATILE); return TCL_ERROR; } snprintf(msg, sizeof msg, "%s: %s -> %s\n", funcname, to_name, backup); ui_info(interp, msg); if (rename(to_name, backup) < 0) { char errmsg[255]; serrno = errno; unlink(tempfile); errno = serrno; snprintf(errmsg, sizeof errmsg, "%s: Rename: %s to %s, %s", funcname, to_name, backup, strerror(errno)); Tcl_SetResult(interp, errmsg, TCL_VOLATILE); return TCL_ERROR; } } snprintf(msg, sizeof msg, "%s: %s -> %s\n", funcname, from_name, to_name); ui_info(interp, msg); if (rename(tempfile, to_name) < 0) { char errmsg[255]; serrno = errno; unlink(tempfile); errno = serrno; snprintf(errmsg, sizeof errmsg, "%s: Rename: %s to %s, %s", funcname, tempfile, to_name, strerror(errno)); Tcl_SetResult(interp, errmsg, TCL_VOLATILE); return TCL_ERROR; } /* Re-open to_fd so we aren't hosed by the rename(2). */ (void) close(to_fd); if ((to_fd = open(to_name, O_RDONLY, 0)) < 0) { char errmsg[255]; snprintf(errmsg, sizeof errmsg, "%s: Cannot open %s, %s", funcname, to_name, strerror(errno)); Tcl_SetResult(interp, errmsg, TCL_VOLATILE); return TCL_ERROR; } } /* * Preserve the timestamp of the source file if necessary. */ if (dopreserve && !files_match && !devnull) { tvb[0].tv_sec = from_sb.st_atime; tvb[0].tv_usec = 0; tvb[1].tv_sec = from_sb.st_mtime; tvb[1].tv_usec = 0; (void)utimes(to_name, tvb); } if (fstat(to_fd, &to_sb) == -1) { char errmsg[255]; serrno = errno; (void)unlink(to_name); errno = serrno; snprintf(errmsg, sizeof errmsg, "%s: Cannot stat %s, %s", funcname, to_name, strerror(errno)); Tcl_SetResult(interp, errmsg, TCL_VOLATILE); return TCL_ERROR; } /* * Set owner, group, mode for target; do the chown first, * chown may lose the setuid bits. */ if ((gid != (gid_t)-1 && gid != to_sb.st_gid) || (uid != (uid_t)-1 && uid != to_sb.st_uid) || (mode != (to_sb.st_mode & ALLPERMS))) { #if defined(UF_IMMUTABLE) && defined(SF_IMMUTABLE) /* Try to turn off the immutable bits. */ if (to_sb.st_flags & NOCHANGEBITS) (void)fchflags(to_fd, to_sb.st_flags & ~NOCHANGEBITS); #endif } if ((gid != (gid_t)-1 && gid != to_sb.st_gid) || (uid != (uid_t)-1 && uid != to_sb.st_uid)) if (fchown(to_fd, uid, gid) == -1) { char errmsg[255]; serrno = errno; (void)unlink(to_name); errno = serrno; snprintf(errmsg, sizeof errmsg, "%s: chown/chgrp %s, %s", funcname, to_name, strerror(errno)); Tcl_SetResult(interp, errmsg, TCL_VOLATILE); return TCL_ERROR; } if (mode != (to_sb.st_mode & ALLPERMS)) if (fchmod(to_fd, mode)) { char errmsg[255]; serrno = errno; (void)unlink(to_name); errno = serrno; snprintf(errmsg, sizeof errmsg, "%s: chmod %s, %s", funcname, to_name, strerror(errno)); Tcl_SetResult(interp, errmsg, TCL_VOLATILE); return TCL_ERROR; } /* * If provided a set of flags, set them, otherwise, preserve the * flags, except for the dump flag. * NFS does not support flags. Ignore EOPNOTSUPP flags if we're just * trying to turn off UF_NODUMP. If we're trying to set real flags, * then warn if the fs doesn't support it, otherwise fail. */ #if defined(UF_NODUMP) if (!devnull && (flags & SETFLAGS || (from_sb.st_flags & ~UF_NODUMP) != to_sb.st_flags) && fchflags(to_fd, flags & SETFLAGS ? fset : from_sb.st_flags & ~UF_NODUMP)) { if (flags & SETFLAGS) { if (errno != EOPNOTSUPP) { char errmsg[255]; serrno = errno; (void)unlink(to_name); errno = serrno; snprintf(errmsg, sizeof errmsg, "%s: chflags %s, %s", funcname, to_name, strerror(errno)); Tcl_SetResult(interp, errmsg, TCL_VOLATILE); return TCL_ERROR; } } } #endif (void)close(to_fd); if (!devnull) (void)close(from_fd); return TCL_OK; } /* * compare -- * compare two files; non-zero means files differ */ static int compare(int