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12472: limited pathconf support
This commit is contained in:
Clint Adams
parent
fd15ea0fb5
commit
30e35ee2ed
4 changed files with 333 additions and 78 deletions
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@ -1,3 +1,9 @@
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2000-08-02 Clint Adams <schizo@debian.org>
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* 12472: configure.in, Src/Modules/files.c,
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Src/Modules/parameter.c: use pathconf() instead
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of PATH_MAX if possible.
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2000-08-02 Adam Spiers <adam@spiers.net>
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* 12486: Completion/Base/{.distfiles,_cache_invalid,_retrieve_cache,
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@ -30,6 +30,7 @@
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#include "files.mdh"
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typedef int (*MoveFunc) _((char const *, char const *));
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typedef int (*RecurseFunc) _((char *, char *, struct stat const *, void *));
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#ifndef STDC_HEADERS
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extern int link _((const char *, const char *));
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@ -37,6 +38,8 @@ extern int symlink _((const char *, const char *));
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extern int rename _((const char *, const char *));
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#endif
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struct recursivecmd;
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#include "files.pro"
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/**/
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@ -68,6 +71,9 @@ bin_mkdir(char *nam, char **args, char *ops, int func)
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mode_t oumask = umask(0);
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mode_t mode = 0777 & ~oumask;
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int err = 0;
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#ifdef HAVE_PATHCONF
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int pathmax = 0;
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#endif
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umask(oumask);
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if(ops['m']) {
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@ -88,11 +94,20 @@ bin_mkdir(char *nam, char **args, char *ops, int func)
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while(ptr > *args + (**args == '/') && *--ptr == '/')
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*ptr = 0;
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if(ztrlen(*args) > PATH_MAX - 1) {
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#ifdef HAVE_PATHCONF
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if((pathmax = pathconf(*args,_PC_PATH_MAX)) == -1) {
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zwarnnam(nam, "%s: %e", *args, errno);
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err = 1;
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continue;
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}
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else if(ztrlen(*args) > pathmax - 1) {
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#else
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if(ztrlen(*args) > PATH_MAX - 1) {
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#endif
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zwarnnam(nam, "%s: %e", *args, ENAMETOOLONG);
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err = 1;
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continue;
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}
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}
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if(ops['p']) {
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char *ptr = *args;
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@ -195,18 +210,18 @@ bin_ln(char *nam, char **args, char *ops, int func)
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if(func == BIN_MV) {
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move = rename;
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move = (MoveFunc) rename;
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flags = ops['f'] ? 0 : MV_ASKNW;
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flags |= MV_ATOMIC;
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} else {
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flags = ops['f'] ? MV_FORCE : 0;
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#ifdef HAVE_LSTAT
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if(ops['s'])
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move = symlink;
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move = (MoveFunc) symlink;
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else
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#endif
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{
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move = link;
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move = (MoveFunc) link;
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if(!ops['d'])
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flags |= MV_NODIRS;
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}
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@ -312,20 +327,42 @@ domove(char *nam, MoveFunc move, char *p, char *q, int flags)
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return 0;
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}
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/* rm builtin */
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/* general recursion */
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struct recursivecmd {
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char *nam;
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int opt_noerr;
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int opt_recurse;
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int opt_safe;
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RecurseFunc dirpre_func;
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RecurseFunc dirpost_func;
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RecurseFunc leaf_func;
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void *magic;
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};
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/**/
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static int
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bin_rm(char *nam, char **args, char *ops, int func)
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recursivecmd(char *nam, int opt_noerr, int opt_recurse, int opt_safe,
