src/platform_beos.cpp
author Ryan C. Gordon <icculus@icculus.org>
Sun, 11 Mar 2012 04:19:36 -0400
changeset 1213 050ee17c6e99
parent 1211 09280603503b
child 1223 0b8f11836561
permissions -rw-r--r--
Removed __PHYSFS_platformRealPath(). It was an ugly piece of code, didn't work on The Hurd (apparently), likely dangerous in its incomplete understanding of Windows paths, and only used in places that should have given us normalized, absolute paths in the first place anyhow.

/*
 * BeOS platform-dependent support routines for PhysicsFS.
 *
 * Please see the file LICENSE.txt in the source's root directory.
 *
 *  This file written by Ryan C. Gordon.
 */

#define __PHYSICSFS_INTERNAL__
#include "physfs_platforms.h"

#ifdef PHYSFS_PLATFORM_BEOS

#ifdef PHYSFS_PLATFORM_HAIKU
#include <os/kernel/OS.h>
#include <os/app/Roster.h>
#include <os/storage/Volume.h>
#include <os/storage/VolumeRoster.h>
#include <os/storage/Directory.h>
#include <os/storage/Entry.h>
#include <os/storage/Path.h>
#include <os/kernel/fs_info.h>
#include <os/device/scsi.h>
#include <os/support/Locker.h>
#else
#include <be/kernel/OS.h>
#include <be/app/Roster.h>
#include <be/storage/Volume.h>
#include <be/storage/VolumeRoster.h>
#include <be/storage/Directory.h>
#include <be/storage/Entry.h>
#include <be/storage/Path.h>
#include <be/kernel/fs_info.h>
#include <be/device/scsi.h>
#include <be/support/Locker.h>
#endif

#include <errno.h>
#include <unistd.h>

#include "physfs_internal.h"


int __PHYSFS_platformInit(void)
{
    return(1);  /* always succeed. */
} /* __PHYSFS_platformInit */


int __PHYSFS_platformDeinit(void)
{
    return(1);  /* always succeed. */
} /* __PHYSFS_platformDeinit */


static char *getMountPoint(const char *devname)
{
    BVolumeRoster mounts;
    BVolume vol;

    mounts.Rewind();
    while (mounts.GetNextVolume(&vol) == B_NO_ERROR)
    {
        fs_info fsinfo;
        fs_stat_dev(vol.Device(), &fsinfo);
        if (strcmp(devname, fsinfo.device_name) == 0)
        {
            //char buf[B_FILE_NAME_LENGTH];
            BDirectory directory;
            BEntry entry;
            BPath path;
            status_t rc;
            rc = vol.GetRootDirectory(&directory);
            BAIL_IF_MACRO(rc < B_OK, strerror(rc), NULL);
            rc = directory.GetEntry(&entry);
            BAIL_IF_MACRO(rc < B_OK, strerror(rc), NULL);
            rc = entry.GetPath(&path);
            BAIL_IF_MACRO(rc < B_OK, strerror(rc), NULL);
            const char *str = path.Path();
            BAIL_IF_MACRO(str == NULL, ERR_OS_ERROR, NULL);  /* ?! */
            char *retval = (char *) allocator.Malloc(strlen(str) + 1);
            BAIL_IF_MACRO(retval == NULL, ERR_OUT_OF_MEMORY, NULL);
            strcpy(retval, str);
            return(retval);
        } /* if */
    } /* while */

    return(NULL);
} /* getMountPoint */


    /*
     * This function is lifted from Simple Directmedia Layer (SDL):
     *  http://www.libsdl.org/
     */
static void tryDir(const char *d, PHYSFS_StringCallback callback, void *data)
{
    BDirectory dir;
    dir.SetTo(d);
    if (dir.InitCheck() != B_NO_ERROR)
        return;

    dir.Rewind();
    BEntry entry;
    while (dir.GetNextEntry(&entry) >= 0)
    {
        BPath path;
        const char *name;
        entry_ref e;

        if (entry.GetPath(&path) != B_NO_ERROR)
            continue;

        name = path.Path();

        if (entry.GetRef(&e) != B_NO_ERROR)
            continue;

        if (entry.IsDirectory())
        {
            if (strcmp(e.name, "floppy") != 0)
                tryDir(name, callback, data);
        } /* if */

        else
        {
            bool add_it = false;
            device_geometry g;

            if (strcmp(e.name, "raw") == 0)  /* ignore partitions. */
            {
                const int devfd = open(name, O_RDONLY);
                if (devfd >= 0)
                {
                    const int rc = ioctl(devfd, B_GET_GEOMETRY, &g, sizeof(g));
                    close(devfd);
                    if (rc >= 0)
                    {
                        if (g.device_type == B_CD)
                        {
                            char *mntpnt = getMountPoint(name);
                            if (mntpnt != NULL)
                            {
                                callback(data, mntpnt);
                                allocator.Free(mntpnt);  /* !!! FIXME: lose this malloc! */
                            } /* if */
                        } /* if */
                    } /* if */
                } /* if */
            } /* if */
        } /* else */
    } /* while */
} /* tryDir */


void __PHYSFS_platformDetectAvailableCDs(PHYSFS_StringCallback cb, void *data)
{
    tryDir("/dev/disk", cb, data);
} /* __PHYSFS_platformDetectAvailableCDs */


static team_id getTeamID(void)
{
    thread_info info;
    thread_id tid = find_thread(NULL);
    get_thread_info(tid, &info);
    return(info.team);
} /* getTeamID */


char *__PHYSFS_platformCalcBaseDir(const char *argv0)
{
    image_info info;
    int32 cookie = 0;

    while (get_next_image_info(0, &cookie, &info) == B_OK)
    {
        if (info.type == B_APP_IMAGE)
            break;
    } /* while */

    BEntry entry(info.name, true);
    BPath path;
    status_t rc = entry.GetPath(&path);  /* (path) now has binary's path. */
    assert(rc == B_OK);
    rc = path.GetParent(&path); /* chop filename, keep directory. */
    assert(rc == B_OK);
    const char *str = path.Path();
    assert(str != NULL);
    char *retval = (char *) allocator.Malloc(strlen(str) + 1);
    BAIL_IF_MACRO(retval == NULL, ERR_OUT_OF_MEMORY, NULL);
    strcpy(retval, str);
    return(retval);
} /* __PHYSFS_platformCalcBaseDir */


void *__PHYSFS_platformGetThreadID(void)
{
    return((void *) find_thread(NULL));
} /* __PHYSFS_platformGetThreadID */


void *__PHYSFS_platformCreateMutex(void)
{
    return(new BLocker("PhysicsFS lock", true));
} /* __PHYSFS_platformCreateMutex */


void __PHYSFS_platformDestroyMutex(void *mutex)
{
    delete ((BLocker *) mutex);
} /* __PHYSFS_platformDestroyMutex */


int __PHYSFS_platformGrabMutex(void *mutex)
{
    return ((BLocker *) mutex)->Lock() ? 1 : 0;
} /* __PHYSFS_platformGrabMutex */


void __PHYSFS_platformReleaseMutex(void *mutex)
{
    ((BLocker *) mutex)->Unlock();
} /* __PHYSFS_platformReleaseMutex */


int __PHYSFS_platformSetDefaultAllocator(PHYSFS_Allocator *a)
{
    return(0);  /* just use malloc() and friends. */
} /* __PHYSFS_platformSetDefaultAllocator */

#endif  /* PHYSFS_PLATFORM_BEOS */

/* end of beos.cpp ... */