Haiku: Add native library IO support

src/native/libs/Common/pal_config.h.in

@@ -32,6 +32,7 @@
 #cmakedefine01 HAVE_MNTINFO
 #cmakedefine01 HAVE_STATFS_FSTYPENAME
 #cmakedefine01 HAVE_STATVFS_FSTYPENAME
+#cmakedefine01 HAVE_STATVFS_BASETYPE
 #cmakedefine01 HAVE_NON_LEGACY_STATFS
 #cmakedefine01 HAVE_STRCPY_S
 #cmakedefine01 HAVE_STRLCPY
@@ -88,6 +89,7 @@
 #cmakedefine01 HAVE_NETPACKET_PACKET_H
 #cmakedefine01 HAVE_NET_IF_ARP_H
 #cmakedefine01 HAVE_SYS_MNTENT_H
+#cmakedefine01 HAVE_MNTENT_H
 #cmakedefine01 HAVE_NET_IFMEDIA_H
 #cmakedefine01 HAVE_IOS_NET_IFMEDIA_H
 #cmakedefine01 HAVE_LINUX_RTNETLINK_H
@@ -128,6 +130,7 @@
 #cmakedefine01 HAVE_TERMIOS_H
 #cmakedefine01 HAVE_DLFCN_H
 #cmakedefine01 HAVE_PTHREAD_H
+#cmakedefine01 HAVE_SYS_STATFS_H
 #cmakedefine01 HAVE_SYS_STATVFS_H
 #cmakedefine01 HAVE_NET_IF_H
 #cmakedefine01 HAVE_SYS_PROCINFO_H
@@ -141,6 +144,8 @@
 #cmakedefine01 HAVE_MAKEDEV_SYSMACROSH
 #cmakedefine01 HAVE_GETGRGID_R
 #cmakedefine01 HAVE_TERMIOS2
+#cmakedefine01 HAVE_DIRENT_NAME_SIZE
+#cmakedefine01 DIRENT_NAME_SIZE
 
 #ifndef HOST_WASI
 #cmakedefine01 HAVE_GETRUSAGE

src/native/libs/System.Native/pal_io.c

@@ -46,7 +46,7 @@
 #include <sys/vfs.h>
 #elif HAVE_STATFS_MOUNT // BSD
 #include <sys/mount.h>
-#elif HAVE_SYS_STATVFS_H && !HAVE_NON_LEGACY_STATFS // SunOS
+#elif HAVE_SYS_STATVFS_H && !HAVE_NON_LEGACY_STATFS && HAVE_STATVFS_BASETYPE // SunOS
 #include <sys/types.h>
 #include <sys/statvfs.h>
 #if HAVE_STATFS_VFS
@@ -58,6 +58,10 @@
 #include <sys/param.h>
 #endif
 
+#ifdef TARGET_HAIKU
+#include <fs_info.h>
+#endif // TARGET_HAIKU
+
 #ifdef _AIX
 #include <alloca.h>
 // Somehow, AIX mangles the definition for this behind a C++ def
@@ -399,7 +403,7 @@ int32_t SystemNative_IsMemfdSupported(void)
     }
 #endif
 
-    // Note that the name has no affect on file descriptor behavior. From linux manpage: 
+    // Note that the name has no affect on file descriptor behavior. From linux manpage:
     //   Names do not affect the behavior of the file descriptor, and as such multiple files can have the same name without any side effects.
     int32_t fd = (int32_t)syscall(__NR_memfd_create, "test", MFD_CLOEXEC | MFD_ALLOW_SEALING);
     if (fd < 0) return 0;
@@ -515,8 +519,13 @@ int32_t SystemNative_GetReadDirRBufferSize(void)
 #endif
     // dirent should be under 2k in size
     assert(result < 2048);
+#if HAVE_DIRENT_NAME_SIZE
     // add some extra space so we can align the buffer to dirent.
     return (int32_t)(result + dirent_alignment - 1);
+#else
+    // add some extra space for the name.
+    return sizeof(struct dirent) + NAME_MAX + dirent_alignment - 1;
+#endif // HAVE_DIRENT_NAME_SIZE
 #else
     return 0;
 #endif
@@ -882,8 +891,14 @@ void SystemNative_GetDeviceIdentifiers(uint64_t dev, uint32_t* majorNumber, uint
 {
 #if !defined(TARGET_WASI)
     dev_t castedDev = (dev_t)dev;
+#if !defined(TARGET_HAIKU)
     *majorNumber = (uint32_t)major(castedDev);
     *minorNumber = (uint32_t)minor(castedDev);
+#else
+    // Haiku has no concept of major/minor numbers, but it does have device IDs.
+    *majorNumber = 0;
+    *minorNumber = (uint32_t)dev;
+#endif // TARGET_HAIKU
 #else /* TARGET_WASI */
     dev_t castedDev = (dev_t)dev;
     *majorNumber = 0;
@@ -894,7 +909,12 @@ void SystemNative_GetDeviceIdentifiers(uint64_t dev, uint32_t* majorNumber, uint
 int32_t SystemNative_MkNod(const char* pathName, uint32_t mode, uint32_t major, uint32_t minor)
 {
 #if !defined(TARGET_WASI)
+#if !defined(TARGET_HAIKU)
     dev_t dev = (dev_t)makedev(major, minor);
+#else
+    (void)major;
+    dev_t dev = (dev_t)minor;
+#endif // !TARGET_HAIKU
 
