libgloss: riscv: Process O_EXCL before open() call in semihosting #76
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Semihosting does not support O_EXCL flag. If O_WRONLY | O_CREAT | O_EXCL combination is passed, then we need to check existence of a file manually and emit EEXIST error if it already exists. Otherwise, let semihosting to open a file in SEMIHOST_MODE_W mode. Signed-off-by: Yuriy Kolerov <[email protected]>
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Semihosting does not support O_EXCL flag. If O_WRONLY | O_CREAT | O_EXCL combination is passed, then we need to check existence of a file manually and emit EEXIST error if it already exists. Otherwise, let semihosting to open a file in SEMIHOST_MODE_W mode.