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Make read() and write() signal handling atomic

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You would think this is an important bug fix, but unfortunately all UNIX
implementations I've evaluated have a bug in read that causes signals to
not be handled atomically. The only exception is the latest iteration of
Cosmopolitan's read/write polyfill on Windows, which is somewhat ironic.
This commit is contained in:
Justine Tunney 2024-09-15 00:03:48 -07:00
parent c260144843
commit baf70af780
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GPG key ID: BE714B4575D6E328
12 changed files with 520 additions and 153 deletions
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libc/cosmo.h
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@ -14,6 +14,7 @@ char *GetProgramExecutableName(void) libcesque;
void unleaf(void) libcesque;
int __demangle(char *, const char *, size_t) libcesque;
int __is_mangled(const char *) libcesque;
bool IsLinuxModern(void) libcesque;
int LoadZipArgs(int *, char ***) libcesque;
COSMOPOLITAN_C_END_