--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/openenvutils/commandshell/shell/src/modules/files.c Tue Feb 02 10:12:00 2010 +0200
@@ -0,0 +1,763 @@
+// files.c - file operation builtins
+//
+// © Portions Copyright (c) Symbian Software Ltd 2007. All rights reserved.
+//
+/*
+ * This file is part of zsh, the Z shell.
+ *
+ * Copyright (c) 1996-1997 Andrew Main
+ * All rights reserved.
+ *
+ * Permission is hereby granted, without written agreement and without
+ * license or royalty fees, to use, copy, modify, and distribute this
+ * software and to distribute modified versions of this software for any
+ * purpose, provided that the above copyright notice and the following
+ * two paragraphs appear in all copies of this software.
+ *
+ * In no event shall Andrew Main or the Zsh Development Group be liable
+ * to any party for direct, indirect, special, incidental, or consequential
+ * damages arising out of the use of this software and its documentation,
+ * even if Andrew Main and the Zsh Development Group have been advised of
+ * the possibility of such damage.
+ *
+ * Andrew Main and the Zsh Development Group specifically disclaim any
+ * warranties, including, but not limited to, the implied warranties of
+ * merchantability and fitness for a particular purpose. The software
+ * provided hereunder is on an "as is" basis, and Andrew Main and the
+ * Zsh Development Group have no obligation to provide maintenance,
+ * support, updates, enhancements, or modifications.
+ *
+ */
+#include "files.mdh"
+
+#ifdef __SYMBIAN32__
+#ifdef __WINSCW__
+#pragma warn_unusedarg off
+#endif//__WINSCW__
+#endif//__SYMBIAN32__
+
+typedef int (*MoveFunc) _((char const *, char const *));
+typedef int (*RecurseFunc) _((char *, char *, struct stat const *, void *));
+
+#ifndef STDC_HEADERS
+extern int link _((const char *, const char *));
+extern int symlink _((const char *, const char *));
+extern int rename _((const char *, const char *));
+#endif
+
+struct recursivecmd;
+
+#include "files.pro"
+
+/**/
+static int
+ask(void)
+{
+ int a = getchar(), c;
+ for(c = a; c != EOF && c != '\n'; )
+ c = getchar();
+ return a == 'y' || a == 'Y';
+}
+
+/* sync builtin */
+
+/**/
+static int
+bin_sync(UNUSED(char *nam), UNUSED(char **args), UNUSED(Options ops), UNUSED(int func))
+{
+ sync();
+ return 0;
+}
+
+/* mkdir builtin */
+
+/**/
+int
+bin_mkdir(char *nam, char **args, Options ops, UNUSED(int func))
+{
+ mode_t oumask = umask(0);
+ mode_t mode = 0777 & ~oumask;
+ int err = 0;
+
+ umask(oumask);
+ if(OPT_ISSET(ops,'m')) {
+ char *str = OPT_ARG(ops,'m'), *ptr;
+
+ mode = zstrtol(str, &ptr, 8);
+ if(!*str || *ptr) {
+ zwarnnam(nam, "invalid mode `%s'", str, 0);
+ return 1;
+ }
+ }
+ for(; *args; args++) {
