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authorRich Felker <dalias@aerifal.cx>2012-10-24 21:16:06 -0400
committerRich Felker <dalias@aerifal.cx>2012-10-24 21:16:06 -0400
commit892cafff665b44d238e3b664f61ca38dd965cba6 (patch)
treec65353fe88b0d78025e113b77ed8728a2b4bc8d4 /src/stdio/__uflow.c
parent708c91f4e9be2cfd6d35e71361956e13f3201b85 (diff)
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greatly improve freopen behavior
1. don't open /dev/null just as a basis to copy flags; use shared __fmodeflags function to get the right file flags for the mode. 2. handle the case (probably invalid, but whatever) case where the original stream's file descriptor was closed; previously, the logic re-closed it. 3. accept the "e" mode flag for close-on-exec; update dup3 to fallback to using dup2 so we can simply call __dup3 instead of putting fallback logic in freopen itself.
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