56 lines
1.9 KiB
C
56 lines
1.9 KiB
C
/* ************************************************************************** */
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/* */
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/* ::: :::::::: */
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/* pipe.c :+: :+: :+: */
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/* +:+ +:+ +:+ */
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/* By: maiboyer <maiboyer@student.42.fr> +#+ +:+ +#+ */
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/* +#+#+#+#+#+ +#+ */
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/* Created: 2024/01/04 17:59:48 by maiboyer #+# #+# */
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/* Updated: 2024/08/01 06:56:14 by maiboyer ### ########.fr */
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/* */
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/* ************************************************************************** */
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#include "me/fs/fs.h"
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#include "me/os/os.h"
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#include "me/str/str.h"
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static t_error _pipe_get_fd_slot(struct s_file_slot **read,
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struct s_file_slot **write)
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{
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(*read) = get_unused_fd_slot();
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if ((*read) == NULL)
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return (ERROR);
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(*read)->ty = SLOT_FD;
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(*write) = get_unused_fd_slot();
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if ((*write) == NULL)
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return ((*read)->ty = SLOT_UNUSED, ERROR);
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(*write)->ty = SLOT_FD;
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return (NO_ERROR);
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}
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t_error create_pipe(t_pipe *out)
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{
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int fd[2];
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struct s_file_slot *read;
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struct s_file_slot *write;
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if (_pipe_get_fd_slot(&read, &write))
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return (ERROR);
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if (pipe(fd))
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{
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read->ty = SLOT_UNUSED;
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write->ty = SLOT_UNUSED;
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return (ERROR);
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}
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read->slot.fd.fd = fd[0];
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write->slot.fd.fd = fd[0];
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read->slot.fd.type = FD_PIPE;
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write->slot.fd.type = FD_PIPE;
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read->slot.fd.perms = FD_READ;
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write->slot.fd.perms = FD_WRITE;
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read->slot.fd.name = str_clone("<pipe[read]>");
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write->slot.fd.name = str_clone("<pipe[write]>");
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out->read = &read->slot.fd;
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out->write = &write->slot.fd;
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return (NO_ERROR);
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}
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