--- a/misc/libphysfs/platform_posix.c Wed May 16 18:22:28 2018 +0200
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,436 +0,0 @@
-/*
- * 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_NOT_FOUND;
- case ENOSPC: return PHYSFS_ERR_NO_SPACE;
- case ENOTDIR: return PHYSFS_ERR_NOT_FOUND;
- 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,
- PHYSFS_EnumFilesCallback callback,
- const char *origdir,
- void *callbackdata)
-{
- DIR *dir;
- struct dirent *ent;
- char *buf = NULL;
-
- 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;
- else if (strcmp(ent->d_name, "..") == 0)
- continue;
-
- 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);
- if ((fcntl(fd, F_GETFL) & O_ACCMODE) != O_RDONLY)
- 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, PHYSFS_Stat *st)
-{
- struct stat statbuf;
-
- BAIL_IF_MACRO(lstat(filename, &statbuf) == -1, errcodeFromErrno(), 0);
-
- 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 if(S_ISLNK(statbuf.st_mode))
- {
- st->filetype = PHYSFS_FILETYPE_SYMLINK;
- 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 ... */
-