from_fd, const char *from_name UNUSED, size_t from_len, int to_fd, const char *to_name UNUSED, size_t to_len) { char *p, *q; int rv; int done_compare; rv = 0; if (from_len != to_len) return 1; if (from_len <= MAX_CMP_SIZE) { done_compare = 0; if (trymmap(from_fd) && trymmap(to_fd)) { p = mmap(NULL, from_len, PROT_READ, MAP_SHARED, from_fd, (off_t)0); if (p == (char *)MAP_FAILED) goto out; q = mmap(NULL, from_len, PROT_READ, MAP_SHARED, to_fd, (off_t)0); if (q == (char *)MAP_FAILED) { munmap(p, from_len); goto out; } rv = memcmp(p, q, from_len); munmap(p, from_len); munmap(q, from_len); done_compare = 1; } out: if (!done_compare) { char buf1[MAXBSIZE]; char buf2[MAXBSIZE]; int n1, n2; rv = 0; lseek(from_fd, 0, SEEK_SET); lseek(to_fd, 0, SEEK_SET); while (rv == 0) { n1 = read(from_fd, buf1, sizeof(buf1)); if (n1 == 0) break; /* EOF */ else if (n1 > 0) { n2 = read(to_fd, buf2, n1); if (n2 == n1) rv = memcmp(buf1, buf2, n1); else rv = 1; /* out of sync */ } else rv = 1; /* read failure */ } lseek(from_fd, 0, SEEK_SET); lseek(to_fd, 0, SEEK_SET); } } else rv = 1; /* don't bother in this case */ return rv; } /* * create_tempfile -- * create a temporary file based on path and open it */ static int create_tempfile(const char *path, char *temp, size_t tsize) { char *p; (void)strncpy(temp, path, tsize); temp[tsize - 1] = '\0'; if ((p = strrchr(temp, '/')) != NULL) p++; else p = temp; (void)strncpy(p, "INS@XXXX", &temp[tsize - 1] - p); temp[tsize - 1] = '\0'; return (mkstemp(temp)); } /* * create_newfile -- * create a new file, overwriting an existing one if necessary */ static int create_newfile(Tcl_Interp *interp, const char *path, int target, struct stat *sbp) { char backup[MAXPATHLEN]; int saved_errno = 0; int newfd; char msg[256]; if (target) { /* * Unlink now... avoid ETXTBSY errors later. Try to turn * off the append/immutable bits -- if we fail, go ahead, * it might work. */ #if defined(UF_IMMUTABLE) && defined(SF_IMMUTABLE) if (sbp->st_flags & NOCHANGEBITS) (void)chflags(path, sbp->st_flags & ~NOCHANGEBITS); #endif if (dobackup) { if ((size_t)snprintf(backup, MAXPATHLEN, "%s%s", path, suffix) != strlen(path) + strlen(suffix)) { char errmsg[255]; snprintf(errmsg, sizeof errmsg, "%s: Backup filename %s too long", funcname, path); Tcl_SetResult(interp, errmsg, TCL_VOLATILE); return -1; } (void)snprintf(backup, MAXPATHLEN, "%s%s", path, suffix); snprintf(msg, sizeof msg, "%s: %s -> %s\n", funcname, path, backup); ui_info(interp, msg); if (rename(path, backup) < 0) { char errmsg[255]; snprintf(errmsg, sizeof errmsg, "%s: Rename: %s to %s, %s", funcname, path, backup, strerror(errno)); Tcl_SetResult(interp, errmsg, TCL_VOLATILE); return -1; } } else if (unlink(path) < 0) saved_errno = errno; } newfd = open(path, O_CREAT | O_RDWR | O_TRUNC, S_IRUSR | S_IWUSR); if (newfd < 0 && saved_errno != 0) errno = saved_errno; return newfd; } /* * copy -- * copy from one file to another */ static int copy(Tcl_Interp *interp, int from_fd, const char *from_name, int to_fd, const char *to_name, off_t size) { int nr, nw; int serrno; char *p, buf[MAXBSIZE]; int done_copy; /* Rewind file descriptors. */ if (lseek(from_fd, (off_t)0, SEEK_SET) == (off_t)-1) { char errmsg[255]; snprintf(errmsg, sizeof errmsg, "%s: lseek %s, %s", funcname, from_name, strerror(errno)); Tcl_SetResult(interp, errmsg, TCL_VOLATILE); return TCL_ERROR; } if (lseek(to_fd, (off_t)0, SEEK_SET) == (off_t)-1) { char errmsg[255]; snprintf(errmsg, sizeof errmsg, "%s: lseek %s, %s", funcname, to_name, strerror(errno)); Tcl_SetResult(interp, errmsg, TCL_VOLATILE); return TCL_ERROR; } /* * Mmap and write if less than 8M (the