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libc: add support for 'ftruncate()' 

Fixes #307.
This commit is contained in:
Christian Prochaska 2012-08-02 15:17:24 +02:00 committed by Norman Feske
parent 280fc59edf
commit dcfcbce856
22 changed files with 283 additions and 94 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
libports/include/libc-plugin/plugin.h
View File

@ -77,6 +77,7 @@ namespace Libc {
virtual void freeaddrinfo(struct ::addrinfo *res);
virtual int fstat(File_descriptor *, struct stat *buf);
virtual int fsync(File_descriptor *);
virtual int ftruncate(File_descriptor *, ::off_t length);
virtual int getaddrinfo(const char *node, const char *service,
const struct ::addrinfo *hints,
struct ::addrinfo **res);

1
libports/src/lib/libc/dummies.cc
View File

@ -50,7 +50,6 @@ DUMMY(-1, _fpathconf)
DUMMY(-1, fpathconf)
DUMMY(-1, freebsd7___semctl)
DUMMY(-1, fstatat)
DUMMY(-1, ftruncate)
DUMMY(-1, getcontext)
DUMMY( 0, __getcwd)
DUMMY( 0, getdtablesize)

4
libports/src/lib/libc/file_operations.cc
View File

@ -219,6 +219,10 @@ extern "C" int fsync(int libc_fd) {
FD_FUNC_WRAPPER(fsync, libc_fd); }
extern "C" int ftruncate(int libc_fd, ::off_t length) {
FD_FUNC_WRAPPER(ftruncate, libc_fd, length); }
extern "C" int getaddrinfo(const char *node, const char *service,
const struct addrinfo *hints,
struct addrinfo **res)

1
libports/src/lib/libc/plugin.cc
View File

@ -154,6 +154,7 @@ DUMMY(int, -1, fchdir, (File_descriptor *));
DUMMY(int, -1, fcntl, (File_descriptor *, int cmd, long arg));
DUMMY(int, -1, fstat, (File_descriptor *, struct stat *));
DUMMY(int, -1, fsync, (File_descriptor *));
DUMMY(int, -1, ftruncate, (File_descriptor *, ::off_t));
DUMMY(ssize_t, -1, getdirentries, (File_descriptor *, char *, ::size_t, ::off_t *));
DUMMY(int, -1, getpeername, (File_descriptor *, struct sockaddr *, socklen_t *));
DUMMY(int, -1, getsockname, (File_descriptor *, struct sockaddr *, socklen_t *));

27
libports/src/lib/libc_ffat/plugin.cc
View File

@ -312,6 +312,33 @@ class Plugin : public Libc::Plugin
}
}
int ftruncate(Libc::File_descriptor *fd, ::off_t length)
{
using namespace Ffat;
/* 'f_truncate()' truncates to the current seek pointer */
if (lseek(fd, length, SEEK_SET) == -1)
return -1;
FRESULT res = f_truncate(_get_ffat_file(fd));
switch(res) {
case FR_OK:
return 0;
case FR_DISK_ERR:
case FR_INT_ERR:
case FR_NOT_READY:
case FR_INVALID_OBJECT:
errno = EIO;
return -1;
default:
/* not supposed to occur according to the libffat documentation */
PERR("f_truncate() returned an unexpected error code");
return -1;
}
}
ssize_t getdirentries(Libc::File_descriptor *fd, char *buf,
::size_t nbytes, ::off_t *basep)
{

19
libports/src/lib/libc_fs/plugin.cc
View File

@ -356,6 +356,25 @@ class Plugin : public Libc::Plugin
return -1;
}
int ftruncate(Libc::File_descriptor *fd, ::off_t length)
{
File_system::Node_handle node_handle = context(fd)->node_handle();
File_system::File_handle &file_handle =
static_cast<File_system::File_handle&>(node_handle);
try {
file_system()->truncate(file_handle, length);
} catch (File_system::Invalid_handle) {
errno = EINVAL;
return -1;
} catch (File_system::Permission_denied) {
errno = EPERM;
return -1;
}
return 0;
}
/*
* *basep does not get initialized by the libc and is therefore
* useless for determining a specific directory index. This