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char **args, RecurseFunc dirpre_func, RecurseFunc dirpost_func,
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RecurseFunc leaf_func, void *magic)
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{
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int err = 0, len;
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char *rp, *s;
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struct dirsav ds;
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struct recursivecmd reccmd;
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reccmd.nam = nam;
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reccmd.opt_noerr = opt_noerr;
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reccmd.opt_recurse = opt_recurse;
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reccmd.opt_safe = opt_safe;
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reccmd.dirpre_func = dirpre_func;
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reccmd.dirpost_func = dirpost_func;
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reccmd.leaf_func = leaf_func;
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reccmd.magic = magic;
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ds.ino = ds.dev = 0;
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ds.dirname = NULL;
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ds.dirfd = ds.level = -1;
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if (ops['r'] || ops['s']) {
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if (opt_recurse || opt_safe) {
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if ((ds.dirfd = open(".", O_RDONLY|O_NOCTTY)) < 0 &&
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zgetdir(&ds) && *ds.dirname != '/')
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ds.dirfd = open("..", O_RDONLY|O_NOCTTY);
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@ -333,7 +370,7 @@ bin_rm(char *nam, char **args, char *ops, int func)
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for(; !errflag && !(err & 2) && *args; args++) {
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rp = ztrdup(*args);
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unmetafy(rp, &len);
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if (ops['s']) {
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if (opt_safe) {
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s = strrchr(rp, '/');
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if (s && !s[1]) {
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while (*s == '/' && s > rp)
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@ -353,16 +390,16 @@ bin_rm(char *nam, char **args, char *ops, int func)
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d.ino = d.dev = 0;
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d.dirname = NULL;
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d.dirfd = d.level = -1;
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err |= dorm(nam, *args, s + 1, ops, &d, 0);
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err |= recursivecmd_doone(&reccmd, *args, s + 1, &d, 0);
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zsfree(d.dirname);
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if (restoredir(&ds))
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err |= 2;
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} else
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} else if(!opt_noerr)
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zwarnnam(nam, "%s: %e", *args, errno);
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} else
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err |= dorm(nam, *args, rp, ops, &ds, 0);
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err |= recursivecmd_doone(&reccmd, *args, rp, &ds, 0);
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} else
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err |= dorm(nam, *args, rp, ops, &ds, 1);
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err |= recursivecmd_doone(&reccmd, *args, rp, &ds, 1);
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zfree(rp, len + 1);
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}
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if ((err & 2) && ds.dirfd >= 0 && restoredir(&ds) && zchdir(pwd)) {
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@ -373,76 +410,55 @@ bin_rm(char *nam, char **args, char *ops, int func)
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if (ds.dirfd >= 0)
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close(ds.dirfd);
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zsfree(ds.dirname);
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return ops['f'] ? 0 : !!err;
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return !!err;
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}
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/**/
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static int
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dorm(char *nam, char *arg, char *rp, char *ops, struct dirsav *ds, int first)
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recursivecmd_doone(struct recursivecmd const *reccmd,
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char *arg, char *rp, struct dirsav *ds, int first)
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{
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struct stat st;
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struct stat st, *sp = NULL;
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if((!ops['d'] || !ops['f']) && !lstat(rp, &st)) {
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if(!ops['d'] && S_ISDIR(st.st_mode)) {
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if(ops['r'])
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return dormr(nam, arg, rp, ops, ds, first);
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if(!ops['f'])
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zwarnnam(nam, "%s: %e", arg, EISDIR);
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return 1;
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}
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if(!ops['f'] && ops['i']) {
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nicezputs(nam, stderr);
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fputs(": remove `", stderr);
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nicezputs(arg, stderr);
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fputs("'? ", stderr);
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fflush(stderr);
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if(!ask())
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return 0;
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} else if(!ops['f'] &&
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!S_ISLNK(st.st_mode) &&
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access(rp, W_OK)) {
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nicezputs(nam, stderr);
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fputs(": remove `", stderr);
