diff -r d1ea9b3f543e -r 13e2037ebc79 misc/physfs/src/platform_posix.c
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/misc/physfs/src/platform_posix.c	Sat Oct 20 00:20:39 2012 +0400
@@ -0,0 +1,479 @@
+/*
+ * Posix-esque support routines for PhysicsFS.
+ *
+ * Please see the file LICENSE.txt in the source's root directory.
+ *
+ *  This file written by Ryan C. Gordon.
+ */
+
+/* !!! FIXME: check for EINTR? */
+
+#define __PHYSICSFS_INTERNAL__
+#include "physfs_platforms.h"
+
+#ifdef PHYSFS_PLATFORM_POSIX
+
+#include <unistd.h>
+#include <ctype.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <pwd.h>
+#include <dirent.h>
+#include <errno.h>
+#include <fcntl.h>
+
+#if ((!defined PHYSFS_NO_THREAD_SUPPORT) && (!defined PHYSFS_PLATFORM_BEOS))
+#include <pthread.h>
+#endif
+
+#include "physfs_internal.h"
+
+
+static PHYSFS_ErrorCode errcodeFromErrnoError(const int err)
+{
+    switch (err)
+    {
+        case 0: return PHYSFS_ERR_OK;
+        case EACCES: return PHYSFS_ERR_PERMISSION;
+        case EPERM: return PHYSFS_ERR_PERMISSION;
+        case EDQUOT: return PHYSFS_ERR_NO_SPACE;
+        case EIO: return PHYSFS_ERR_IO;
+        case ELOOP: return PHYSFS_ERR_SYMLINK_LOOP;
+        case EMLINK: return PHYSFS_ERR_NO_SPACE;
+        case ENAMETOOLONG: return PHYSFS_ERR_BAD_FILENAME;
+        case ENOENT: return PHYSFS_ERR_NO_SUCH_PATH;
+        case ENOSPC: return PHYSFS_ERR_NO_SPACE;
+        case ENOTDIR: return PHYSFS_ERR_NO_SUCH_PATH;
+        case EISDIR: return PHYSFS_ERR_NOT_A_FILE;
+        case EROFS: return PHYSFS_ERR_READ_ONLY;
+        case ETXTBSY: return PHYSFS_ERR_BUSY;
+        case EBUSY: return PHYSFS_ERR_BUSY;
+        case ENOMEM: return PHYSFS_ERR_OUT_OF_MEMORY;
+        case ENOTEMPTY: return PHYSFS_ERR_DIR_NOT_EMPTY;
+        default: return PHYSFS_ERR_OS_ERROR;
+    } /* switch */
+} /* errcodeFromErrnoError */
+
+
+static inline PHYSFS_ErrorCode errcodeFromErrno(void)
+{
+    return errcodeFromErrnoError(errno);
+} /* errcodeFromErrno */
+
+
+static char *getUserDirByUID(void)
+{
+    uid_t uid = getuid();
+    struct passwd *pw;
+    char *retval = NULL;
+
+    pw = getpwuid(uid);
+    if ((pw != NULL) && (pw->pw_dir != NULL) && (*pw->pw_dir != '\0'))
+    {
+        const size_t dlen = strlen(pw->pw_dir);
+        const size_t add_dirsep = (pw->pw_dir[dlen-1] != '/') ? 1 : 0;
+        retval = (char *) allocator.Malloc(dlen + 1 + add_dirsep);
+        if (retval != NULL)
+        {
+            strcpy(retval, pw->pw_dir);
+            if (add_dirsep)
+            {
+                retval[dlen] = '/';
+                retval[dlen+1] = '\0';
+            } /* if */
+        } /* if */
+    } /* if */
+    
+    return retval;
+} /* getUserDirByUID */
+
+
+char *__PHYSFS_platformCalcUserDir(void)
+{
+    char *retval = NULL;
+    char *envr = getenv("HOME");
+
+    /* if the environment variable was set, make sure it's really a dir. */
+    if (envr != NULL)
+    {
+        struct stat statbuf;
+        if ((stat(envr, &statbuf) != -1) && (S_ISDIR(statbuf.st_mode)))
+        {
+            const size_t envrlen = strlen(envr);
+            const size_t add_dirsep = (envr[envrlen-1] != '/') ? 1 : 0;
+            retval = allocator.Malloc(envrlen + 1 + add_dirsep);
+            if (retval)
+            {
