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Add epoll and do more release readiness changes

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This change also pays off some of the remaining technical debt with
stdio, file descriptors, and memory managemnt polyfills.
This commit is contained in:
Justine Tunney 2020-11-28 12:01:51 -08:00
parent a9ea949df8
commit 3e4fd4b0ad
271 changed files with 5706 additions and 1365 deletions
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17
libc/stdio/fscanf.c
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@ -21,14 +21,25 @@
#include "libc/stdio/stdio.h"
/**
* Stream decoder.
* @see libc/fmt/vcscanf.h
* Decodes data from stream.
*
* To read a line of data from a well-formed trustworthy file:
*
* int x, y;
* char text[256];
* fscanf(f, "%d %d %s\n", &x, &y, text);
*
* Please note that this function is brittle by default, which makes it
* a good fit for yolo coding. With some toil it can be used in a way
* that makes it reasonably hardened although getline() may be better.
*
* @see libc/fmt/vcscanf.c
*/
int(fscanf)(FILE *stream, const char *fmt, ...) {
int rc;
va_list va;
va_start(va, fmt);
rc = (vcscanf)((int (*)(void *))fgetc, stream, fmt, va);
rc = (vcscanf)((int (*)(void *))fgetc, (void *)ungetc, stream, fmt, va);
va_end(va);
return rc;
}