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Add torture test for zipos file descriptors

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This change hardens the code for opening /zip/ files using the system
call interface. Thread safety and signal safety has been improved for
file descriptors in general. We now document fixed addresses that are
needed for low level allocations.
This commit is contained in:
Justine Tunney 2022-06-15 16:19:50 -07:00
parent 579080cd4c
commit e466dd0553
44 changed files with 2981 additions and 307 deletions
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4
libc/runtime/memtrack.internal.h
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@ -26,6 +26,10 @@ COSMOPOLITAN_C_START_
#define kFixedmapStart _kMem(0x300000000000, 0x000040000000)
#define kFixedmapSize \
_kMem(0x400000000000 - 0x300000000000, 0x000070000000 - 0x000040000000)
#define kMemtrackFdsStart _kMem(0x6fe000000000, 0x80000000)
#define kMemtrackFdsSize _kMem(0x001000000000, 0x04000000)
#define kMemtrackZiposStart _kMem(0x6fd000000000, 0x84000000)
#define kMemtrackZiposSize _kMem(0x001000000000, 0x20000000)
#define _kMmi(VSPACE) \
ROUNDUP(VSPACE / FRAMESIZE * (intptr_t)sizeof(struct MemoryInterval), \
FRAMESIZE)