1 /*

     2  * BeOS platform-dependent support routines for PhysicsFS.

     3  *

     4  * Please see the file LICENSE.txt in the source's root directory.

     5  *

     6  *  This file written by Ryan C. Gordon.

     7  */

     8 

     9 #define __PHYSICSFS_INTERNAL__

    10 #include "physfs_platforms.h"

    11 

    12 #ifdef PHYSFS_PLATFORM_BEOS

    13 

    14 #ifdef PHYSFS_PLATFORM_HAIKU

    15 #include <os/kernel/OS.h>

    16 #include <os/app/Roster.h>

    17 #include <os/storage/Volume.h>

    18 #include <os/storage/VolumeRoster.h>

    19 #include <os/storage/Directory.h>

    20 #include <os/storage/Entry.h>

    21 #include <os/storage/Path.h>

    22 #include <os/kernel/fs_info.h>

    23 #include <os/device/scsi.h>

    24 #include <os/support/Locker.h>

    25 #else

    26 #include <be/kernel/OS.h>

    27 #include <be/app/Roster.h>

    28 #include <be/storage/Volume.h>

    29 #include <be/storage/VolumeRoster.h>

    30 #include <be/storage/Directory.h>

    31 #include <be/storage/Entry.h>

    32 #include <be/storage/Path.h>

    33 #include <be/kernel/fs_info.h>

    34 #include <be/device/scsi.h>

    35 #include <be/support/Locker.h>

    36 #endif

    37 

    38 #include <errno.h>

    39 #include <unistd.h>

    40 

    41 #include "physfs_internal.h"

    42 

    43 int __PHYSFS_platformInit(void)

    44 {

    45     return 1;  /* always succeed. */

    46 } /* __PHYSFS_platformInit */

    47 

    48 

    49 int __PHYSFS_platformDeinit(void)

    50 {

    51     return 1;  /* always succeed. */

    52 } /* __PHYSFS_platformDeinit */

    53 

    54 

    55 static char *getMountPoint(const char *devname, char *buf, size_t bufsize)

    56 {

    57     BVolumeRoster mounts;

    58     BVolume vol;

    59 

    60     mounts.Rewind();

    61     while (mounts.GetNextVolume(&vol) == B_NO_ERROR)

    62     {

    63         fs_info fsinfo;

    64         fs_stat_dev(vol.Device(), &fsinfo);

    65         if (strcmp(devname, fsinfo.device_name) == 0)

    66         {

    67             BDirectory directory;

    68             BEntry entry;

    69             BPath path;

    70             const char *str;

    71 

    72             if ( (vol.GetRootDirectory(&directory) < B_OK) ||

    73                  (directory.GetEntry(&entry) < B_OK) ||

    74                  (entry.GetPath(&path) < B_OK) ||

    75                  ( (str = path.Path()) == NULL) )

    76                 return NULL;

    77 

    78             strncpy(buf, str, bufsize-1);

    79             buf[bufsize-1] = '\0';

    80             return buf;

    81         } /* if */

    82     } /* while */

    83 

    84     return NULL;

    85 } /* getMountPoint */

    86 

    87 

    88     /*

    89      * This function is lifted from Simple Directmedia Layer (SDL):

    90      *  http://www.libsdl.org/  ... this is zlib-licensed code, too.

    91      */

    92 static void tryDir(const char *d, PHYSFS_StringCallback callback, void *data)

    93 {

    94     BDirectory dir;

    95     dir.SetTo(d);

    96     if (dir.InitCheck() != B_NO_ERROR)

    97         return;

    98 

    99     dir.Rewind();

   100     BEntry entry;

   101     while (dir.GetNextEntry(&entry) >= 0)

   102     {

   103         BPath path;

   104         const char *name;

   105         entry_ref e;

   106 

   107         if (entry.GetPath(&path) != B_NO_ERROR)

   108             continue;

   109 

   110         name = path.Path();

   111 

   112         if (entry.GetRef(&e) != B_NO_ERROR)

   113             continue;

   114 

   115         if (entry.IsDirectory())

   116         {

   117             if (strcmp(e.name, "floppy") != 0)

   118                 tryDir(name, callback, data);

   119             continue;

   120         } /* if */

   121 

   122         if (strcmp(e.name, "raw") != 0)  /* ignore partitions. */

   123             continue;

   124 

   125         const int devfd = open(name, O_RDONLY);

