physfs_platform_qnx.c
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/*
* QNX support routines for PhysicsFS.
*
* Please see the file LICENSE.txt in the source's root directory.
*
* This file written by Ryan C. Gordon.
*/
/* This is tested against QNX 7 at the moment. */
#define __PHYSICSFS_INTERNAL__
#include "physfs_platforms.h"
#ifdef PHYSFS_PLATFORM_QNX
#include <fcntl.h>
#include <unistd.h>
#include <sys/types.h>
#include <limits.h>
#include "physfs_internal.h"
int __PHYSFS_platformInit(void)
{
return 1; /* always succeed. */
} /* __PHYSFS_platformInit */
void __PHYSFS_platformDeinit(void)
{
/* no-op */
} /* __PHYSFS_platformDeinit */
char *__PHYSFS_platformCalcBaseDir(const char *argv0)
{
char *retval = (char *) allocator.Malloc(PATH_MAX+1);
if (retval == NULL)
BAIL(PHYSFS_ERR_OUT_OF_MEMORY, NULL);
else
{
const int fd = open("/proc/self/exefile", O_RDONLY);
const ssize_t br = (fd == -1) ? -1 : read(fd, retval, PATH_MAX);
char *ptr;
if (fd != -1)
close(fd);
if ((br < 0) || (br > PATH_MAX))
{
allocator.Free(retval);
BAIL(PHYSFS_ERR_OS_ERROR, NULL);
} /* if */
retval[br] = '\0';
ptr = strrchr(retval, '/');
if (ptr == NULL) /* uhoh! */
{
allocator.Free(retval);
BAIL(PHYSFS_ERR_OS_ERROR, NULL);
} /* if */
ptr[1] = '\0'; /* chop off filename, leave dirs and '/' */
ptr = (char *) allocator.Realloc(retval, (ptr - retval) + 2);
if (ptr != NULL) /* just shrinking buffer; don't care if it failed. */
retval = ptr;
} /* else */
return retval;
} /* __PHYSFS_platformCalcBaseDir */
char *__PHYSFS_platformCalcPrefDir(const char *org, const char *app)
{
/* !!! FIXME: this might be wrong; I don't know if there's a better method
on QNX, or if it follows XDG specs, etc. */
char *retval = NULL;
const char *home = __PHYSFS_getUserDir();
if (home)
{
const size_t len = strlen(home) + strlen(app) + 3;
retval = (char *) allocator.Malloc(len);
BAIL_IF(!retval, PHYSFS_ERR_OUT_OF_MEMORY, NULL);
snprintf(retval, len, "%s.%s/", home, app);
} /* if */
return retval;
} /* __PHYSFS_platformCalcPrefDir */
#if !PHYSFS_NO_CDROM_SUPPORT
#include <devctl.h>
#include <sys/dcmd_blk.h>
#include <dirent.h>
#include <sys/stat.h>
#include <sys/statvfs.h>
static void checkPathForCD(const char *path, PHYSFS_StringCallback cb, void *d)
{
struct stat statbuf;
int fd;
/* The devctl() thing is QNX-specific. In this case, we query what is
probably the mountpoint for the device. statvfs() on that mountpoint
will tell use its filesystem type. */
if ( (stat(path, &statbuf) == 0) &&
(S_ISBLK(statbuf.st_mode)) &&
((fd = open(path, O_RDONLY | O_NONBLOCK)) != -1) )
{
char mnt[256] = { 0 };
const int rc = devctl(fd, DCMD_FSYS_MOUNTED_BY, mnt, sizeof (mnt), 0);
close(fd);
if ( (rc == EOK) && (mnt[0]) )
{
struct statvfs statvfsbuf;
if (statvfs(mnt, &statvfsbuf) == 0)
{
/* I don't know if this is a complete or accurate list. */
const char *fstype = statvfsbuf.f_basetype;
const int iscd = ( (strcmp(fstype, "cd") == 0) ||
(strcmp(fstype, "udf") == 0) );
if (iscd)
cb(d, mnt);
} /* if */
} /* if */
} /* if */
} /* checkPathForCD */
static void checkDevForCD(const char *dev, PHYSFS_StringCallback cb, void *d)
{
size_t len;
char *path;
if (dev[0] == '.') /* ignore "." and ".." */
{
if ((dev[1] == '\0') || ((dev[1] == '.') && (dev[2] == '\0')))
return;
} /* if */
len = strlen(dev) + 6;
path = (char *) __PHYSFS_smallAlloc(len);
if (!path)
return; /* oh well. */
snprintf(path, len, "/dev/%s", dev);
checkPathForCD(path, cb, d);
__PHYSFS_smallFree(path);
} /* checkDevForCD */
#endif /* !PHYSFS_NO_CDROM_SUPPORT */
void __PHYSFS_platformDetectAvailableCDs(PHYSFS_StringCallback cb, void *data)
{
#if !PHYSFS_NO_CDROM_SUPPORT
DIR *dirp = opendir("/dev");
if (dirp)
{
struct dirent *dent;
while ((dent = readdir(dirp)) != NULL)
checkDevForCD(dent->d_name, cb, data);
closedir(dirp);
} /* if */
#endif
} /* __PHYSFS_platformDetectAvailableCDs */
#endif /* PHYSFS_PLATFORM_QNX */
/* end of physfs_platform_qnx.c ... */