41
libports/src/server/ffat_fs/main.cc
View File

@ -31,6 +31,13 @@ namespace Ffat { extern "C" {
#include <ffat/ff.h>
} }
/*
* This macro is defined in later versions of the FatFs lib, but not in the
* one currently used for Genode.
*/
#define f_tell(fp) ((fp)->fptr)
using namespace Genode;
@ -767,14 +774,44 @@ namespace File_system {
using namespace Ffat;
FRESULT res = f_truncate(file->ffat_fil());
/* 'f_truncate()' truncates to the current seek pointer */
FRESULT res = f_lseek(file->ffat_fil(), size);
switch(res) {
case FR_OK:
/* according to the FatFs documentation this can happen */
if (f_tell(file->ffat_fil()) != size) {
PERR("f_lseek() could not seek to offset %llu", size);
return;
}
break;
case FR_DISK_ERR:
PERR("f_lseek() failed with error code FR_DISK_ERR");
return;
case FR_INT_ERR:
PERR("f_lseek() failed with error code FR_INT_ERR");
return;
case FR_NOT_READY:
PERR("f_lseek() failed with error code FR_NOT_READY");
return;
case FR_INVALID_OBJECT:
PERR("f_lseek() failed with error code FR_INVALID_OBJECT");
throw Invalid_handle();
default:
/* not supposed to occur according to the libffat documentation */
PERR("f_lseek() returned an unexpected error code");
return;
}
res = f_truncate(file->ffat_fil());
switch(res) {
case FR_OK:
return;
case FR_INVALID_OBJECT:
PERR("f_truncate() failed with error code FR_INVALID_OBJECT");
return;
throw Invalid_handle();
case FR_DISK_ERR:
PERR("f_truncate() failed with error code FR_DISK_ERR");
return;

15
libports/src/test/libc_ffat/main.cc
View File

@ -47,6 +47,7 @@ int main(int argc, char *argv[])
char const *file_name = "test.tst";
char const *file_name2 = "test2.tst";
char const *file_name3 = "test3.tst";
char const *file_name4 = "test4.tst";
char const *pattern = "a single line of text";
size_t pattern_size = strlen(pattern) + 1;
@ -165,6 +166,20 @@ int main(int argc, char *argv[])
}
}
/* test 'ftruncate()' */
CALL_AND_CHECK(fd, open(file_name4, O_CREAT | O_WRONLY), fd >= 0, "file_name=%s", file_name4);
CALL_AND_CHECK(ret, ftruncate(fd, 100), ret == 0, ""); /* increase size */
CALL_AND_CHECK(ret, close(fd), ret == 0, "");
CALL_AND_CHECK(ret, stat(file_name4, &stat_buf),
(ret == 0) && (stat_buf.st_size == 100),
"file_name=%s", file_name4);
CALL_AND_CHECK(fd, open(file_name4, O_WRONLY), fd >= 0, "file_name=%s", file_name4);
CALL_AND_CHECK(ret, ftruncate(fd, 10), ret == 0, ""); /* decrease size */
CALL_AND_CHECK(ret, close(fd), ret == 0, "");
CALL_AND_CHECK(ret, stat(file_name4, &stat_buf),
(ret == 0) && (stat_buf.st_size == 10),
"file_name=%s", file_name4);
if (i < (iterations - 1))
sleep(2);
}

8
os/src/server/ram_fs/file.h
View File

@ -88,6 +88,14 @@ namespace File_system {
}
file_size_t length() const { return _length; }
void truncate(file_size_t size)
{
if (size < _chunk.used_size())
_chunk.truncate(size);
else
_length = size;
}
};
}

10
os/src/server/ram_fs/main.cc
View File

@ -373,7 +373,15 @@ namespace File_system {
destroy(env()->heap(), node);
}
void truncate(File_handle, file_size_t size) { }
void truncate(File_handle file_handle, file_size_t size)
{
if (!_writable)
throw Permission_denied();
File *file = _handle_registry.lookup_and_lock(file_handle);
Node_lock_guard file_guard(*file);
file->truncate(size);
}
void move(Dir_handle from_dir_handle, Name const &from_name,
Dir_handle to_dir_handle, Name const &to_name)