+ char *ptr = strchr(*args, 0);
+
+ while(ptr > *args + (**args == '\\') && *--ptr == '\\')
+ *ptr = 0;
+ if(OPT_ISSET(ops,'p')) {
+ char *ptr = *args;
+
+ for(;;) {
+ while(*ptr == '\\')
+ ptr++;
+ while(*ptr && *ptr != '\\')
+ ptr++;
+ if(!*ptr) {
+ err |= domkdir(nam, *args, mode, 1);
+ break;
+ } else {
+ int e;
+
+ *ptr = 0;
+ e = domkdir(nam, *args, mode | 0300, 1);
+ if(e) {
+ err = 1;
+ break;
+ }
+ *ptr = '\\';
+ }
+ }
+ } else
+ err |= domkdir(nam, *args, mode, 0);
+ }
+ return err;
+}
+
+/**/
+static int
+domkdir(char *nam, char *path, mode_t mode, int p)
+{
+ int err;
+ mode_t oumask;
+ char const *rpath = unmeta(path);
+
+ if(p) {
+ struct stat st;
+
+ if(!lstat(rpath, &st) && S_ISDIR(st.st_mode))
+ return 0;
+ }
+ oumask = umask(0);
+ err = mkdir(path, mode) ? errno : 0;
+ umask(oumask);
+ if(!err)
+ return 0;
+ zwarnnam(nam, "cannot make directory `%s': %e", path, err);
+ return 1;
+}
+
+/* rmdir builtin */
+
+/**/
+int
+bin_rmdir(char *nam, char **args, UNUSED(Options ops), UNUSED(int func))
+{
+ int err = 0;
+
+ for(; *args; args++) {
+ char *rpath = unmeta(*args);
+
+ if(!rpath) {
+ zwarnnam(nam, "%s: %e", *args, ENAMETOOLONG);
+ err = 1;
+ } else if(rmdir(rpath)) {
+ zwarnnam(nam, "cannot remove directory `%s': %e", *args, errno);
+ err = 1;
+ }
+ }
+ return err;
+}
+
+/* ln and mv builtins */
+
+//#define BIN_LN 0
+//#define BIN_MV 1
+
+#define MV_NODIRS (1<<0)
+#define MV_FORCE (1<<1)
+#define MV_INTER (1<<2)
+#define MV_ASKNW (1<<3)
+#define MV_ATOMIC (1<<4)
+
+/* bin_ln actually does three related jobs: hard linking, symbolic *
+ * linking, and renaming. If called as mv it renames, otherwise *
+ * it looks at the -s option. If hard linking, it will refuse to *
+ * attempt linking to a directory unless the -d option is given. */
+
+/**/
+int
+bin_ln(char *nam, char **args, Options ops, int func)
+{
+ MoveFunc move;
+ int flags, err = 0;
+ char **a, *ptr, *rp, *buf;
+ struct stat st;
+ size_t blen;
+
+
+ if(func == BIN_MV) {
+ move = (MoveFunc) rename;
+ flags = OPT_ISSET(ops,'f') ? 0 : MV_ASKNW;
+ flags |= MV_ATOMIC;
+ } else {
+ flags = OPT_ISSET(ops,'f') ? MV_FORCE : 0;
+#ifdef HAVE_LSTAT
+ if(OPT_ISSET(ops,'s'))
+ move = (MoveFunc) symlink;
+ else
+#endif
+ {
+ move = (MoveFunc) link;
+ if(!OPT_ISSET(ops,'d'))
+ flags |= MV_NODIRS;
+ }
+ }
+ if(OPT_ISSET(ops,'i') && !OPT_ISSET(ops,'f'))
+ flags |= MV_INTER;
+ for(a = args; a[1]; a++) ;
+ if(a != args) {
+ rp = unmeta(*a);
+ if(rp && !stat(rp, &st) && S_ISDIR(st.st_mode))
+ goto havedir;
+ }
+ if(a > args+1) {
+ zwarnnam(nam, "last of many arguments must be a directory", NULL, 0);
+ return 1;
+ }
+ if(!args[1]) {
+ ptr = strrchr(args[0], '\\');
+ if(ptr)
+ args[1] = ptr+1;
+ else
+ args[1] = args[0];
