mirror of
https://github.com/ish-app/ish.git
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58 lines
1.2 KiB
C
58 lines
1.2 KiB
C
#include <sys/stat.h>
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#include <unistd.h>
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#include "kernel/calls.h"
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#include "fs/fd.h"
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#include "fs/real.h"
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#include "debug.h"
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static fd_t pipe_f_create(int pipe_fd, int flags) {
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struct fd *fd = adhoc_fd_create(&realfs_fdops);
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if (fd == NULL)
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return _ENOMEM;
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fd->real_fd = pipe_fd;
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fd->stat.mode = S_IFIFO | 0660;
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fd->stat.uid = current->uid;
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fd->stat.gid = current->gid;
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return f_install(fd, flags);
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}
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int_t sys_pipe2(addr_t pipe_addr, int_t flags) {
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STRACE("pipe2(%#x, %#x)", pipe_addr, flags);
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if (flags & ~(O_CLOEXEC_|O_NONBLOCK_)) {
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FIXME("unsupported pipe2 flags");
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return _EINVAL;
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}
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int p[2];
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int err = pipe(p);
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if (err < 0)
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return err;
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int fp[2];
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err = fp[0] = pipe_f_create(p[0], flags);
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if (fp[0] < 0)
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goto close_pipe;
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err = fp[1] = pipe_f_create(p[1], flags);
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if (fp[1] < 0)
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goto close_fake_0;
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err = _EFAULT;
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if (user_put(pipe_addr, fp))
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goto close_fake_1;
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STRACE(" [%d %d]", fp[0], fp[1]);
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return 0;
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close_fake_1:
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f_close(fp[1]);
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close_fake_0:
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f_close(fp[0]);
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close_pipe:
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close(p[0]);
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close(p[1]);
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return err;
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}
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int_t sys_pipe(addr_t pipe_addr) {
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return sys_pipe2(pipe_addr, 0);
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}
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