2
ports/include/noux_session/noux_session.h
View File

@ -40,6 +40,7 @@ namespace Noux {
SYSCALL_STAT,
SYSCALL_LSTAT,
SYSCALL_FSTAT,
SYSCALL_FTRUNCATE,
SYSCALL_FCNTL,
SYSCALL_OPEN,
SYSCALL_CLOSE,
@ -83,6 +84,7 @@ namespace Noux {
NOUX_DECL_SYSCALL_NAME(STAT)
NOUX_DECL_SYSCALL_NAME(LSTAT)
NOUX_DECL_SYSCALL_NAME(FSTAT)
NOUX_DECL_SYSCALL_NAME(FTRUNCATE)
NOUX_DECL_SYSCALL_NAME(FCNTL)
NOUX_DECL_SYSCALL_NAME(OPEN)
NOUX_DECL_SYSCALL_NAME(CLOSE)

160
ports/include/noux_session/sysio.h
View File

@ -271,126 +271,130 @@ namespace Noux {
char ai_canonname[255];
};
enum General_error { ERR_FD_INVALID, NUM_GENERAL_ERRORS };
enum Stat_error { STAT_ERR_NO_ENTRY = NUM_GENERAL_ERRORS };
enum Fchdir_error { FCHDIR_ERR_NOT_DIR = NUM_GENERAL_ERRORS };
enum Fcntl_error { FCNTL_ERR_CMD_INVALID = NUM_GENERAL_ERRORS };
enum Open_error { OPEN_ERR_UNACCESSIBLE, OPEN_ERR_NO_PERM,
OPEN_ERR_EXISTS };
enum Execve_error { EXECVE_NONEXISTENT = NUM_GENERAL_ERRORS };
enum Unlink_error { UNLINK_ERR_NO_ENTRY, UNLINK_ERR_NO_PERM };
enum Rename_error { RENAME_ERR_NO_ENTRY, RENAME_ERR_CROSS_FS,
RENAME_ERR_NO_PERM };
enum Mkdir_error { MKDIR_ERR_EXISTS, MKDIR_ERR_NO_ENTRY,
MKDIR_ERR_NO_SPACE, MKDIR_ERR_NO_PERM,
MKDIR_ERR_NAME_TOO_LONG};
enum General_error { ERR_FD_INVALID, NUM_GENERAL_ERRORS };
enum Stat_error { STAT_ERR_NO_ENTRY = NUM_GENERAL_ERRORS };
enum Fchdir_error { FCHDIR_ERR_NOT_DIR = NUM_GENERAL_ERRORS };
enum Fcntl_error { FCNTL_ERR_CMD_INVALID = NUM_GENERAL_ERRORS };
enum Ftruncate_error { FTRUNCATE_ERR_NO_PERM = NUM_GENERAL_ERRORS };
enum Open_error { OPEN_ERR_UNACCESSIBLE, OPEN_ERR_NO_PERM,
OPEN_ERR_EXISTS };
enum Execve_error { EXECVE_NONEXISTENT = NUM_GENERAL_ERRORS };
enum Unlink_error { UNLINK_ERR_NO_ENTRY, UNLINK_ERR_NO_PERM };
enum Rename_error { RENAME_ERR_NO_ENTRY, RENAME_ERR_CROSS_FS,
RENAME_ERR_NO_PERM };
enum Mkdir_error { MKDIR_ERR_EXISTS, MKDIR_ERR_NO_ENTRY,
MKDIR_ERR_NO_SPACE, MKDIR_ERR_NO_PERM,
MKDIR_ERR_NAME_TOO_LONG};
union {
General_error general;
Stat_error stat;
Fchdir_error fchdir;
Fcntl_error fcntl;
Open_error open;
Execve_error execve;
Unlink_error unlink;
Rename_error rename;
Mkdir_error mkdir;
General_error general;
Stat_error stat;
Fchdir_error fchdir;
Fcntl_error fcntl;
Ftruncate_error ftruncate;
Open_error open;
Execve_error execve;
Unlink_error unlink;
Rename_error rename;
Mkdir_error mkdir;
} error;
union {
SYSIO_DECL(getcwd, { }, { Path path; });
SYSIO_DECL(getcwd, { }, { Path path; });
SYSIO_DECL(write, { int fd; size_t count; Chunk chunk; },
{ size_t count; });
SYSIO_DECL(write, { int fd; size_t count; Chunk chunk; },
{ size_t count; });
SYSIO_DECL(stat, { Path path; }, { Stat st; });
SYSIO_DECL(stat, { Path path; }, { Stat st; });
SYSIO_DECL(fstat, { int fd; }, { Stat st; });
SYSIO_DECL(fstat, { int fd; }, { Stat st; });
SYSIO_DECL(fcntl, { int fd; long long_arg; Fcntl_cmd cmd; },
{ int result; });
SYSIO_DECL(ftruncate, { int fd; off_t length; }, { });
SYSIO_DECL(open, { Path path; int mode; }, { int fd; });
SYSIO_DECL(fcntl, { int fd; long long_arg; Fcntl_cmd cmd; },
{ int result; });
SYSIO_DECL(close, { int fd; }, { });
SYSIO_DECL(open, { Path path; int mode; }, { int fd; });
SYSIO_DECL(ioctl, : Ioctl_in { int fd; }, : Ioctl_out { });
SYSIO_DECL(close, { int fd; }, { });
SYSIO_DECL(lseek, { int fd; off_t offset; Lseek_whence whence; },
{ off_t offset; });
SYSIO_DECL(ioctl, : Ioctl_in { int fd; }, : Ioctl_out { });
SYSIO_DECL(dirent, { int fd; }, { Dirent entry; });
SYSIO_DECL(lseek, { int fd; off_t offset; Lseek_whence whence; },
{ off_t offset; });
SYSIO_DECL(fchdir, { int fd; }, { });
SYSIO_DECL(dirent, { int fd; }, { Dirent entry; });
SYSIO_DECL(read, { int fd; size_t count; },
{ Chunk chunk; size_t count; });