+                strcpy(retval, envr);
+                if (add_dirsep)
+                {
+                    retval[envrlen] = '/';
+                    retval[envrlen+1] = '\0';
+                } /* if */
+            } /* if */
+        } /* if */
+    } /* if */
+
+    if (retval == NULL)
+        retval = getUserDirByUID();
+
+    return retval;
+} /* __PHYSFS_platformCalcUserDir */
+
+
+void __PHYSFS_platformEnumerateFiles(const char *dirname,
+                                     int omitSymLinks,
+                                     PHYSFS_EnumFilesCallback callback,
+                                     const char *origdir,
+                                     void *callbackdata)
+{
+    DIR *dir;
+    struct dirent *ent;
+    int bufsize = 0;
+    char *buf = NULL;
+    int dlen = 0;
+
+    if (omitSymLinks)  /* !!! FIXME: this malloc sucks. */
+    {
+        dlen = strlen(dirname);
+        bufsize = dlen + 256;
+        buf = (char *) allocator.Malloc(bufsize);
+        if (buf == NULL)
+            return;
+        strcpy(buf, dirname);
+        if (buf[dlen - 1] != '/')
+        {
+            buf[dlen++] = '/';
+            buf[dlen] = '\0';
+        } /* if */
+    } /* if */
+
+    errno = 0;
+    dir = opendir(dirname);
+    if (dir == NULL)
+    {
+        allocator.Free(buf);
+        return;
+    } /* if */
+
+    while ((ent = readdir(dir)) != NULL)
+    {
+        if (strcmp(ent->d_name, ".") == 0)
+            continue;
+
+        if (strcmp(ent->d_name, "..") == 0)
+            continue;
+
+        if (omitSymLinks)
+        {
+            PHYSFS_Stat statbuf;
+            int exists = 0;
+            char *p;
+            int len = strlen(ent->d_name) + dlen + 1;
+            if (len > bufsize)
+            {
+                p = (char *) allocator.Realloc(buf, len);
+                if (p == NULL)
+                    continue;
+                buf = p;
+                bufsize = len;
+            } /* if */
+
+            strcpy(buf + dlen, ent->d_name);
+
+            if (!__PHYSFS_platformStat(buf, &exists, &statbuf))
+                continue;
+            else if (!exists)
+                continue;  /* probably can't happen, but just in case. */
+            else if (statbuf.filetype == PHYSFS_FILETYPE_SYMLINK)
+                continue;
+        } /* if */
+
+        callback(callbackdata, origdir, ent->d_name);
+    } /* while */
+
+    allocator.Free(buf);
+    closedir(dir);
+} /* __PHYSFS_platformEnumerateFiles */
+
+
+int __PHYSFS_platformMkDir(const char *path)
+{
+    const int rc = mkdir(path, S_IRWXU);
+    BAIL_IF_MACRO(rc == -1, errcodeFromErrno(), 0);
+    return 1;
+} /* __PHYSFS_platformMkDir */
+
+
+static void *doOpen(const char *filename, int mode)
+{
+    const int appending = (mode & O_APPEND);
+    int fd;
+    int *retval;
+    errno = 0;
+
+    /* O_APPEND doesn't actually behave as we'd like. */
+    mode &= ~O_APPEND;
+
+    fd = open(filename, mode, S_IRUSR | S_IWUSR);
+    BAIL_IF_MACRO(fd < 0, errcodeFromErrno(), NULL);
+
+    if (appending)
+    {
+        if (lseek(fd, 0, SEEK_END) < 0)
+        {
+            const int err = errno;
+            close(fd);
+            BAIL_MACRO(errcodeFromErrnoError(err), NULL);
+        } /* if */
+    } /* if */
+
+    retval = (int *) allocator.Malloc(sizeof (int));
