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Diffstat (limited to 'bin/sh/miscbltin.c')
| -rw-r--r-- | bin/sh/miscbltin.c | 219 |
1 files changed, 219 insertions, 0 deletions
diff --git a/bin/sh/miscbltin.c b/bin/sh/miscbltin.c new file mode 100644 index 000000000000..b14da674a166 --- /dev/null +++ b/bin/sh/miscbltin.c @@ -0,0 +1,219 @@ +/*- + * Copyright (c) 1991 The Regents of the University of California. + * All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Kenneth Almquist. + * + * 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. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. 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. + */ + +#ifndef lint +/*static char sccsid[] = "from: @(#)miscbltin.c 5.2 (Berkeley) 3/13/91";*/ +static char rcsid[] = "miscbltin.c,v 1.5 1993/08/01 18:57:56 mycroft Exp"; +#endif /* not lint */ + +/* + * Miscelaneous builtins. + */ + +#include <sys/types.h> +#include <sys/stat.h> +#include "shell.h" +#include "options.h" +#include "var.h" +#include "output.h" +#include "memalloc.h" +#include "error.h" +#include "mystring.h" + +#undef eflag + +extern char **argptr; /* argument list for builtin command */ + + +/* + * The read builtin. The -e option causes backslashes to escape the + * following character. + * + * This uses unbuffered input, which may be avoidable in some cases. + */ + +readcmd(argc, argv) char **argv; { + char **ap; + int backslash; + char c; + int eflag; + char *prompt; + char *ifs; + char *p; + int startword; + int status; + int i; + + eflag = 0; + prompt = NULL; + while ((i = nextopt("ep:")) != '\0') { + if (i == 'p') + prompt = optarg; + else + eflag = 1; + } + if (prompt && isatty(0)) { + out2str(prompt); + flushall(); + } + if ((ap = argptr) == NULL) + error("arg count"); + if ((ifs = bltinlookup("IFS", 1)) == NULL) + ifs = nullstr; + status = 0; + startword = 1; + backslash = 0; + STARTSTACKSTR(p); + for (;;) { + if (read(0, &c, 1) != 1) { + status = 1; + break; + } + if (c == '\0') + continue; + if (backslash) { + backslash = 0; + if (c != '\n') + STPUTC(c, p); + continue; + } + if (eflag && c == '\\') { + backslash++; + continue; + } + if (c == '\n') + break; + if (startword && *ifs == ' ' && strchr(ifs, c)) { + continue; + } + startword = 0; + if (backslash && c == '\\') { + if (read(0, &c, 1) != 1) { + status = 1; + break; + } + STPUTC(c, p); + } else if (ap[1] != NULL && strchr(ifs, c) != NULL) { + STACKSTRNUL(p); + setvar(*ap, stackblock(), 0); + ap++; + startword = 1; + STARTSTACKSTR(p); + } else { + STPUTC(c, p); + } + } + STACKSTRNUL(p); + setvar(*ap, stackblock(), 0); + while (*++ap != NULL) + setvar(*ap, nullstr, 0); + return status; +} + + + +umaskcmd(argc, argv) char **argv; { + extern void *setmode(); + extern mode_t getmode(); + char *ap; + int mask; + int i; + int symbolic_mode = 0; + + while ((i = nextopt("S")) != '\0') { + symbolic_mode = 1; + } + + INTOFF; + mask = umask(0); + umask(mask); + INTON; + + if ((ap = *argptr) == NULL) { + if (symbolic_mode) { + char u[4], g[4], o[4]; + + i = 0; + if ((mask & S_IRUSR) == 0) + u[i++] = 'r'; + if ((mask & S_IWUSR) == 0) + u[i++] = 'w'; + if ((mask & S_IXUSR) == 0) + u[i++] = 'x'; + u[i] = '\0'; + + i = 0; + if ((mask & S_IRGRP) == 0) + g[i++] = 'r'; + if ((mask & S_IWGRP) == 0) + g[i++] = 'w'; + if ((mask & S_IXGRP) == 0) + g[i++] = 'x'; + g[i] = '\0'; + + i = 0; + if ((mask & S_IROTH) == 0) + o[i++] = 'r'; + if ((mask & S_IWOTH) == 0) + o[i++] = 'w'; + if ((mask & S_IXOTH) == 0) + o[i++] = 'x'; + o[i] = '\0'; + + out1fmt("u=%s,g=%s,o=%s\n", u, g, o); + } else { + out1fmt("%.4o\n", mask); + } + } else { + if (isdigit(*ap)) { + mask = 0; + do { + if (*ap >= '8' || *ap < '0') + error("Illegal number: %s", argv[1]); + mask = (mask << 3) + (*ap - '0'); + } while (*++ap != '\0'); + umask(mask); + } else { + void *set; + if ((set = setmode (ap)) == 0) + error("Illegal number: %s", ap); + + mask = getmode (set, ~mask & 0777); + umask(~mask & 0777); + } + } + return 0; +} |