SYSIO_DECL(fchdir, { int fd; }, { });
SYSIO_DECL(execve, { Path filename; Args args; Env env; }, { });
SYSIO_DECL(read, { int fd; size_t count; },
{ Chunk chunk; size_t count; });
SYSIO_DECL(select, { Select_fds fds; Select_timeout timeout; },
{ Select_fds fds; });
SYSIO_DECL(execve, { Path filename; Args args; Env env; }, { });
SYSIO_DECL(fork, { addr_t ip; addr_t sp;
addr_t parent_cap_addr; },
{ int pid; });
SYSIO_DECL(select, { Select_fds fds; Select_timeout timeout; },
{ Select_fds fds; });
SYSIO_DECL(getpid, { }, { int pid; });
SYSIO_DECL(fork, { addr_t ip; addr_t sp;
addr_t parent_cap_addr; },
{ int pid; });
SYSIO_DECL(wait4, { int pid; bool nohang; },
{ int pid; int status; });
SYSIO_DECL(pipe, { }, { int fd[2]; });
SYSIO_DECL(getpid, { }, { int pid; });
SYSIO_DECL(dup2, { int fd; int to_fd; }, { });
SYSIO_DECL(wait4, { int pid; bool nohang; },
{ int pid; int status; });
SYSIO_DECL(pipe, { }, { int fd[2]; });
SYSIO_DECL(unlink, { Path path; }, { });
SYSIO_DECL(dup2, { int fd; int to_fd; }, { });
SYSIO_DECL(rename, { Path from_path; Path to_path; }, { });
SYSIO_DECL(unlink, { Path path; }, { });
SYSIO_DECL(mkdir, { Path path; int mode; }, { });
SYSIO_DECL(rename, { Path from_path; Path to_path; }, { });
SYSIO_DECL(socket, { int domain; int type; int protocol; },
{ int fd; });
SYSIO_DECL(mkdir, { Path path; int mode; }, { });
SYSIO_DECL(socket, { int domain; int type; int protocol; },
{ int fd; });
/* XXX for now abuse Chunk for passing optval */
SYSIO_DECL(getsockopt, { int fd; int level; int optname; Chunk optval;
socklen_t optlen; }, { int result; });
SYSIO_DECL(getsockopt, { int fd; int level; int optname; Chunk optval;
socklen_t optlen; }, { int result; });
SYSIO_DECL(setsockopt, { int fd; int level;
int optname; Chunk optval;
socklen_t optlen; }, { });
SYSIO_DECL(setsockopt, { int fd; int level;
int optname; Chunk optval;
socklen_t optlen; }, { });
SYSIO_DECL(accept, { int fd; struct sockaddr addr; socklen_t addrlen; },
{ int fd; });
SYSIO_DECL(accept, { int fd; struct sockaddr addr; socklen_t addrlen; },
{ int fd; });
SYSIO_DECL(bind, { int fd; struct sockaddr addr;
socklen_t addrlen; }, { int result; });
SYSIO_DECL(bind, { int fd; struct sockaddr addr;
socklen_t addrlen; }, { int result; });
SYSIO_DECL(getpeername, { int fd; struct sockaddr addr;
socklen_t addrlen; }, { });
SYSIO_DECL(listen, { int fd; int type; int backlog; },
{ int result; });
SYSIO_DECL(listen, { int fd; int type; int backlog; },
{ int result; });
SYSIO_DECL(send, { int fd; Chunk buf; size_t len; int flags; },
{ ssize_t len; });
SYSIO_DECL(send, { int fd; Chunk buf; size_t len; int flags; },
{ ssize_t len; });
SYSIO_DECL(sendto, { int fd; Chunk buf; size_t len; int flags;
struct sockaddr dest_addr; socklen_t addrlen; },
{ ssize_t len; });
SYSIO_DECL(sendto, { int fd; Chunk buf; size_t len; int flags;
struct sockaddr dest_addr; socklen_t addrlen; },
{ ssize_t len; });
SYSIO_DECL(recv, { int fd; Chunk buf; size_t len; int flags; },
{ size_t len; });
SYSIO_DECL(recv, { int fd; Chunk buf; size_t len; int flags; },
{ size_t len; });
SYSIO_DECL(recvfrom, { int fd; Chunk buf; size_t len; int flags;
struct sockaddr src_addr; socklen_t addrlen; },
{ size_t len; });
SYSIO_DECL(recvfrom, { int fd; Chunk buf; size_t len; int flags;
struct sockaddr src_addr; socklen_t addrlen; },
{ size_t len; });
SYSIO_DECL(shutdown, { int fd; int how; }, { });
SYSIO_DECL(shutdown, { int fd; int how; }, { });
SYSIO_DECL(connect, { int fd; struct sockaddr addr; socklen_t addrlen; },
{ int result; });
SYSIO_DECL(connect, { int fd; struct sockaddr addr; socklen_t addrlen; },
{ int result; });
SYSIO_DECL(getaddrinfo, { Hostname hostname; Servname servname;
Addrinfo hints;

