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Split out io_fd_t

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This commit is contained in:
Cheer Xiao 2013-01-15 15:37:33 +08:00
parent f1b375b042
commit 6f35792c74
5 changed files with 40 additions and 23 deletions
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10
exec.cpp
View file

@ -406,11 +406,6 @@ static bool io_transmogrify(const io_chain_t &in_chain, io_chain_t &out_chain, s
*/
case IO_FILE:
{
out.reset(new io_data_t());
out->fd = in->fd;
out->io_mode = IO_FD;
out->param2.close_old = 1;
int fd;
if ((fd=open(in->filename_cstr, in->param2.flags, OPEN_MASK))==-1)
{
@ -424,7 +419,7 @@ static bool io_transmogrify(const io_chain_t &in_chain, io_chain_t &out_chain, s
}
opened_fds.push_back(fd);
out->param1.old_fd = fd;
out.reset(new io_fd_t(in->fd, fd, true));
break;
}
@ -852,7 +847,8 @@ void exec(parser_t &parser, job_t *j)
case IO_FD:
{
builtin_stdin = in->param1.old_fd;
CAST_INIT(const io_fd_t *, in_fd, in.get());
builtin_stdin = in_fd->old_fd;
break;
}
case IO_PIPE:

8
io.cpp
View file

@ -61,9 +61,6 @@ void io_data_t::print() const
case IO_PIPE:
fprintf(stderr, "pipe {%d, %d}\n", param1.pipe_fd[0], param1.pipe_fd[1]);
break;
case IO_FD:
fprintf(stderr, "FD map %d -> %d\n", param1.old_fd, fd);
break;
case IO_BUFFER:
fprintf(stderr, "buffer %p (size %lu)\n", out_buffer_ptr(), out_buffer_size());
break;
@ -75,6 +72,11 @@ void io_close_t::print() const
fprintf(stderr, "close %d\n", fd);
}
void io_fd_t::print() const
{
fprintf(stderr, "FD map %d -> %d\n", old_fd, fd);
}
void io_buffer_read(io_data_t *d)
{
exec_close(d->param1.pipe_fd[1]);

22
io.h
View file

@ -37,8 +37,6 @@ public:
{
/** Fds for IO_PIPE and for IO_BUFFER */
int pipe_fd[2];
/** fd to redirect specified fd to, for IO_FD */
int old_fd;
} param1;
@ -47,8 +45,6 @@ public:
{
/** file creation flags to send to open for IO_FILE */
int flags;
/** Whether to close old_fd for IO_FD */
int close_old;
} param2;
/** Filename IO_FILE. malloc'd. This needs to be used after fork, so don't use wcstring here. */
@ -127,6 +123,24 @@ public:
virtual void print() const;
};
class io_fd_t : public io_data_t
{
public:
/** fd to redirect specified fd to */
int old_fd;
/** Whether to close old_fd */
int close_old;
virtual void print() const;
io_fd_t(int f, int old, bool close = false) :
io_data_t(IO_FD, f),
old_fd(old),
close_old(close)
{
}
};
class io_chain_t : public std::vector<shared_ptr<io_data_t> >
{
public:

10
parser.cpp
View file

@ -1607,13 +1607,11 @@ void parser_t::parse_job_argument_list(process_t *p,
{
wchar_t *end;
new_io.reset(new io_data_t(IO_FD, fd));
errno = 0;
new_io->param1.old_fd = fish_wcstoi(target.c_str(), &end, 10);
int old_fd = fish_wcstoi(target.c_str(), &end, 10);
if ((new_io->param1.old_fd < 0) ||
errno || *end)
if (old_fd < 0 || errno || *end)
{
error(SYNTAX_ERROR,
tok_get_pos(tok),
@ -1622,6 +1620,10 @@ void parser_t::parse_job_argument_list(process_t *p,
tok_next(tok);
}
else
{
new_io.reset(new io_fd_t(fd, old_fd));
}
}
break;
}

11
postfork.cpp
View file

@ -169,7 +169,7 @@ static int handle_child_io(io_chain_t &io_chain)
io_data_t *io = io_chain.at(idx).get();
int tmp;
if (io->io_mode == IO_FD && io->fd == io->param1.old_fd)
if (io->io_mode == IO_FD && io->fd == static_cast<io_fd_t*>(io)->old_fd)
{
continue;
}
@ -232,7 +232,7 @@ static int handle_child_io(io_chain_t &io_chain)
*/
close(io->fd);
if (dup2(io->param1.old_fd, io->fd) == -1)
if (dup2(static_cast<const io_fd_t *>(io)->old_fd, io->fd) == -1)
{
debug_safe_int(1, FD_ERROR, io->fd);
safe_perror("dup2");
@ -443,8 +443,10 @@ bool fork_actions_make_spawn_properties(posix_spawnattr_t *attr, posix_spawn_fil
{
shared_ptr<const io_data_t> io = j->io.at(idx);
if (io->io_mode == IO_FD && io->fd == io->param1.old_fd)
if (io->io_mode == IO_FD)
{
CAST_INIT(const io_fd_t *, io_fd, io.get());
if (io->fd == io_fd->old_fd)
continue;
}
@ -472,8 +474,9 @@ bool fork_actions_make_spawn_properties(posix_spawnattr_t *attr, posix_spawn_fil
case IO_FD:
{
CAST_INIT(const io_fd_t *, io_fd, io.get());
if (! err)
err = posix_spawn_file_actions_adddup2(actions, io->param1.old_fd /* from */, io->fd /* to */);
err = posix_spawn_file_actions_adddup2(actions, io_fd->old_fd /* from */, io->fd /* to */);
break;
}