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Kernel/LibC: opening standard files is done in libc

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Bananymous
2023-05-29 20:21:19 +03:00
parent 9a8512887f
commit fb17af4844
6 changed files with 33 additions and 24 deletions
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11
libc/stdio.cpp
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@@ -27,6 +27,15 @@ FILE* stdin = &s_files[0];
FILE* stdout = &s_files[1];
FILE* stderr = &s_files[2];
extern "C" void _init_stdio()
{
char tty[L_ctermid];
ctermid(tty);
if (open(tty, O_RDONLY) != 0) _exit(1);
if (open(tty, O_WRONLY) != 1) _exit(1);
if (open(tty, O_WRONLY) != 2) _exit(1);
}
void clearerr(FILE* file)
{
file->eof = false;
@@ -155,7 +164,7 @@ FILE* fopen(const char* pathname, const char* mode)
uint8_t flags = 0;
if (mode[0] == 'r')
flags |= O_RDONLY;
else if (mode[0] == 'b')
else if (mode[0] == 'w')
flags |= O_WRONLY | O_CREAT | O_TRUNC;
else if (mode[0] == 'a')
flags |= O_WRONLY | O_CREAT | O_APPEND;

9
libc/unistd.cpp
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@@ -7,6 +7,13 @@
#include <sys/syscall.h>
#include <unistd.h>
extern "C" void _init_stdio();
extern "C" void _init_libc()
{
_init_stdio();
}
void _exit(int status)
{
syscall(SYS_EXIT, status);
@@ -139,4 +146,4 @@ pid_t fork(void)
unsigned int sleep(unsigned int seconds)
{
return syscall(SYS_SLEEP, seconds);
}
}