16
ports/src/lib/libc_noux/plugin.cc
View File

@ -552,6 +552,7 @@ namespace {
int fstat(Libc::File_descriptor *, struct stat *);
int fsync(Libc::File_descriptor *);
int fstatfs(Libc::File_descriptor *, struct statfs *);
int ftruncate(Libc::File_descriptor *, ::off_t);
int fcntl(Libc::File_descriptor *, int, long);
ssize_t getdirentries(Libc::File_descriptor *, char *, ::size_t, ::off_t *);
::off_t lseek(Libc::File_descriptor *, ::off_t offset, int whence);
@ -855,6 +856,21 @@ namespace {
}
int Plugin::ftruncate(Libc::File_descriptor *fd, ::off_t length)
{
sysio()->ftruncate_in.fd = noux_fd(fd->context);
sysio()->ftruncate_in.length = length;
if (!noux()->syscall(Noux::Session::SYSCALL_FTRUNCATE)) {
switch (sysio()->error.ftruncate) {
case Noux::Sysio::FTRUNCATE_ERR_NO_PERM: errno = EPERM; break;
}
return -1;
}
return 0;
}
int Plugin::fcntl(Libc::File_descriptor *fd, int cmd, long arg)
{
/* copy arguments to sysio */

1
ports/src/noux/dir_file_system.h
View File

@ -518,6 +518,7 @@ namespace Noux {
bool write(Sysio *sysio, Vfs_handle *handle) { return false; }
bool read(Sysio *sysio, Vfs_handle *vfs_handle) { return false; }
bool ftruncate(Sysio *sysio, Vfs_handle *vfs_handle) { return false; }
};
}

5
ports/src/noux/file_io_service.h
View File

@ -24,8 +24,9 @@ namespace Noux {
*/
struct File_io_service
{
virtual bool write(Sysio *sysio, Vfs_handle *vfs_handle) = 0;
virtual bool read(Sysio *sysio, Vfs_handle *vfs_handle) = 0;
virtual bool write(Sysio *sysio, Vfs_handle *vfs_handle) = 0;
virtual bool read(Sysio *sysio, Vfs_handle *vfs_handle) = 0;
virtual bool ftruncate(Sysio *sysio, Vfs_handle *vfs_handle) = 0;
};
}