+ }
+ return domove(nam, move, args[0], args[1], flags);
+ havedir:
+ buf = ztrdup(*a);
+ *a = NULL;
+ buf = appstr(buf, "\\");
+ blen = strlen(buf);
+ for(; *args; args++) {
+
+ ptr = strrchr(*args, '\\');
+ if(ptr)
+ ptr++;
+ else
+ ptr = *args;
+
+ buf[blen] = 0;
+ buf = appstr(buf, ptr);
+ err |= domove(nam, move, *args, buf, flags);
+ }
+ zsfree(buf);
+ return err;
+}
+
+/**/
+static int
+domove(char *nam, MoveFunc move, char *p, char *q, int flags)
+{
+ struct stat st;
+ char *pbuf, *qbuf;
+
+ pbuf = ztrdup(unmeta(p));
+ qbuf = unmeta(q);
+ if(flags & MV_NODIRS) {
+ errno = EISDIR;
+ if(lstat(pbuf, &st) || S_ISDIR(st.st_mode)) {
+ zwarnnam(nam, "%s: %e", p, errno);
+ zsfree(pbuf);
+ return 1;
+ }
+ }
+ if(!lstat(qbuf, &st)) {
+ int doit = flags & MV_FORCE;
+ struct stat file_stat;
+ if(S_ISDIR(st.st_mode)) {
+ zwarnnam(nam, "%s: cannot overwrite directory", q, 0);
+ zsfree(pbuf);
+ return 1;
+ }else if(lstat(pbuf, &file_stat)){
+ zwarnnam(nam, "%e: %s", q, errno);
+ zsfree(pbuf);
+ return 1;
+ }else if(flags & MV_INTER) {
+ nicezputs(nam, stderr);
+ fputs(": replace `", stderr);
+ nicezputs(q, stderr);
+ fputs("'? ", stderr);
+ fflush(stderr);
+ if(!ask()) {
+ zsfree(pbuf);
+ return 0;
+ }
+ doit = 1;
+ } else if((flags & MV_ASKNW) &&
+ !S_ISLNK(st.st_mode) &&
+ access(qbuf, W_OK)) {
+ nicezputs(nam, stderr);
+ fputs(": replace `", stderr);
+ nicezputs(q, stderr);
+ fprintf(stderr, "', overriding mode %04o? ",
+ mode_to_octal(st.st_mode));
+ fflush(stderr);
+ if(!ask()) {
+ zsfree(pbuf);
+ return 0;
+ }
+ doit = 1;
+ }
+ if(doit && !(flags & MV_ATOMIC))
+ unlink(qbuf);
+ }
+ if(move(pbuf, qbuf)) {
+ zwarnnam(nam, "%s: %e", p, errno);
+ zsfree(pbuf);
+ return 1;
+ }
+ zsfree(pbuf);
+ return 0;
+}
+
+/* general recursion */
+
+struct recursivecmd {
+ char *nam;
+ int opt_noerr;
+ int opt_recurse;
+ int opt_safe;
+ RecurseFunc dirpre_func;
+ RecurseFunc dirpost_func;
+ RecurseFunc leaf_func;
+ void *magic;
+};
+
+/**/
+static int
+recursivecmd(char *nam, int opt_noerr, int opt_recurse, int opt_safe,
+ char **args, RecurseFunc dirpre_func, RecurseFunc dirpost_func,
+ RecurseFunc leaf_func, void *magic)
+{
+ int err = 0, len;
+ char *rp, *s;
+ struct dirsav ds;
+ struct recursivecmd reccmd;
+
+ reccmd.nam = nam;
+ reccmd.opt_noerr = opt_noerr;
+ reccmd.opt_recurse = opt_recurse;
+ reccmd.opt_safe = opt_safe;
+ reccmd.dirpre_func = dirpre_func;
+ reccmd.dirpost_func = dirpost_func;
+ reccmd.leaf_func = leaf_func;
+ reccmd.magic = magic;
+ ds.ino = ds.dev = 0;
+ ds.dirname = NULL;
+ ds.dirfd = ds.level = -1;
+ if (opt_recurse || opt_safe) {
+ if ((ds.dirfd = open(".", O_RDONLY|O_NOCTTY)) < 0 &&
+ zgetdir(&ds) && *ds.dirname != '\\')
+ ds.dirfd = open("..", O_RDONLY|O_NOCTTY);
