config/pathsub.c
author Nick Alexander <nalexander@mozilla.com>
Wed, 19 Jul 2017 15:45:31 -0700
changeset 420463 23330f35f95778ef167c583ddd3e2c99e96198c2
parent 295344 7fedb2bf7fcb2db25ba3bcc27157f0fd5cc28025
child 447922 bb8056c405856f8ec9459956cd01428891a5b407
permissions -rw-r--r--
Bug 1255227 - Part 2: Bootstrap and upload android-sdk-linux.tar.xz. r=dustin,sebastian Before this patch, we used the Gradle sdk-manager-plugin to download and install Android SDKs and other dependencies. This plugin is now deprecated; the main dependency downloading functionality has been incorporated into the Android-Gradle build plugin. Unfortunately, it's been incorporated into newer versions that in turn require newer toolchains than we currently support, so we can't use the new functionality immediately. Rather than replace sdk-manager-plugin with equivalent Gradle-based functionality, this ticket uses recently added bootstrap functionality to bootstrap the Android SDK during the dependencies task. It then _uses_ that SDK to run the dependency fetching task, _produces_ an android-sdk-linux.tar.xz, and then _uploads_ the new artifact as a private artifact, ready to be pushed into tooltool. This avoids engineers building this critical part of the toolchain locally themselves, and will also feed into ongoing work to push toolchain artifacts into build jobs in Task Cluster. MozReview-Commit-ID: B6FC0ugaCef

/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
/*
** Pathname subroutines.
**
** Brendan Eich, 8/29/95
*/
#include <assert.h>
#include <sys/types.h>
#include <dirent.h>
#include <errno.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/stat.h>
#include "pathsub.h"

#ifdef USE_REENTRANT_LIBC
#include <libc_r.h>
#endif

#ifdef SUNOS4
#include "sunos4.h"
#endif

#ifndef D_INO
#define D_INO	d_ino
#endif

char *program;

void
fail(const char *format, ...)
{
    int error;
    va_list ap;

#ifdef USE_REENTRANT_LIBC
    R_STRERROR_INIT_R();
#endif

    error = errno;
    fprintf(stderr, "%s: ", program);
    va_start(ap, format);
    vfprintf(stderr, format, ap);
    va_end(ap);
    if (error) {

#ifdef USE_REENTRANT_LIBC
    R_STRERROR_R(errno);
	fprintf(stderr, ": %s", r_strerror_r);
#else
	fprintf(stderr, ": %s", strerror(errno));
#endif
    }

    putc('\n', stderr);
    exit(1);
}

char *
getcomponent(char *path, char *name)
{
    if (*path == '\0')
	return 0;
    if (*path == '/') {
	*name++ = '/';
    } else {
	do {
	    *name++ = *path++;
	} while (*path != '/' && *path != '\0');
    }
    *name = '\0';
    while (*path == '/')
	path++;
    return path;
}

#ifdef LAME_READDIR
#include <sys/param.h>
/*
** The static buffer in Unixware's readdir is too small.
*/
struct dirent *readdir(DIR *d)
{
        static struct dirent *buf = NULL;

        if(buf == NULL)
                buf = (struct dirent *) malloc(sizeof(struct dirent) + MAXPATHLEN);
        return(readdir_r(d, buf));
}
#endif

char *
ino2name(ino_t ino)
{
    DIR *dp;
    struct dirent *ep;
    char *name;

    dp = opendir("..");
    if (!dp)
	fail("cannot read parent directory");
    for (;;) {
	if (!(ep = readdir(dp)))
	    fail("cannot find current directory");
	if (ep->D_INO == ino)
	    break;
    }
    name = xstrdup(ep->d_name);
    closedir(dp);
    return name;
}

void *
xmalloc(size_t size)
{
    void *p = malloc(size);
    if (!p)
	fail("cannot allocate %u bytes", size);
    return p;
}

char *
xstrdup(char *s)
{
    return strcpy(xmalloc(strlen(s) + 1), s);
}

char *
xbasename(char *path)
{
    char *cp;

    while ((cp = strrchr(path, '/')) && cp[1] == '\0')
	*cp = '\0';
    if (!cp) return path;
    return cp + 1;
}

void
xchdir(const char *dir)
{
    if (chdir(dir) < 0)
	fail("cannot change directory to %s", dir);
}

int
relatepaths(char *from, char *to, char *outpath)
{
    char *cp, *cp2;
    int len;
    char buf[NAME_MAX];

    assert(*from == '/' && *to == '/');
    for (cp = to, cp2 = from; *cp == *cp2; cp++, cp2++)
	if (*cp == '\0')
	    break;
    while (cp[-1] != '/')
	cp--, cp2--;
    if (cp - 1 == to) {
	/* closest common ancestor is /, so use full pathname */
	len = strlen(strcpy(outpath, to));
	if (outpath[len] != '/') {
	    outpath[len++] = '/';
	    outpath[len] = '\0';
	}
    } else {
	len = 0;
	while ((cp2 = getcomponent(cp2, buf)) != 0) {
	    strcpy(outpath + len, "../");
	    len += 3;
	}
	while ((cp = getcomponent(cp, buf)) != 0) {
	    sprintf(outpath + len, "%s/", buf);
	    len += strlen(outpath + len);
	}
    }
    return len;
}

void
reversepath(char *inpath, char *name, int len, char *outpath)
{
    char *cp, *cp2;
    char buf[NAME_MAX];
    struct stat sb;

    cp = strcpy(outpath + PATH_MAX - (len + 1), name);
    cp2 = inpath;
    while ((cp2 = getcomponent(cp2, buf)) != 0) {
	if (strcmp(buf, ".") == 0)
	    continue;
	if (strcmp(buf, "..") == 0) {
	    if (stat(".", &sb) < 0)
		fail("cannot stat current directory");
	    name = ino2name(sb.st_ino);
	    len = strlen(name);
	    cp -= len + 1;
	    strcpy(cp, name);
	    cp[len] = '/';
	    free(name);
	    xchdir("..");
	} else {
	    cp -= 3;
	    strncpy(cp, "../", 3);
	    xchdir(buf);
	}
    }
    strcpy(outpath, cp);
}