4a5db1dca7
libc: Add lseek()
2022-10-12 15:37:29 +02:00
928ade123c
libc: Add support for the new seek() system call
2022-10-12 15:32:09 +02:00
e40304f2f1
libc: Add off_t to sys/types.h
2022-10-12 15:30:41 +02:00
e90b90c556
Kernel, libc: Round up to nearest page-aligned size instead of down
2022-10-12 12:15:12 +02:00
d89685bb36
libc: Document sys/types.h
2022-10-12 12:07:42 +02:00
1e16a78106
libc: Document functions in sys/mman.h
2022-10-12 12:06:45 +02:00
0d3e7d4463
libc: Document errno.h
2022-10-12 12:01:07 +02:00
b42c866db8
Correct description for fopen()
2022-10-12 11:58:07 +02:00
9f5b3b76d2
libc: Document the function in fcntl.h
2022-10-12 11:57:49 +02:00
f44411aa46
libc: Document the functions in luna.h
2022-10-12 11:54:29 +02:00
6aabe19fb4
libc: Document the functions in stdio.h
2022-10-12 11:51:32 +02:00
ffc223c2cf
libc: Document functions in stdlib.h
...
Also, add prototypes for calloc() and realloc(), which were already implemented but not in the header.
2022-10-12 11:30:21 +02:00
19ee20b6f5
libc: Document the functions in string.h
2022-10-12 11:19:14 +02:00
38e87d8f8f
libc: Document the functions in unistd.h
2022-10-12 11:02:18 +02:00
44834b8a0f
libc: Implement fputs, fputc, putc and putchar
2022-10-12 10:05:14 +02:00
d3ac590e24
Kernel: Remove the sys_getversion() syscall
...
User programs can now acquire this information by reading /dev/version.
2022-10-11 21:31:28 +02:00
80ab982fe4
libc: make stdout and stderr functional
...
what were before one extern FILE* without reference now are opened by libc on program initialization, to point to /dev/console by default.
2022-10-11 21:08:46 +02:00
53a4b3b85e
libc: Add new flags to open()
...
Since we now have write support, we can add O_WRONLY and O_RDWR to fcntl.h :)
2022-10-11 21:07:21 +02:00
12cf37d0a7
Kernel/syscalls: Modify sys_write to accept a file descriptor and write to it
...
Previously, sys_write only wrote to the tty. Now, it uses the VFS interface, as it should.
2022-10-11 21:06:12 +02:00
1278cec065
VFS: Add a 'type' flag to Nodes, implement EISDIR
2022-10-11 17:48:11 +02:00
6c51477197
libc: Implement ferror() and feof()
2022-10-11 16:57:08 +02:00
93f6be9319
libc: Implement the start of a FILE* API (the standard, portable C way of doing file stuff)
2022-10-10 21:08:57 +02:00
9e0bd39964
libc: Implement wrappers for sys_{open,read,write}
...
read() and close() are in unistd.h, but open() in fnctl.h.
I thought only the definitions for O_SOMETHING were in fnctl.h, but it is as it is.
Don't know why, but let's not anger the Unix gods.
The FILE* C API is pending as well.
2022-10-10 20:45:26 +02:00
da2ede3450
Kernel, libc, userspace: Implement file descriptors
...
Kernel: Implement a descriptor struct which stores the opened node and read offset, and give each task 8 of those.
Implement three syscalls: sys_read, sys_open and sys_close (sys_write still writes to the console instead of using a fd, for now)
Implement three new errors: ENOENT, EBADF and EMFILE.
libc: Implement the new errors, and the new syscalls in syscall().
Also fix _RETURN_WITH_ERRNO() to set errno correctly, which was making strerror() return null, thus crashing perror().
userspace: make init demonstrate the new file API.
2022-10-10 20:21:39 +02:00
abcf1b6118
Define PAGE_SIZE as 4096 and use it everywhere instead of using 4096 as a magic number
2022-10-08 14:52:28 +02:00
1235ce8b32
Avoid magic numbers
2022-10-08 14:44:48 +02:00
ce6ec3585c
Kernel, libc: Add ENOSYS
...
This error is returned by the kernel/C Library when an attempt is made to use a system call that doesn't exist.
2022-10-08 14:18:25 +02:00
ee7558a9b7
Add a perror() function
2022-10-08 12:42:25 +02:00
8f0b6d80b2
libc: Implement strerror()
2022-10-08 12:29:06 +02:00
71e15e94af
Kernel, libc and userspace: Add basic errno support.
...
Kernel: Add an errno.h header with definitions for each header,
and return those, negated, from syscalls when there is an error.
mmap() returns an invalid address with errno encoded, instead of
returning a negated errno; this address is encoded as ffffffffffffffEE
where EE is errno in hex.
libc: make syscall() return -1 and set errno on error, instead of
returning the raw return value of the system call. Also, add mmap()
and munmap() wrappers in sys/mman.h :).
userspace: make the memeater program show the value of errno
when allocating memory fails.
Things to improve: add perror() and strerror() to make the errno
experience even better! >.<
2022-10-08 12:06:09 +02:00
ad115e9bab
libc: Correct include guards
2022-10-08 11:32:01 +02:00
028a1b1a3c
libc: Enable even more warnings
2022-10-07 18:19:06 +02:00
560b0a1705
libc: Rename the _ folder to bits, as used internally by libraries
2022-10-04 19:11:54 +02:00
48b858af5a
libc: Add strncpy and strncat, and deprecate strcpy and strcat (which, since we're building with -Werror, is an instant ban from using these functions)
2022-10-04 19:08:59 +02:00
a050ed9133
libc: add an internal macros.h header with headers to make attributes less verbose
2022-10-04 19:06:56 +02:00
c6ed8d2abb
libc: remove duplicate declaration of strcpy
2022-10-04 18:59:13 +02:00
cb60e418b2
Add vprintf, (v)sprintf and (v)snprintf to libc + move the non v-printfs to stdio.cpp, since they can now call their v-variants and thus don't depend on internal_printf
2022-10-03 19:59:33 +02:00
34aa953dbc
Add printf() and puts(), quite primitive, looks like hex printing isn't there yet...
2022-10-03 19:00:10 +02:00
dae2ff8d50
Add mmap and munmap syscalls, and thus, add malloc and free to libc!! (yet again, thanks to the wonderful liballoc)
2022-10-02 20:45:04 +02:00
db9e1ba17c
Add a memclr() SSE-optimized function
2022-10-02 19:13:33 +02:00
ae95a528f2
Make function stubs in libc loudly abort instead of silently failing
2022-10-02 18:10:53 +02:00
8e6741ebd6
Rename SYS_version to SYS_getversion
2022-10-02 17:25:56 +02:00
3c6c94adda
Add a proper syscall() function to unistd.h
2022-10-02 17:02:15 +02:00
dc0fd428d3
Syscalls return a value, right?
2022-10-02 10:47:59 +02:00
fcf5923cc0
WIP: Add a C Library, let's try to compile a Hosted GCC cross-compiler using this!
2022-10-01 20:59:22 +02:00