+ }
+ for(; !errflag && !(err & 2) && *args; args++) {
+ rp = ztrdup(*args);
+ unmetafy(rp, &len);
+ if (opt_safe) {
+ s = strrchr(rp, '\\');
+ if (s && !s[1]) {
+ while (*s == '\\' && s > rp)
+ *s-- = '\0';
+ while (*s != '\\' && s > rp)
+ s--;
+ }
+ if (s && s[1]) {
+ int e;
+
+ *s = '\0';
+ e = lchdir(s > rp ? rp : "\\", &ds, 1);
+ err |= -e;
+ if (!e) {
+ struct dirsav d;
+
+ d.ino = d.dev = 0;
+ d.dirname = NULL;
+ d.dirfd = d.level = -1;
+ err |= recursivecmd_doone(&reccmd, *args, s + 1, &d, 0);
+ zsfree(d.dirname);
+ if (restoredir(&ds))
+ err |= 2;
+ } else if(!opt_noerr)
+ zwarnnam(nam, "%s: %e", *args, errno);
+ } else
+ err |= recursivecmd_doone(&reccmd, *args, rp, &ds, 0);
+ } else
+ err |= recursivecmd_doone(&reccmd, *args, rp, &ds, 1);
+ zfree(rp, len + 1);
+ }
+ if ((err & 2) && ds.dirfd >= 0 && restoredir(&ds) && zchdir(pwd)) {
+ zsfree(pwd);
+ pwd = ztrdup("\\");
+ chdir(pwd);
+ }
+ if (ds.dirfd >= 0)
+ close(ds.dirfd);
+ zsfree(ds.dirname);
+ return !!err;
+}
+
+/* rm builtin */
+
+struct rmmagic {
+ char *nam;
+ int opt_force;
+ int opt_interact;
+ int opt_unlinkdir;
+};
+
+/**/
+static int
+recursivecmd_doone(struct recursivecmd const *reccmd,
+ char *arg, char *rp, struct dirsav *ds, int first)
+{
+ struct stat st, *sp = NULL;
+ struct rmmagic *rmm = reccmd->magic;
+
+ if( (reccmd->opt_recurse || rmm->opt_unlinkdir) && !lstat(rp, &st)) {
+ if(S_ISDIR(st.st_mode))
+ return recursivecmd_dorec(reccmd, arg, rp, &st, ds, first);
+ sp = &st;
+ }
+ return reccmd->leaf_func(arg, rp, sp, reccmd->magic);
+}
+
+/**/
+static int
+recursivecmd_dorec(struct recursivecmd const *reccmd,
+ char *arg, char *rp, struct stat const *sp, struct dirsav *ds, int first)
+{
+ char *fn;
+ DIR *d;
+ int err, err1;
+ struct dirsav dsav;
+ char *files = NULL;
+ int fileslen = 0;
+
+ err1 = reccmd->dirpre_func(arg, rp, sp, reccmd->magic);
+ if(err1 & 2)
+ return 2;
+
+ err = -lchdir(rp, ds, !first);
+ if (err) {
+ if(!reccmd->opt_noerr)
+ zwarnnam(reccmd->nam, "%s: %e", arg, errno);
+ return err;
+ }
+ err = err1;
+
+ dsav.ino = dsav.dev = 0;
+ dsav.dirname = NULL;
+ dsav.dirfd = dsav.level = -1;
+ d = opendir(".");
+ if(!d) {
+ if(!reccmd->opt_noerr)
+ zwarnnam(reccmd->nam, "%s: %e", arg, errno);
+ err = 1;
+ } else {
+ int arglen = strlen(arg) + 1;
+
+ while (!errflag && (fn = zreaddir(d, 1))) {
+ int l = strlen(fn) + 1;
+ files = hrealloc(files, fileslen, fileslen + l);
+ strcpy(files + fileslen, fn);
+ fileslen += l;
+ }
+ closedir(d);
+ for (fn = files; !errflag && !(err & 2) && fn < files + fileslen;) {
+ int l = strlen(fn) + 1;
+ int is_dir=0;
+
+ VARARR(char, narg, arglen + l);
+ strcpy(narg,arg);
+ narg[arglen-1] = '\\';
+ strcpy(narg + arglen, fn);
+ unmetafy(fn, NULL);