   126         if (devfd < 0)

   127             continue;

   128 

   129         device_geometry g;

   130         const int rc = ioctl(devfd, B_GET_GEOMETRY, &g, sizeof (g));

   131         close(devfd);

   132         if (rc < 0)

   133             continue;

   134 

   135         if (g.device_type != B_CD)

   136             continue;

   137 

   138         char mntpnt[B_FILE_NAME_LENGTH];

   139         if (getMountPoint(name, mntpnt, sizeof (mntpnt)))

   140             callback(data, mntpnt);

   141     } /* while */

   142 } /* tryDir */

   143 

   144 

   145 void __PHYSFS_platformDetectAvailableCDs(PHYSFS_StringCallback cb, void *data)

   146 {

   147     tryDir("/dev/disk", cb, data);

   148 } /* __PHYSFS_platformDetectAvailableCDs */

   149 

   150 

   151 static team_id getTeamID(void)

   152 {

   153     thread_info info;

   154     thread_id tid = find_thread(NULL);

   155     get_thread_info(tid, &info);

   156     return info.team;

   157 } /* getTeamID */

   158 

   159 

   160 char *__PHYSFS_platformCalcBaseDir(const char *argv0)

   161 {

   162     image_info info;

   163     int32 cookie = 0;

   164 

   165     while (get_next_image_info(0, &cookie, &info) == B_OK)

   166     {

   167         if (info.type == B_APP_IMAGE)

   168             break;

   169     } /* while */

   170 

   171     BEntry entry(info.name, true);

   172     BPath path;

   173     status_t rc = entry.GetPath(&path);  /* (path) now has binary's path. */

   174     assert(rc == B_OK);

   175     rc = path.GetParent(&path); /* chop filename, keep directory. */

   176     assert(rc == B_OK);

   177     const char *str = path.Path();

   178     assert(str != NULL);

   179     const size_t len = strlen(str);

   180     char *retval = (char *) allocator.Malloc(len + 2);

   181     BAIL_IF_MACRO(!retval, PHYSFS_ERR_OUT_OF_MEMORY, NULL);

   182     strcpy(retval, str);

   183     retval[len] = '/';

   184     retval[len+1] = '\0';

   185     return retval;

   186 } /* __PHYSFS_platformCalcBaseDir */

   187 

   188 

   189 char *__PHYSFS_platformCalcPrefDir(const char *org, const char *app)

   190 {

   191     const char *userdir = __PHYSFS_getUserDir();

   192     const char *append = "config/settings/";

   193     const size_t len = strlen(userdir) + strlen(append) + strlen(app) + 2;

   194     char *retval = allocator.Malloc(len);

   195     BAIL_IF_MACRO(!retval, PHYSFS_ERR_OUT_OF_MEMORY, NULL);

   196     snprintf(retval, len, "%s%s%s/", userdir, append, app);

   197     return retval;

   198 } /* __PHYSFS_platformCalcPrefDir */

   199 

   200 

   201 void *__PHYSFS_platformGetThreadID(void)

   202 {

   203     return (void *) find_thread(NULL);

   204 } /* __PHYSFS_platformGetThreadID */

   205 

   206 

   207 void *__PHYSFS_platformCreateMutex(void)

   208 {

   209     return new BLocker("PhysicsFS lock", true);

   210 } /* __PHYSFS_platformCreateMutex */

   211 

   212 

   213 void __PHYSFS_platformDestroyMutex(void *mutex)

   214 {

   215     delete ((BLocker *) mutex);

   216 } /* __PHYSFS_platformDestroyMutex */

   217 

   218 

   219 int __PHYSFS_platformGrabMutex(void *mutex)

   220 {

   221     return ((BLocker *) mutex)->Lock() ? 1 : 0;

   222 } /* __PHYSFS_platformGrabMutex */

   223 

   224 

   225 void __PHYSFS_platformReleaseMutex(void *mutex)

   226 {

   227     ((BLocker *) mutex)->Unlock();

   228 } /* __PHYSFS_platformReleaseMutex */

   229 

   230 

   231 int __PHYSFS_platformSetDefaultAllocator(PHYSFS_Allocator *a)

   232 {

   233     return 0;  /* just use malloc() and friends. */

   234 } /* __PHYSFS_platformSetDefaultAllocator */

   235 

   236 #endif  /* PHYSFS_PLATFORM_BEOS */

   237 

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

   239