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nicezputs(arg, stderr);
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fprintf(stderr, "', overriding mode %04o? ",
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mode_to_octal(st.st_mode));
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fflush(stderr);
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if(!ask())
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return 0;
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}
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if(reccmd->opt_recurse && !lstat(rp, &st)) {
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if(S_ISDIR(st.st_mode))
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return recursivecmd_dorec(reccmd, arg, rp, &st, ds, first);
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sp = &st;
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}
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if(!unlink(rp))
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return 0;
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if(!ops['f'])
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zwarnnam(nam, "%s: %e", arg, errno);
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return 1;
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return reccmd->leaf_func(arg, rp, sp, reccmd->magic);
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}
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/**/
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static int
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dormr(char *nam, char *arg, char *rp, char *ops, struct dirsav *ds, int first)
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recursivecmd_dorec(struct recursivecmd const *reccmd,
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char *arg, char *rp, struct stat const *sp, struct dirsav *ds, int first)
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{
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char *fn;
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DIR *d;
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int err;
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int err, err1;
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struct dirsav dsav;
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char *files = NULL;
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int fileslen = 0;
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err1 = reccmd->dirpre_func(arg, rp, sp, reccmd->magic);
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if(err1 & 2)
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return 2;
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err = -lchdir(rp, ds, !first);
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if (err) {
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if (!ops['f'])
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zwarnnam(nam, "%s: %e", arg, errno);
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if(!reccmd->opt_noerr)
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zwarnnam(reccmd->nam, "%s: %e", arg, errno);
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return err;
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}
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err = err1;
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dsav.ino = dsav.dev = 0;
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dsav.dirname = NULL;
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dsav.dirfd = dsav.level = -1;
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d = opendir(".");
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if(!d) {
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if(!ops['f'])
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zwarnnam(nam, "%s: %e", arg, errno);
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if(!reccmd->opt_noerr)
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zwarnnam(reccmd->nam, "%s: %e", arg, errno);
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err = 1;
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} else {
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int arglen = strlen(arg) + 1;
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@ -462,7 +478,7 @@ dormr(char *nam, char *arg, char *rp, char *ops, struct dirsav *ds, int first)
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narg[arglen-1] = '/';
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strcpy(narg + arglen, fn);
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unmetafy(fn, NULL);
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err |= dorm(nam, narg, fn, ops, &dsav, 0);
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err |= recursivecmd_doone(reccmd, narg, fn, &dsav, 0);
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fn += l;
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}
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hrealloc(files, fileslen, 0);
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@ -471,25 +487,222 @@ dormr(char *nam, char *arg, char *rp, char *ops, struct dirsav *ds, int first)
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if (err & 2)
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return 2;
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if (restoredir(ds)) {
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if(!ops['f'])
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zwarnnam(nam, "failed to return to previous directory: %e",
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if(!reccmd->opt_noerr)
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zwarnnam(reccmd->nam, "failed to return to previous directory: %e",
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NULL, errno);
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return 2;
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}
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if(!ops['f'] && ops['i']) {
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nicezputs(nam, stderr);
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return err | reccmd->dirpost_func(arg, rp, sp, reccmd->magic);
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}
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/**/
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static int
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recurse_donothing(char *arg, char *rp, struct stat const *sp, void *magic)
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{
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return 0;
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}
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/* rm builtin */
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struct rmmagic {
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char *nam;
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int opt_force;
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int opt_interact;
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int opt_unlinkdir;