     int32_t result;
     while ((result = mknod(pathName, (mode_t)mode, dev)) < 0 && errno == EINTR);
@@ -1641,7 +1661,7 @@ static int16_t ConvertLockType(int16_t managedLockType)
     }
 }
 
-#if !HAVE_NON_LEGACY_STATFS || defined(TARGET_APPLE) || defined(TARGET_FREEBSD)
+#if !HAVE_NON_LEGACY_STATFS || defined(TARGET_APPLE) || defined(TARGET_FREEBSD) || defined(TARGET_HAIKU)
 static uint32_t MapFileSystemNameToEnum(const char* fileSystemName)
 {
     uint32_t result = 0;
@@ -1800,9 +1820,29 @@ uint32_t SystemNative_GetFileSystemType(intptr_t fd)
     uint32_t result = (uint32_t)statfsArgs.f_type;
     return result;
 #endif
+#elif defined(TARGET_HAIKU)
+    struct stat st;
+    int fstatRes;
+    while ((fstatRes = fstat(ToFileDescriptor(fd), &st)) == -1 && errno == EINTR);
+    if (fstatRes == -1) return 0;
+
+    struct fs_info info;
+    int fsStatDevRes;
+    while ((fsStatDevRes = fs_stat_dev(st.st_dev, &info)) == -1 && errno == EINTR);
+    if (fsStatDevRes == -1) return 0;
+
+    if (strcmp(info.fsh_name, "bfs") == 0)
+    {
+        // Haiku names its own BFS filesystem "bfs", but on Linux and some other UNIXes
+        // it is called "befs" to avoid confusion with Boot File System.
+        strncpy(info.fsh_name, "befs", sizeof(info.fsh_name) - 1);
+        info.fsh_name[sizeof(info.fsh_name) - 1] = '\0';
+    }
+
+    return MapFileSystemNameToEnum(info.fsh_name);
 #elif defined(TARGET_WASI)
     return EINTR;
-#elif !HAVE_NON_LEGACY_STATFS
+#elif !HAVE_NON_LEGACY_STATFS && HAVE_STATVFS_BASETYPE
     int statfsRes;
     struct statvfs statfsArgs;
     while ((statfsRes = fstatvfs(ToFileDescriptor(fd), &statfsArgs)) == -1 && errno == EINTR) ;
@@ -1976,7 +2016,7 @@ static int GetAllowedVectorCount(IOVector* vectors, int32_t vectorCount)
     // For macOS preadv and pwritev can fail with EINVAL when the total length
     // of all vectors overflows a 32-bit integer.
     size_t totalLength = 0;
-    for (int i = 0; i < allowedCount; i++) 
+    for (int i = 0; i < allowedCount; i++)
     {
         assert(INT_MAX >= vectors[i].Count);
 

src/native/libs/System.Native/pal_mount.c

@@ -13,16 +13,24 @@
 #if HAVE_MNTINFO
 #include <sys/mount.h>
 #else
+#if HAVE_SYS_STATFS_H
 #include <sys/statfs.h>
+#endif
 #if HAVE_SYS_MNTENT_H
 #include <sys/mntent.h>
 #include <sys/mnttab.h>
-#include <sys/statvfs.h>
-#else
+#elif HAVE_MNTENT_H
 #include <mntent.h>
 #endif
+#include <sys/statvfs.h>
 #define STRING_BUFFER_SIZE 8192
 