+    if (!retval)
+    {
+        close(fd);
+        BAIL_MACRO(PHYSFS_ERR_OUT_OF_MEMORY, NULL);
+    } /* if */
+
+    *retval = fd;
+    return ((void *) retval);
+} /* doOpen */
+
+
+void *__PHYSFS_platformOpenRead(const char *filename)
+{
+    return doOpen(filename, O_RDONLY);
+} /* __PHYSFS_platformOpenRead */
+
+
+void *__PHYSFS_platformOpenWrite(const char *filename)
+{
+    return doOpen(filename, O_WRONLY | O_CREAT | O_TRUNC);
+} /* __PHYSFS_platformOpenWrite */
+
+
+void *__PHYSFS_platformOpenAppend(const char *filename)
+{
+    return doOpen(filename, O_WRONLY | O_CREAT | O_APPEND);
+} /* __PHYSFS_platformOpenAppend */
+
+
+PHYSFS_sint64 __PHYSFS_platformRead(void *opaque, void *buffer,
+                                    PHYSFS_uint64 len)
+{
+    const int fd = *((int *) opaque);
+    ssize_t rc = 0;
+
+    if (!__PHYSFS_ui64FitsAddressSpace(len))
+        BAIL_MACRO(PHYSFS_ERR_INVALID_ARGUMENT, -1);
+
+    rc = read(fd, buffer, (size_t) len);
+    BAIL_IF_MACRO(rc == -1, errcodeFromErrno(), -1);
+    assert(rc >= 0);
+    assert(rc <= len);
+    return (PHYSFS_sint64) rc;
+} /* __PHYSFS_platformRead */
+
+
+PHYSFS_sint64 __PHYSFS_platformWrite(void *opaque, const void *buffer,
+                                     PHYSFS_uint64 len)
+{
+    const int fd = *((int *) opaque);
+    ssize_t rc = 0;
+
+    if (!__PHYSFS_ui64FitsAddressSpace(len))
+        BAIL_MACRO(PHYSFS_ERR_INVALID_ARGUMENT, -1);
+
+    rc = write(fd, (void *) buffer, (size_t) len);
+    BAIL_IF_MACRO(rc == -1, errcodeFromErrno(), rc);
+    assert(rc >= 0);
+    assert(rc <= len);
+    return (PHYSFS_sint64) rc;
+} /* __PHYSFS_platformWrite */
+
+
+int __PHYSFS_platformSeek(void *opaque, PHYSFS_uint64 pos)
+{
+    const int fd = *((int *) opaque);
+    const int rc = lseek(fd, (off_t) pos, SEEK_SET);
+    BAIL_IF_MACRO(rc == -1, errcodeFromErrno(), 0);
+    return 1;
+} /* __PHYSFS_platformSeek */
+
+
+PHYSFS_sint64 __PHYSFS_platformTell(void *opaque)
+{
+    const int fd = *((int *) opaque);
+    PHYSFS_sint64 retval;
+    retval = (PHYSFS_sint64) lseek(fd, 0, SEEK_CUR);
+    BAIL_IF_MACRO(retval == -1, errcodeFromErrno(), -1);
+    return retval;
+} /* __PHYSFS_platformTell */
+
+
+PHYSFS_sint64 __PHYSFS_platformFileLength(void *opaque)
+{
+    const int fd = *((int *) opaque);
+    struct stat statbuf;
+    BAIL_IF_MACRO(fstat(fd, &statbuf) == -1, errcodeFromErrno(), -1);
+    return ((PHYSFS_sint64) statbuf.st_size);
+} /* __PHYSFS_platformFileLength */
+
+
+int __PHYSFS_platformFlush(void *opaque)
+{
+    const int fd = *((int *) opaque);
+    BAIL_IF_MACRO(fsync(fd) == -1, errcodeFromErrno(), 0);
+    return 1;
+} /* __PHYSFS_platformFlush */
+
+
+void __PHYSFS_platformClose(void *opaque)
+{
+    const int fd = *((int *) opaque);
+    (void) close(fd);  /* we don't check this. You should have used flush! */
+    allocator.Free(opaque);
+} /* __PHYSFS_platformClose */
+
+
+int __PHYSFS_platformDelete(const char *path)
+{
+    BAIL_IF_MACRO(remove(path) == -1, errcodeFromErrno(), 0);
+    return 1;
+} /* __PHYSFS_platformDelete */
+
+
+int __PHYSFS_platformStat(const char *filename, int *exists, PHYSFS_Stat *st)
+{
+    struct stat statbuf;
+
+    if (lstat(filename, &statbuf) == -1)
+    {
+        *exists = (errno != ENOENT);
+        BAIL_MACRO(errcodeFromErrno(), 0);