limit is so we don't totally * trash memory on big files. This is really a minor hack, but it * wins some CPU back. */ done_copy = 0; if (size <= 8 * 1048576 && trymmap(from_fd) && (p = mmap(NULL, (size_t)size, PROT_READ, MAP_SHARED, from_fd, (off_t)0)) != (char *)MAP_FAILED) { if ((nw = write(to_fd, p, size)) != size) { char errmsg[255]; serrno = errno; (void)unlink(to_name); errno = nw > 0 ? EIO : serrno; snprintf(errmsg, sizeof errmsg, "%s: Write error on %s, %s", funcname, to_name, strerror(errno)); Tcl_SetResult(interp, errmsg, TCL_VOLATILE); return TCL_ERROR; } done_copy = 1; } if (!done_copy) { while ((nr = read(from_fd, buf, sizeof(buf))) > 0) if ((nw = write(to_fd, buf, nr)) != nr) { char errmsg[255]; serrno = errno; (void)unlink(to_name); errno = nw > 0 ? EIO : serrno; snprintf(errmsg, sizeof errmsg, "%s: Write error on %s, %s", funcname, to_name, strerror(errno)); Tcl_SetResult(interp, errmsg, TCL_VOLATILE); return TCL_ERROR; } if (nr != 0) { char errmsg[255]; serrno = errno; (void)unlink(to_name); errno = serrno; snprintf(errmsg, sizeof errmsg, "%s: Error on %s, %s", funcname, from_name, strerror(errno)); Tcl_SetResult(interp, errmsg, TCL_VOLATILE); return TCL_ERROR; } } return TCL_OK; } /* * strip -- * use strip(1) to strip the target file */ static void strip(const char *to_name) { const char *stripbin; int serrno, status; switch (fork()) { case -1: serrno = errno; (void)unlink(to_name); errno = serrno; return; case 0: stripbin = getenv("STRIPBIN"); if (stripbin == NULL) stripbin = "strip"; execlp(stripbin, stripbin, to_name, (char *)NULL); return; default: if (wait(&status) == -1 || status) { serrno = errno; (void)unlink(to_name); errno = serrno; return; } } } /* * install_dir -- * build directory heirarchy */ int install_dir(Tcl_Interp *interp, char *path) { char *p; struct stat sb; int ch; for (p = path;; ++p) if (!*p || (p != path && *p == '/')) { ch = *p; *p = '\0'; if (stat(path, &sb)) { if (errno != ENOENT || mkdir(path, 0755) < 0) { char errmsg[255]; *p = ch; snprintf(errmsg, sizeof errmsg, "%s: mkdir %s, %s", funcname, path, strerror(errno)); Tcl_SetResult(interp, errmsg, TCL_VOLATILE); return TCL_ERROR; } else { char msg[255]; snprintf(msg, sizeof msg, "%s: mkdir %s\n", funcname, path); ui_info(interp, msg); } } else if (!S_ISDIR(sb.st_mode)) { char errmsg[255]; snprintf(errmsg, sizeof errmsg, "%s: directory target %s exists and is not a directory", funcname, path); Tcl_SetResult(interp, errmsg, TCL_VOLATILE); return TCL_ERROR; } if (!(*p = ch)) break; } if ((gid != (gid_t)-1 || uid != (uid_t)-1) && chown(path, uid, gid)) { /* Don't bother to warn */ }; if (chmod(path, mode)) { /* Don't bother to warn */ }; return TCL_OK; } /* * usage -- * copy usage message to Tcl result. */ static void usage(Tcl_Interp *interp) { char errmsg[500]; snprintf(errmsg, sizeof errmsg, "%s usage: %s [-bCcpSsv] [-B suffix] [-W dir] [-f flags] [-g group] [-m mode]\n" " [-o owner] file1 file2\n" " %s [-bCcpSsv] [-B suffix] [-W dir] [-f flags] [-g group] [-m mode]\n" " [-o owner] file1 ... fileN directory\n" " %s -d [-v] [-g group] [-m mode] [-o owner] directory ...", funcname, funcname, funcname, funcname); Tcl_SetResult(interp, errmsg, TCL_VOLATILE); } /* * trymmap -- * return true (1) if mmap should be tried, false (0) if not. */ int trymmap(int fd) { /* * The ifdef is for bootstrapping - f_fstypename doesn't exist in * pre-Lite2-merge systems. */ #ifdef MFSNAMELEN struct statfs stfs; if (nommap || fstatfs(fd, &stfs) != 0) return (0); if (strcmp(stfs.f_fstypename, "ufs") == 0 || strcmp(stfs.f_fstypename, "cd9660") == 0) return (1); #endif return (0); }