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};
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/**/
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static int
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rm_leaf(char *arg, char *rp, struct stat const *sp, void *magic)
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{
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struct rmmagic *rmm = magic;
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struct stat st;
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if(!rmm->opt_unlinkdir || !rmm->opt_force) {
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if(!sp) {
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if(!lstat(rp, &st))
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sp = &st;
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}
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if(sp) {
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if(!rmm->opt_unlinkdir && S_ISDIR(sp->st_mode)) {
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if(rmm->opt_force)
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return 0;
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zwarnnam(rmm->nam, "%s: %e", arg, EISDIR);
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return 1;
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}
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if(rmm->opt_interact) {
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nicezputs(rmm->nam, stderr);
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fputs(": remove `", stderr);
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nicezputs(arg, stderr);
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fputs("'? ", stderr);
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fflush(stderr);
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if(!ask())
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return 0;
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} else if(!rmm->opt_force &&
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!S_ISLNK(sp->st_mode) &&
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access(rp, W_OK)) {
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nicezputs(rmm->nam, stderr);
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fputs(": remove `", stderr);
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nicezputs(arg, stderr);
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fprintf(stderr, "', overriding mode %04o? ",
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mode_to_octal(sp->st_mode));
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fflush(stderr);
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if(!ask())
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return 0;
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}
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}
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}
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if(unlink(rp) && !rmm->opt_force) {
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zwarnnam(rmm->nam, "%s: %e", arg, errno);
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return 1;
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}
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return 0;
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}
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/**/
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static int
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rm_dirpost(char *arg, char *rp, struct stat const *sp, void *magic)
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{
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struct rmmagic *rmm = magic;
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if(rmm->opt_interact) {
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nicezputs(rmm->nam, stderr);
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fputs(": remove `", stderr);
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nicezputs(arg, stderr);
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fputs("'? ", stderr);
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fflush(stderr);
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if(!ask())
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return err;
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return 0;
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}
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if(!rmdir(rp))
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return err;
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if(!ops['f'])
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zwarnnam(nam, "%s: %e", arg, errno);
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return 1;
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if(rmdir(rp) && !rmm->opt_force) {
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zwarnnam(rmm->nam, "%s: %e", arg, errno);
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return 1;
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}
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return 0;
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}
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/**/
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static int
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bin_rm(char *nam, char **args, char *ops, int func)
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{
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struct rmmagic rmm;
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int err;
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rmm.nam = nam;
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rmm.opt_force = ops['f'];
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rmm.opt_interact = ops['i'] && !ops['f'];
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rmm.opt_unlinkdir = ops['d'];
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err = recursivecmd(nam, ops['f'], ops['r'] && !ops['d'], ops['s'],
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args, recurse_donothing, rm_dirpost, rm_leaf, &rmm);
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return ops['f'] ? 0 : err;
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}
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/* chown builtin */
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struct chownmagic {
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char *nam;
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uid_t uid;
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gid_t gid;
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};
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/**/
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static int
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chown_dochown(char *arg, char *rp, struct stat const *sp, void *magic)
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{
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struct chownmagic *chm = magic;