+    } /* if */
+
+    *exists = 1;
+
+    if (S_ISREG(statbuf.st_mode))
+    {
+        st->filetype = PHYSFS_FILETYPE_REGULAR;
+        st->filesize = statbuf.st_size;
+    } /* if */
+
+    else if(S_ISDIR(statbuf.st_mode))
+    {
+        st->filetype = PHYSFS_FILETYPE_DIRECTORY;
+        st->filesize = 0;
+    } /* else if */
+
+    else
+    {
+        st->filetype = PHYSFS_FILETYPE_OTHER;
+        st->filesize = statbuf.st_size;
+    } /* else */
+
+    st->modtime = statbuf.st_mtime;
+    st->createtime = statbuf.st_ctime;
+    st->accesstime = statbuf.st_atime;
+
+    /* !!! FIXME: maybe we should just report full permissions? */
+    st->readonly = access(filename, W_OK);
+    return 1;
+} /* __PHYSFS_platformStat */
+
+
+#ifndef PHYSFS_PLATFORM_BEOS  /* BeOS has its own code in platform_beos.cpp */
+#if (defined PHYSFS_NO_THREAD_SUPPORT)
+
+void *__PHYSFS_platformGetThreadID(void) { return ((void *) 0x0001); }
+void *__PHYSFS_platformCreateMutex(void) { return ((void *) 0x0001); }
+void __PHYSFS_platformDestroyMutex(void *mutex) {}
+int __PHYSFS_platformGrabMutex(void *mutex) { return 1; }
+void __PHYSFS_platformReleaseMutex(void *mutex) {}
+
+#else
+
+typedef struct
+{
+    pthread_mutex_t mutex;
+    pthread_t owner;
+    PHYSFS_uint32 count;
+} PthreadMutex;
+
+
+void *__PHYSFS_platformGetThreadID(void)
+{
+    return ( (void *) ((size_t) pthread_self()) );
+} /* __PHYSFS_platformGetThreadID */
+
+
+void *__PHYSFS_platformCreateMutex(void)
+{
+    int rc;
+    PthreadMutex *m = (PthreadMutex *) allocator.Malloc(sizeof (PthreadMutex));
+    BAIL_IF_MACRO(!m, PHYSFS_ERR_OUT_OF_MEMORY, NULL);
+    rc = pthread_mutex_init(&m->mutex, NULL);
+    if (rc != 0)
+    {
+        allocator.Free(m);
+        BAIL_MACRO(PHYSFS_ERR_OS_ERROR, NULL);
+    } /* if */
+
+    m->count = 0;
+    m->owner = (pthread_t) 0xDEADBEEF;
+    return ((void *) m);
+} /* __PHYSFS_platformCreateMutex */
+
+
+void __PHYSFS_platformDestroyMutex(void *mutex)
+{
+    PthreadMutex *m = (PthreadMutex *) mutex;
+
+    /* Destroying a locked mutex is a bug, but we'll try to be helpful. */
+    if ((m->owner == pthread_self()) && (m->count > 0))
+        pthread_mutex_unlock(&m->mutex);
+
+    pthread_mutex_destroy(&m->mutex);
+    allocator.Free(m);
+} /* __PHYSFS_platformDestroyMutex */
+
+
+int __PHYSFS_platformGrabMutex(void *mutex)
+{
+    PthreadMutex *m = (PthreadMutex *) mutex;
+    pthread_t tid = pthread_self();
+    if (m->owner != tid)
+    {
+        if (pthread_mutex_lock(&m->mutex) != 0)
+            return 0;
+        m->owner = tid;
+    } /* if */
+
+    m->count++;
+    return 1;
+} /* __PHYSFS_platformGrabMutex */
+
+
+void __PHYSFS_platformReleaseMutex(void *mutex)
+{
+    PthreadMutex *m = (PthreadMutex *) mutex;
+    assert(m->owner == pthread_self());  /* catch programming errors. */
+    assert(m->count > 0);  /* catch programming errors. */
+    if (m->owner == pthread_self())
+    {
+        if (--m->count == 0)
+        {
+            m->owner = (pthread_t) 0xDEADBEEF;
+            pthread_mutex_unlock(&m->mutex);
+        } /* if */
+    } /* if */
+} /* __PHYSFS_platformReleaseMutex */
+
+#endif /* !PHYSFS_NO_THREAD_SUPPORT */
+#endif /* !PHYSFS_PLATFORM_BEOS */
+
+#endif  /* PHYSFS_PLATFORM_POSIX */
+
+/* end of posix.c ... */
+