+#ifdef __SYMBIAN32__
+ {
+ struct stat sta;
+ if(stat(fn, &sta)==0 && S_ISDIR(sta.st_mode))
+ is_dir=1;
+ }
+#endif
+ err |= recursivecmd_doone(reccmd, narg, fn, &dsav, 0);
+
+ if(is_dir)
+ ds=&dsav;
+ fn += l;
+ }
+ hrealloc(files, fileslen, 0);
+ }
+ zsfree(dsav.dirname);
+ if (err & 2)
+ return 2;
+ if (restoredir(ds)) {
+ if(!reccmd->opt_noerr)
+ zwarnnam(reccmd->nam, "failed to return to previous directory: %e",
+ NULL, errno);
+ return 2;
+ }
+ return err | reccmd->dirpost_func(arg, rp, sp, reccmd->magic);
+}
+
+/**/
+static int
+recurse_donothing(UNUSED(char *arg), UNUSED(char *rp), UNUSED(struct stat const *sp), UNUSED(void *magic))
+{
+ return 0;
+}
+
+
+/**/
+static int
+rm_leaf(char *arg, char *rp, struct stat const *sp, void *magic)
+{
+ struct rmmagic *rmm = magic;
+ struct stat st;
+
+ if(!rmm->opt_unlinkdir || !rmm->opt_force) {
+ if(!sp) {
+ if(!lstat(rp, &st))
+ sp = &st;
+ }
+ if(sp) {
+ if(!rmm->opt_unlinkdir && S_ISDIR(sp->st_mode)) {
+#ifndef __SYMBIAN32__
+ if(rmm->opt_force)
+ return 0;
+#endif
+ zwarnnam(rmm->nam, "%s: %e", arg, EISDIR);
+ return 1;
+ }
+ if(rmm->opt_interact) {
+ nicezputs(rmm->nam, stderr);
+ fputs(": remove `", stderr);
+ nicezputs(arg, stderr);
+ fputs("'? ", stderr);
+ fflush(stderr);
+ if(!ask())
+ return 0;
+ } else if(!rmm->opt_force &&
+ !S_ISLNK(sp->st_mode) &&
+ access(rp, W_OK)) {
+ nicezputs(rmm->nam, stderr);
+ fputs(": remove `", stderr);
+ nicezputs(arg, stderr);
+ fprintf(stderr, "', overriding mode %04o? ",
+ mode_to_octal(sp->st_mode));
+ fflush(stderr);
+ if(!ask())
+ return 0;
+ }
+ }
+ }
+ if(unlink(rp) && !rmm->opt_force) {
+ zwarnnam(rmm->nam, "%s: %e", arg, errno);
+ return 1;
+ }
+ return 0;
+}
+
+/**/
+static int
+rm_dirpost(char *arg, char *rp, UNUSED(struct stat const *sp), void *magic)
+{
+ struct rmmagic *rmm = magic;
+
+ if(rmm->opt_interact) {
+ nicezputs(rmm->nam, stderr);
+ fputs(": remove `", stderr);
+ nicezputs(arg, stderr);
+ fputs("'? ", stderr);
+ fflush(stderr);
+ if(!ask())
+ return 0;
+ }
+ if(rmdir(rp) && !rmm->opt_force) {
+ zwarnnam(rmm->nam, "%s: %e", arg, errno);
+ return 1;
+ }
+ return 0;
+}
+
+/**/
+int
+bin_rm(char *nam, char **args, Options ops, UNUSED(int func))
+{
+ struct rmmagic rmm;
+ int err;
+
+ rmm.nam = nam;
+ rmm.opt_force = OPT_ISSET(ops,'f');
+ rmm.opt_interact = OPT_ISSET(ops,'i') && !OPT_ISSET(ops,'f');
+ rmm.opt_unlinkdir = OPT_ISSET(ops,'d');
+ err = recursivecmd(nam, OPT_ISSET(ops,'f'),
+ OPT_ISSET(ops,'r') && !OPT_ISSET(ops,'d'),
+ OPT_ISSET(ops,'s'),
+ args, recurse_donothing, rm_dirpost, rm_leaf, &rmm);
+ return OPT_ISSET(ops,'f') ? 0 : err;
+}
+
+/* chown builtin */
+
+struct chownmagic {
+ char *nam;
+ uid_t uid;
+ gid_t gid;
+};
+
+/**/
+static int
