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Add some simple write buffering to LibC's stdio.

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Plumb it all the way to the VirtualConsole. Also fix /bin/cat to write()
the whole chunks we get from read() directly to stdout.
This commit is contained in:
Andreas Kling
2018-11-08 01:23:23 +01:00
parent e287f8ef3a
commit da3857b0c2
10 changed files with 42 additions and 22 deletions
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8
Kernel/Process.cpp
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@@ -29,15 +29,19 @@
#define VALIDATE_USER_READ(b, s) \
do { \
LinearAddress laddr((dword)(b)); \
if (!validate_user_read(laddr) || !validate_user_read(laddr.offset((s) - 1))) \
if (!validate_user_read(laddr) || !validate_user_read(laddr.offset((s) - 1))) { \
dbgprintf("Bad read address passed to syscall: %p +%u\n", laddr.get(), (s)); \
return -EFAULT; \
} \
} while(0)
#define VALIDATE_USER_WRITE(b, s) \
do { \
LinearAddress laddr((dword)(b)); \
if (!validate_user_write(laddr) || !validate_user_write(laddr.offset((s) - 1))) \
if (!validate_user_write(laddr) || !validate_user_write(laddr.offset((s) - 1))) { \
dbgprintf("Bad write address passed to syscall: %p +%u\n", laddr.get(), (s)); \
return -EFAULT; \
} \
} while(0)
static const DWORD defaultStackSize = 16384;