496e7f4568
option for installing distributions and/or packages to somewhere other than /, say for a case where you're installing to an external disk on some other machine's behalf. More miscellaneous fixes to various problems I stumbled across while adding this stuff.
355 lines
7.6 KiB
C
355 lines
7.6 KiB
C
/*
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* Miscellaneous support routines..
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*
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* $Id: misc.c,v 1.21 1996/07/08 08:54:30 jkh Exp $
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*
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* Copyright (c) 1995
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* Jordan Hubbard. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer,
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* verbatim and that no modifications are made prior to this
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* point in the file.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY JORDAN HUBBARD ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL JORDAN HUBBARD OR HIS PETS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, LIFE OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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*/
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#include "sysinstall.h"
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#include <ctype.h>
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#include <unistd.h>
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#include <sys/stat.h>
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#include <sys/errno.h>
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#include <sys/file.h>
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#include <sys/types.h>
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#include <dirent.h>
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#include <sys/wait.h>
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#include <sys/param.h>
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#include <sys/mount.h>
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#include <sys/reboot.h>
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#include <sys/dkbad.h>
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#include <sys/disklabel.h>
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/* Quick check to see if a file is readable */
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Boolean
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file_readable(char *fname)
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{
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if (!access(fname, F_OK))
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return TRUE;
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return FALSE;
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}
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/* Quick check to see if a file is executable */
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Boolean
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file_executable(char *fname)
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{
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if (!access(fname, X_OK))
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return TRUE;
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return FALSE;
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}
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/* Concatenate two strings into static storage */
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char *
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string_concat(char *one, char *two)
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{
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static char tmp[FILENAME_MAX];
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/* Yes, we're deliberately cavalier about not checking for overflow */
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strcpy(tmp, one);
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strcat(tmp, two);
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return tmp;
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}
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/* Concatenate three strings into static storage */
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char *
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string_concat3(char *one, char *two, char *three)
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{
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static char tmp[FILENAME_MAX];
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/* Yes, we're deliberately cavalier about not checking for overflow */
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strcpy(tmp, one);
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strcat(tmp, two);
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strcat(tmp, three);
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return tmp;
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}
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/* Clip the whitespace off the end of a string */
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char *
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string_prune(char *str)
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{
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int len = str ? strlen(str) : 0;
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while (len && isspace(str[len - 1]))
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str[--len] = '\0';
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return str;
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}
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/* run the whitespace off the front of a string */
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char *
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string_skipwhite(char *str)
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{
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while (*str && isspace(*str))
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++str;
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return str;
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}
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/* copy optionally and allow second arg to be null */
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char *
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string_copy(char *s1, char *s2)
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{
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if (!s1)
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return NULL;
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if (!s2)
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s1[0] = '\0';
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else
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strcpy(s1, s2);
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return s1;
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}
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/* convert an integer to a string, using a static buffer */
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char *
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itoa(int value)
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{
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static char buf[13];
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snprintf(buf, 12, "%d", value);
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return buf;
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}
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Boolean
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directory_exists(const char *dirname)
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{
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DIR *tptr;
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if (!dirname)
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return FALSE;
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if (!strlen(dirname))
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return FALSE;
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tptr = opendir(dirname);
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if (!tptr)
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return (FALSE);
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closedir(tptr);
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return (TRUE);
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}
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char *
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pathBaseName(const char *path)
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{
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char *pt;
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char *ret = (char *)path;
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pt = strrchr(path,(int)'/');
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if (pt != 0) /* if there is a slash */
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{
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ret = ++pt; /* start the file after it */
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}
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return(ret);
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}
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/* A free guaranteed to take NULL ptrs */
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void
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safe_free(void *ptr)
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{
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if (ptr)
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free(ptr);
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}
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/* A malloc that checks errors */
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void *
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safe_malloc(size_t size)
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{
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void *ptr;
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if (size <= 0)
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msgFatal("Invalid malloc size of %d!", size);
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ptr = malloc(size);
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if (!ptr)
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msgFatal("Out of memory!");
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bzero(ptr, size);
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return ptr;
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}
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/* A realloc that checks errors */
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void *
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safe_realloc(void *orig, size_t size)
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{
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void *ptr;
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if (size <= 0)
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msgFatal("Invalid realloc size of %d!", size);
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ptr = realloc(orig, size);
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if (!ptr)
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msgFatal("Out of memory!");
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return ptr;
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}
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/* Create a path biased from the VAR_INSTALL_ROOT variable (if not /) */
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char *
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root_bias(char *path)
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{
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static char tmp[FILENAME_MAX];
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char *cp = variable_get(VAR_INSTALL_ROOT);
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if (!strcmp(cp, "/"))
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return path;
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strcpy(tmp, variable_get(VAR_INSTALL_ROOT));
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strcat(tmp, path);
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return tmp;
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}
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/*
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* These next routines are kind of specialized just for building string lists
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* for dialog_menu().