+chown_dochown(char *arg, char *rp, UNUSED(struct stat const *sp), void *magic)
+{
+ struct chownmagic *chm = magic;
+
+ if(lchown(rp, chm->uid, chm->gid)) {
+ zwarnnam(chm->nam, "%s: %e", arg, errno);
+ return 1;
+ }
+ return 0;
+}
+
+/**/
+static unsigned long getnumeric(char *p, int *errp)
+{
+ unsigned long ret;
+
+ if(*p < '0' || *p > '9') {
+ *errp = 1;
+ return 0;
+ }
+ ret = strtoul(p, &p, 10);
+ *errp = !!*p;
+ return ret;
+}
+
+//enum { BIN_CHOWN, BIN_CHGRP };
+
+/**/
+int
+bin_chown(char *nam, char **args, Options ops, int func)
+{
+ struct chownmagic chm;
+ char *uspec = ztrdup(*args), *p = uspec;
+ char *end;
+
+ chm.nam = nam;
+ if(func == BIN_CHGRP) {
+ chm.uid = (uid_t)-1;
+ goto dogroup;
+ }
+ end = strchr(uspec, ':');
+ if(!end)
+ end = strchr(uspec, '.');
+ if(end == uspec) {
+ chm.uid = (uid_t)-1;
+ p++;
+ goto dogroup;
+ } else {
+ struct passwd *pwd;
+ if(end)
+ *end = 0;
+ pwd = getpwnam(p);
+ if(pwd)
+ chm.uid = pwd->pw_uid;
+ else {
+ int err;
+ chm.uid = getnumeric(p, &err);
+ if(err) {
+ zwarnnam(nam, "%s: no such user", p, 0);
+ free(uspec);
+ return 1;
+ }
+ }
+ if(end) {
+ p = end+1;
+ if(!*p) {
+ if(!pwd && !(pwd = getpwuid(chm.uid))) {
+ zwarnnam(nam, "%s: no such user", uspec, 0);
+ free(uspec);
+ return 1;
+ }
+ chm.gid = pwd->pw_gid;
+ } else if(p[0] == ':' && !p[1]) {
+ chm.gid = (gid_t)-1;
+ } else {
+ struct group *grp;
+ dogroup:
+ grp = getgrnam(p);
+ if(grp)
+ chm.gid = grp->gr_gid;
+ else {
+ int err;
+ chm.gid = getnumeric(p, &err);
+ if(err) {
+ zwarnnam(nam, "%s: no such group", p, 0);
+ free(uspec);
+ return 1;
+ }
+ }
+ }
+ } else
+ chm.gid = (gid_t)-1;
+ }
+ free(uspec);
+ return recursivecmd(nam, 0, OPT_ISSET(ops,'R'), OPT_ISSET(ops,'s'),
+ args + 1, chown_dochown, recurse_donothing, chown_dochown, &chm);
+}
+
+/* module paraphernalia */
+
+#ifdef HAVE_LSTAT
+# define LN_OPTS "dfis"
+#else
+# define LN_OPTS "dfi"
+#endif
+
+static struct builtin bintab[] = {
+ BUILTIN("chgrp", 0, bin_chown, 2, -1, BIN_CHGRP, "Rs", NULL),
+ BUILTIN("chown", 0, bin_chown, 2, -1, BIN_CHOWN, "Rs", NULL),
+ BUILTIN("ln", 0, bin_ln, 1, -1, BIN_LN, LN_OPTS, NULL),
+// BUILTIN("mkdir", 0, bin_mkdir, 1, -1, 0, "pm:", NULL),
+ BUILTIN("mv", 0, bin_ln, 2, -1, BIN_MV, "fi", NULL),
+ BUILTIN("rm", 0, bin_rm, 1, -1, 0, "dfirs", NULL),
+ BUILTIN("rmdir", 0, bin_rmdir, 1, -1, 0, NULL, NULL),
+ BUILTIN("sync", 0, bin_sync, 0, 0, 0, NULL, NULL),
+};
+
+/**/
+int
+setup_(UNUSED(Module m))
+{
+ return 0;
+}
+
+/**/
+int
+boot_(Module m)
+{
+ return !addbuiltins(m->nam, bintab, sizeof(bintab)/sizeof(*bintab));
+}
+
+/**/
+int
+cleanup_(Module m)
+{
+ deletebuiltins(m->nam, bintab, sizeof(bintab)/sizeof(*bintab));
+ return 0;
+}
+
+/**/
+int
+finish_(UNUSED(Module m))
+{
+ return 0;
+}