mirror of
https://github.com/mruby/mruby
synced 2026-06-08 16:11:16 +00:00
Yukihiro "Matz" Matsumoto
12bc2cfaa1
move fd, fd2, pid fields before the bitfield flags while keeping the pointer field last. this preserves the 24-byte struct size (same as 3.4.0) while restoring fd to offset 0 (same as 3.3.0). some external gems (e.g. mruby-polarssl) pass struct mrb_io pointers directly to libraries like mbedtls that expect an int fd at offset 0. the 3.4.0 reorder moved bitfield flags to offset 0, causing these gems to read garbage instead of the file descriptor. fixes #6713 Co-authored-by: Claude <noreply@anthropic.com>
77 lines
2.0 KiB
C
77 lines
2.0 KiB
C
/*
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** io.h - IO class
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*/
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#ifndef MRUBY_IO_H
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#define MRUBY_IO_H
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#include <mruby.h>
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#ifdef MRB_NO_STDIO
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# error IO and File conflicts 'MRB_NO_STDIO' in your build configuration
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#endif
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#if defined(__cplusplus)
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extern "C" {
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#endif
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#if defined(MRB_NO_IO_PREAD_PWRITE) || defined(MRB_WITHOUT_IO_PREAD_PWRITE)
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# undef MRB_USE_IO_PREAD_PWRITE
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#elif !defined(MRB_USE_IO_PREAD_PWRITE)
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# if defined(__unix__) || defined(__MACH__) || defined(MRB_WITH_IO_PREAD_PWRITE)
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# define MRB_USE_IO_PREAD_PWRITE
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# endif
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#endif
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#define MRB_IO_BUF_SIZE 4096
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struct mrb_io_buf {
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short start;
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short len;
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char mem[MRB_IO_BUF_SIZE];
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};
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struct mrb_io {
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int fd; /* file descriptor, or -1 */
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int fd2; /* file descriptor to write if it's different from fd, or -1 */
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int pid; /* child's pid (for pipes) */
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unsigned int readable:1,
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writable:1,
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eof:1,
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sync:1,
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is_socket:1,
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close_fd:1,
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close_fd2:1;
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struct mrb_io_buf *buf;
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};
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#define MRB_O_RDONLY 0x0000
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#define MRB_O_WRONLY 0x0001
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#define MRB_O_RDWR 0x0002
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#define MRB_O_ACCMODE (MRB_O_RDONLY | MRB_O_WRONLY | MRB_O_RDWR)
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#define MRB_O_NONBLOCK 0x0004
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#define MRB_O_APPEND 0x0008
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#define MRB_O_SYNC 0x0010
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#define MRB_O_NOFOLLOW 0x0020
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#define MRB_O_CREAT 0x0040
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#define MRB_O_TRUNC 0x0080
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#define MRB_O_EXCL 0x0100
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#define MRB_O_NOCTTY 0x0200
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#define MRB_O_DIRECT 0x0400
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#define MRB_O_BINARY 0x0800
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#define MRB_O_SHARE_DELETE 0x1000
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#define MRB_O_TMPFILE 0x2000
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#define MRB_O_NOATIME 0x4000
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#define MRB_O_DSYNC 0x00008000
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#define MRB_O_RSYNC 0x00010000
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#define E_IO_ERROR mrb_exc_get_id(mrb, MRB_ERROR_SYM(IOError))
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#define E_EOF_ERROR mrb_exc_get_id(mrb, MRB_ERROR_SYM(EOFError))
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int mrb_io_fileno(mrb_state *mrb, mrb_value io);
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#if defined(__cplusplus)
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} /* extern "C" { */
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#endif
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#endif /* MRUBY_IO_H */
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