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*/
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/* Add an item to an item list */
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dialogMenuItem *
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item_add(dialogMenuItem *list, char *prompt, char *title,
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int (*checked)(dialogMenuItem *self),
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int (*fire)(dialogMenuItem *self),
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void (*selected)(dialogMenuItem *self, int is_selected),
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void *data, int aux, int *curr, int *max)
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{
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dialogMenuItem *d;
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if (*curr == *max) {
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*max += 20;
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list = (dialogMenuItem *)realloc(list, sizeof(dialogMenuItem) * *max);
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}
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d = &list[(*curr)++];
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bzero(d, sizeof(*d));
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d->prompt = prompt ? strdup(prompt) : NULL;
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d->title = title ? strdup(title) : NULL;
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d->checked = checked;
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d->fire = fire;
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d->selected = selected;
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d->data = data;
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d->aux = aux;
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return list;
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}
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/* Toss the items out */
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void
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items_free(dialogMenuItem *list, int *curr, int *max)
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{
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int i;
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for (i = 0; list[i].prompt; i++) {
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safe_free(list[i].prompt);
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safe_free(list[i].title);
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}
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safe_free(list);
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*curr = *max = 0;
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}
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int
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Mkdir(char *ipath)
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{
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struct stat sb;
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int final;
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char *p, *path;
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if (file_readable(ipath) || Fake)
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return DITEM_SUCCESS;
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path = strcpy(alloca(strlen(ipath) + 1), ipath);
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if (isDebug())
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msgDebug("mkdir(%s)\n", path);
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p = path;
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if (p[0] == '/') /* Skip leading '/'. */
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++p;
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for (final = FALSE; !final; ++p) {
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if (p[0] == '\0' || (p[0] == '/' && p[1] == '\0'))
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final = TRUE;
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else if (p[0] != '/')
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continue;
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*p = '\0';
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if (stat(path, &sb)) {
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if (errno != ENOENT) {
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msgConfirm("Couldn't stat directory %s: %s", path, strerror(errno));
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return DITEM_FAILURE;
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}
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if (isDebug())
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msgDebug("mkdir(%s..)\n", path);
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if (mkdir(path, S_IRWXU | S_IRWXG | S_IRWXO) < 0) {
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msgConfirm("Couldn't create directory %s: %s", path,strerror(errno));
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return DITEM_FAILURE;
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}
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}
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*p = '/';
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}
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return DITEM_SUCCESS;
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}
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int
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Mount(char *mountp, void *dev)
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{
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struct ufs_args ufsargs;
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char device[80];
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char mountpoint[FILENAME_MAX];
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if (Fake)
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return DITEM_SUCCESS;
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if (*((char *)dev) != '/') {
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sprintf(device, "/mnt/dev/%s", (char *)dev);
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sprintf(mountpoint, "/mnt%s", mountp);
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}
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else {
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strcpy(device, dev);
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strcpy(mountpoint, mountp);
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}
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memset(&ufsargs,0,sizeof ufsargs);
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if (Mkdir(mountpoint)) {
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msgConfirm("Unable to make directory mountpoint for %s!", mountpoint);
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return DITEM_FAILURE;
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}
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if (isDebug())
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msgDebug("mount %s %s\n", device, mountpoint);
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ufsargs.fspec = device;
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if (mount(MOUNT_UFS, mountpoint, MNT_ASYNC, (caddr_t)&ufsargs) == -1) {
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msgConfirm("Error mounting %s on %s : %s", device, mountpoint, strerror(errno));
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return DITEM_FAILURE;
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}
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return DITEM_SUCCESS;
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}
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WINDOW *
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savescr(void)
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{
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WINDOW *w;
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w = dupwin(newscr);
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return w;
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}
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void
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restorescr(WINDOW *w)
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{
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touchwin(w);
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wrefresh(w);
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delwin(w);
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}
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