21
ports/src/noux/fs_file_system.h
View File

@ -516,6 +516,27 @@ namespace Noux {
source.release_packet(packet);
return true;
}
bool ftruncate(Sysio *sysio, Vfs_handle *vfs_handle)
{
Fs_vfs_handle const *handle = static_cast<Fs_vfs_handle *>(vfs_handle);
Sysio::Ftruncate_error error;
try {
_fs.truncate(handle->file_handle(), sysio->ftruncate_in.length);
return true;
} catch (::File_system::Invalid_handle) {
/* should not happen */
error = Sysio::FTRUNCATE_ERR_NO_PERM;
} catch (::File_system::Permission_denied) {
error = Sysio::FTRUNCATE_ERR_NO_PERM;
}
sysio->error.ftruncate = error;
return false;
}
};
}

17
ports/src/noux/io_channel.h
View File

@ -50,14 +50,15 @@ namespace Noux {
virtual ~Io_channel() { }
virtual bool write(Sysio *sysio, size_t &count) { return false; }
virtual bool read(Sysio *sysio) { return false; }
virtual bool fstat(Sysio *sysio) { return false; }
virtual bool fcntl(Sysio *sysio) { return false; }
virtual bool fchdir(Sysio *sysio, Pwd *pwd) { return false; }
virtual bool dirent(Sysio *sysio) { return false; }
virtual bool ioctl(Sysio *sysio) { return false; }
virtual bool lseek(Sysio *sysio) { return false; }
virtual bool write(Sysio *sysio, size_t &count) { return false; }
virtual bool read(Sysio *sysio) { return false; }
virtual bool fstat(Sysio *sysio) { return false; }
virtual bool ftruncate(Sysio *sysio) { return false; }
virtual bool fcntl(Sysio *sysio) { return false; }
virtual bool fchdir(Sysio *sysio, Pwd *pwd) { return false; }
virtual bool dirent(Sysio *sysio) { return false; }
virtual bool ioctl(Sysio *sysio) { return false; }
virtual bool lseek(Sysio *sysio) { return false; }
/**
* Return true if an unblocking condition of the channel is satisfied

10
ports/src/noux/main.cc
View File

@ -121,6 +121,16 @@ bool Noux::Child::syscall(Noux::Session::Syscall sc)
return true;
}
case SYSCALL_FTRUNCATE:
{
Shared_pointer<Io_channel> io = _lookup_channel(_sysio->ftruncate_in.fd);
while (!io->check_unblock(true, false, false))
_block_for_io_channel(io);
return io->ftruncate(_sysio);
}
case SYSCALL_STAT:
case SYSCALL_LSTAT: /* XXX implement difference between 'lstat' and 'stat' */

6
ports/src/noux/tar_file_system.h
View File

@ -468,6 +468,12 @@ namespace Noux {
sysio->read_out.count = count;
return true;
}
bool ftruncate(Sysio *sysio, Vfs_handle *handle)
{
PDBG("called\n");
return false;
}
};
}

2
ports/src/noux/terminal_file_system.h
View File

@ -204,6 +204,8 @@ namespace Noux {
sysio->read_out.count = _terminal.read(sysio->read_out.chunk, sysio->read_in.count);
return true;
}
bool ftruncate(Sysio *sysio, Vfs_handle *vfs_handle) { return false; }
};
}

5
ports/src/noux/vfs_handle.h
View File

@ -74,8 +74,9 @@ namespace Noux {
static bool _msg(char const *sc) {
PERR("%s not supported by file system", sc); return false; }
bool write(Sysio *sysio, Vfs_handle *handle) { return _msg("write"); }
bool read(Sysio *sysio, Vfs_handle *handle) { return _msg("read"); }
bool write(Sysio *sysio, Vfs_handle *handle) { return _msg("write"); }
bool read(Sysio *sysio, Vfs_handle *handle) { return _msg("read"); }
bool ftruncate(Sysio *sysio, Vfs_handle *handle) { return _msg("ftruncate"); }
};
static Pseudo_file_io_service fs;
return &fs;

5
ports/src/noux/vfs_io_channel.h
View File

@ -65,6 +65,11 @@ namespace Noux {
return result;
}
bool ftruncate(Sysio *sysio)
{
return _fh->fs()->ftruncate(sysio, _fh);
}
bool fcntl(Sysio *sysio)
{
switch (sysio->fcntl_in.cmd) {