+#ifdef __HAIKU__
+#include <dirent.h>
+#include <fs_info.h>
+#include <fs_query.h>
+#endif // __HAIKU__
+
 // Android does not define MNTOPT_RO
 #ifndef MNTOPT_RO
 #define MNTOPT_RO "r"
@@ -68,7 +76,7 @@ int32_t SystemNative_GetAllMountPoints(MountPointFound onFound, void* context)
     return result;
 }
 
-#else
+#elif HAVE_MNTENT_H
     int result = -1;
     FILE* fp = setmntent("/proc/mounts", MNTOPT_RO);
     if (fp != NULL)
@@ -91,6 +99,38 @@ int32_t SystemNative_GetAllMountPoints(MountPointFound onFound, void* context)
     return result;
 }
 
+#elif defined(__HAIKU__)
+    int32 cookie = 0;
+    dev_t currentDev;
+
+    while ((long)(currentDev = next_dev(&cookie)) >= 0)
+    {
+        struct fs_info info;
+        if (fs_stat_dev(currentDev, &info) != B_OK)
+        {
+            continue;
+        }
+
+        char name[STRING_BUFFER_SIZE];
+        // Two bytes for the name as we're storing "."
+        char buf[sizeof(struct dirent) + 2];
+        struct dirent *entry = (struct dirent *)&buf;
+        strncpy(entry->d_name, ".", 2);
+        entry->d_pdev = currentDev;
+        entry->d_pino = info.root;
+
+        if (get_path_for_dirent(entry, name, sizeof(name)) != B_OK)
+        {
+            continue;
+        }
+
+        onFound(context, name);
+    }
+
+    return 0;
+}
+#else
+#error "Don't know how to enumerate mount points on this platform"
 #endif
 
 int32_t SystemNative_GetSpaceInfoForMountPoint(const char* name, MountPointInformation* mpi)
@@ -140,6 +180,9 @@ SystemNative_GetFormatInfoForMountPoint(const char* name, char* formatNameBuffer
 #if HAVE_NON_LEGACY_STATFS
     struct statfs stats;
     int result = statfs(name, &stats);
+#elif defined(__HAIKU__)
+    struct fs_info stats;
+    int result = fs_stat_dev(dev_for_path(name), &stats);
 #else
     struct statvfs stats;
     int result = statvfs(name, &stats);
@@ -166,6 +209,17 @@ SystemNative_GetFormatInfoForMountPoint(const char* name, char* formatNameBuffer
         assert(formatType != NULL);
         *formatType = (int64_t)(stats.f_type);
         SafeStringCopy(formatNameBuffer, Int32ToSizeT(bufferLength), "");
+#elif defined(__HAIKU__)
+        if (bufferLength < B_OS_NAME_LENGTH)
+        {
+            result = ERANGE;
+            *formatType = 0;
+        }
+        else
+        {
+            SafeStringCopy(formatNameBuffer, Int32ToSizeT(bufferLength), stats.fsh_name);
+            *formatType = -1;
+        }
 #else
         *formatType = 0;
 #endif

src/native/libs/configure.cmake

@@ -324,7 +324,17 @@ check_struct_has_member(
     "sys/mount.h"
     HAVE_STATVFS_FSTYPENAME)
 
+check_struct_has_member(
+    "struct statvfs"
+    f_basetype
+    "sys/statvfs.h"
+    HAVE_STATVFS_BASETYPE)
+
 set(CMAKE_EXTRA_INCLUDE_FILES dirent.h)
+check_type_size(
+    "((struct dirent*)0)->d_name"
+    DIRENT_NAME_SIZE)
+set(CMAKE_EXTRA_INCLUDE_FILES)
 
 # statfs: Find whether this struct exists
 if (HAVE_STATFS_FSTYPENAME OR HAVE_STATVFS_FSTYPENAME)
@@ -882,6 +892,10 @@ check_include_files(
     "dlfcn.h"
     HAVE_DLFCN_H)
 
+check_include_files(
+    "sys/statfs.h"
+    HAVE_SYS_STATFS_H)
+
 check_include_files(
     "sys/statvfs.h"
     HAVE_SYS_STATVFS_H)
@@ -955,6 +969,10 @@ check_include_files(
     "sys/mntent.h"
     HAVE_SYS_MNTENT_H)
 
+check_include_files(
+    "mntent.h"
+    HAVE_MNTENT_H)
+
 check_include_files(
     "stdint.h;net/if_media.h"
     HAVE_NET_IFMEDIA_H)