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if(lchown(rp, chm->uid, chm->gid)) {
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zwarnnam(chm->nam, "%s: %e", arg, errno);
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return 1;
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}
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return 0;
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}
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/**/
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static unsigned long getnumeric(char *p, int *errp)
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{
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unsigned long ret;
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|
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if(*p < '0' || *p > '9') {
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*errp = 1;
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return 0;
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}
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ret = strtoul(p, &p, 10);
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*errp = !!*p;
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return ret;
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}
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enum { BIN_CHOWN, BIN_CHGRP };
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/**/
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static int
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bin_chown(char *nam, char **args, char *ops, int func)
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{
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struct chownmagic chm;
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char *uspec = ztrdup(*args), *p = uspec;
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char *end;
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chm.nam = nam;
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if(func == BIN_CHGRP) {
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chm.uid = -1;
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goto dogroup;
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}
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end = strchr(uspec, ':');
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if(!end)
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end = strchr(uspec, '.');
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if(end == uspec) {
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chm.uid = -1;
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p++;
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goto dogroup;
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} else {
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struct passwd *pwd;
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if(end)
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*end = 0;
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pwd = getpwnam(p);
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if(pwd)
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chm.uid = pwd->pw_uid;
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else {
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int err;
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chm.uid = getnumeric(p, &err);
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if(err) {
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zwarnnam(nam, "%s: no such user", p, 0);
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free(uspec);
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return 1;
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}
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}
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if(end) {
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p = end+1;
|
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if(!*p) {
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if(!pwd && !(pwd = getpwuid(chm.uid))) {
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zwarnnam(nam, "%s: no such user", uspec, 0);
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free(uspec);
|
||||
return 1;
|
||||
}
|
||||
chm.gid = pwd->pw_gid;
|
||||
} else if(p[0] == ':' && !p[1]) {
|
||||
chm.gid = -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 = -1;
|
||||
}
|
||||
free(uspec);
|
||||
return recursivecmd(nam, 0, ops['R'], ops['s'],
|
||||
args + 1, chown_dochown, recurse_donothing, chown_dochown, &chm);
|
||||
}
|
||||
|
||||
/* module paraphernalia */
|
||||
|
|
@ -501,28 +714,41 @@ dormr(char *nam, char *arg, char *rp, char *ops, struct dirsav *ds, int first)
|
|||
#endif
|
||||
|
||||
static struct builtin bintab[] = {
|
||||
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),
|
||||
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
|
||||
boot_files(Module m)
|
||||
setup_(Module m)
|
||||
{
|
||||
return 0;
|
||||
}
|
||||
|
||||
/**/
|
||||
int
|
||||
boot_(Module m)
|
||||
{
|
||||
return !addbuiltins(m->nam, bintab, sizeof(bintab)/sizeof(*bintab));
|
||||
}
|
||||
|
||||
#ifdef MODULE
|
||||
|
||||
/**/
|
||||
int
|
||||
cleanup_files(Module m)
|
||||
cleanup_(Module m)
|
||||
{
|
||||
deletebuiltins(m->nam, bintab, sizeof(bintab)/sizeof(*bintab));
|
||||
return 0;
|
||||
}
|
||||
#endif
|
||||
|
||||
/**/
|
||||
int
|
||||
finish_(Module m)
|
||||
{
|
||||
return 0;
|
||||
}
|
||||
|
|
|
|||
|
|
@ -1397,7 +1397,17 @@ scanpmjobdirs(HashTable ht, ScanFunc func, int flags)
|
|||
static void
|
||||
setpmnameddir(Param pm, char *value)
|
||||
{
|
||||
#ifdef HAVE_PATHCONF
|
||||
int pathmax = 0;
|
||||
|
||||
pathmax = pathconf(value, _PC_PATH_MAX);
|
||||
if (pathmax == -1) {
|
||||
zwarn("%s: %e", value, errno);
|
||||
}
|
||||
else if (!value || *value != '/' || strlen(value) >= pathmax)
|
||||
#else
|
||||
if (!value || *value != '/' || strlen(value) >= PATH_MAX)
|
||||
#endif
|
||||
zwarn("invalid value: %s", value, 0);
|
||||
else
|
||||
adduserdir(pm->nam, value, 0, 1);
|
||||
|
|
@ -1420,6 +1430,9 @@ setpmnameddirs(Param pm, HashTable ht)
|
|||
{
|
||||
int i;
|
||||
HashNode hn, next, hd;
|
||||
#ifdef HAVE_PATHCONF
|
||||
int pathmax = 0;
|
||||
#endif
|
||||
|
||||
if (!ht)
|
||||
return;
|
||||
|
|
@ -1442,8 +1455,17 @@ setpmnameddirs(Param pm, HashTable ht)
|
|||
v.arr = NULL;
|
||||
v.pm = (Param) hn;
|
||||
|
||||
#ifdef HAVE_PATHCONF
|
||||
if((pathmax = pathconf(val, _PC_PATH_MAX)) == -1)
|
||||
zwarn("%s: %e", val, errno);
|
||||
else
|
||||
#endif
|
||||
if (!(val = getstrvalue(&v)) || *val != '/' ||
|
||||
#ifdef HAVE_PATHCONF
|
||||
strlen(val) >= PATH_MAX)
|
||||
#else
|
||||
strlen(val) >= pathmax)
|
||||
#endif
|
||||
zwarn("invalid value: %s", val, 0);
|
||||
else
|
||||
adduserdir(hn->nam, val, 0, 1);
|
||||
|
|
|
|||
|
|
@ -863,7 +863,8 @@ AC_CHECK_FUNCS(strftime difftime gettimeofday \
|
|||
uname \
|
||||
signgam \
|
||||
putenv getenv \
|
||||
brk sbrk)
|
||||
brk sbrk \
|
||||
pathconf)
|
||||
AC_FUNC_STRCOLL
|
||||
|
||||
if test $ac_cv_func_setpgrp = yes; then
|
||||
|
|
|
|||
Loading…
Reference in a new issue