diff options
Diffstat (limited to 'usr.sbin/pkg_install/lib/pen.c')
| -rw-r--r-- | usr.sbin/pkg_install/lib/pen.c | 186 |
1 files changed, 0 insertions, 186 deletions
diff --git a/usr.sbin/pkg_install/lib/pen.c b/usr.sbin/pkg_install/lib/pen.c deleted file mode 100644 index 2b405a3..0000000 --- a/usr.sbin/pkg_install/lib/pen.c +++ /dev/null @@ -1,186 +0,0 @@ -/* - * FreeBSD install - a package for the installation and maintainance - * of non-core utilities. - * - * 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. - * - * Jordan K. Hubbard - * 18 July 1993 - * - * Routines for managing the "play pen". - * - */ - -#include <sys/cdefs.h> -__FBSDID("$FreeBSD$"); - -#include "lib.h" -#include <err.h> -#include <libutil.h> -#include <libgen.h> -#include <sys/signal.h> -#include <sys/param.h> -#include <sys/mount.h> - -/* For keeping track of where we are */ -static char PenLocation[FILENAME_MAX]; - -char * -where_playpen(void) -{ - return PenLocation; -} - -/* Find a good place to play. */ -static char * -find_play_pen(char *pen, off_t sz) -{ - char *cp; - struct stat sb; - char humbuf[6]; - - if (pen[0] && isdir(dirname(pen)) == TRUE && (min_free(dirname(pen)) >= sz)) - return pen; - else if ((cp = getenv("PKG_TMPDIR")) != NULL && stat(cp, &sb) != FAIL && (min_free(cp) >= sz)) - sprintf(pen, "%s/instmp.XXXXXX", cp); - else if ((cp = getenv("TMPDIR")) != NULL && stat(cp, &sb) != FAIL && (min_free(cp) >= sz)) - sprintf(pen, "%s/instmp.XXXXXX", cp); - else if (stat("/var/tmp", &sb) != FAIL && min_free("/var/tmp") >= sz) - strcpy(pen, "/var/tmp/instmp.XXXXXX"); - else if (stat("/tmp", &sb) != FAIL && min_free("/tmp") >= sz) - strcpy(pen, "/tmp/instmp.XXXXXX"); - else if ((stat("/usr/tmp", &sb) == SUCCESS || mkdir("/usr/tmp", 01777) == SUCCESS) && min_free("/usr/tmp") >= sz) - strcpy(pen, "/usr/tmp/instmp.XXXXXX"); - else { - cleanup(0); - humanize_number(humbuf, sizeof humbuf, sz, "", HN_AUTOSCALE, - HN_NOSPACE); - errx(2, -"%s: can't find enough temporary space to extract the files, please set your\n" -"PKG_TMPDIR environment variable to a location with at least %s bytes\n" -"free", __func__, humbuf); - return NULL; - } - return pen; -} - -#define MAX_STACK 20 -static char *pstack[MAX_STACK]; -static int pdepth = -1; - -static const char * -pushPen(const char *pen) -{ - if (++pdepth == MAX_STACK) - errx(2, "%s: stack overflow.\n", __func__); - pstack[pdepth] = strdup(pen); - - return pstack[pdepth]; -} - -static void -popPen(char *pen) -{ - if (pdepth == -1) { - pen[0] = '\0'; - return; - } - strcpy(pen, pstack[pdepth]); - free(pstack[pdepth--]); -} - -/* - * Make a temporary directory to play in and chdir() to it, returning - * pathname of previous working directory. - */ -const char * -make_playpen(char *pen, off_t sz) -{ - char humbuf1[6], humbuf2[6]; - char cwd[FILENAME_MAX]; - - if (!find_play_pen(pen, sz)) - return NULL; - - if (!mkdtemp(pen)) { - cleanup(0); - errx(2, "%s: can't mktemp '%s'", __func__, pen); - } - - if (Verbose) { - if (sz) { - humanize_number(humbuf1, sizeof humbuf1, sz, "", HN_AUTOSCALE, - HN_NOSPACE); - humanize_number(humbuf2, sizeof humbuf2, min_free(pen), - "", HN_AUTOSCALE, HN_NOSPACE); - fprintf(stderr, "Requested space: %s bytes, free space: %s bytes in %s\n", humbuf1, humbuf2, pen); - } - } - - if (min_free(pen) < sz) { - rmdir(pen); - cleanup(0); - errx(2, "%s: not enough free space to create '%s'.\n" - "Please set your PKG_TMPDIR environment variable to a location\n" - "with more space and\ntry the command again", __func__, pen); - } - - if (!getcwd(cwd, FILENAME_MAX)) { - upchuck("getcwd"); - return NULL; - } - - if (chdir(pen) == FAIL) { - cleanup(0); - errx(2, "%s: can't chdir to '%s'", __func__, pen); - } - - strcpy(PenLocation, pen); - return pushPen(cwd); -} - -/* Convenience routine for getting out of playpen */ -int -leave_playpen() -{ - static char left[FILENAME_MAX]; - void (*oldsig)(int); - - if (!PenLocation[0]) - return 0; - - /* Don't interrupt while we're cleaning up */ - oldsig = signal(SIGINT, SIG_IGN); - strcpy(left, PenLocation); - popPen(PenLocation); - - if (chdir(PenLocation) == FAIL) { - cleanup(0); - errx(2, "%s: can't chdir back to '%s'", __func__, PenLocation); - } - - if (left[0] == '/' && vsystem("/bin/rm -rf %s", left)) - warnx("couldn't remove temporary dir '%s'", left); - signal(SIGINT, oldsig); - - return 1; -} - -off_t -min_free(const char *tmpdir) -{ - struct statfs buf; - - if (statfs(tmpdir, &buf) != 0) { - warn("statfs"); - return -1; - } - return (off_t)buf.f_bavail * (off_t)buf.f_bsize; -} |
