e1e86ab889
libc: Add support for EEXIST, ENOTDIR, ENOSPC, ENOTSUP and EPIPE to strerror()
2022-10-16 17:24:58 +02:00
d2e2883a79
Kernel: Make mkdir() accessible to userspace
2022-10-16 17:22:12 +02:00
42b6b927c9
libc: Implement strlcpy(), and make strncpy() standard-compliant
2022-10-15 17:24:22 +02:00
48f38bdcef
libc: More inttypes.h
2022-10-15 16:53:26 +02:00
45afd3e243
Replace the rand() which reads from /dev/random with a Mersenne PRNG.
...
Much better now.
Also, it is seeded by reading from /dev/random at startup. Not sure if that's the best idea, but we'll see.
2022-10-15 16:46:54 +02:00
18f1f8b7ca
Add VERY HACKY rand() implementation.
2022-10-15 16:31:08 +02:00
dd358eca29
libc/libgen.cpp: Remove #include <luna.h>
...
This header was included for the NOT_IMPLEMENTED macro.
Now it is implemented.
2022-10-15 16:09:54 +02:00
116e7326a4
libc: Implement dirname() and basename()
2022-10-15 16:08:27 +02:00
5256166e7a
libc: Fix strrchr
2022-10-15 16:06:41 +02:00
6953a28ce8
libc: Implement strrchr()
2022-10-15 15:16:19 +02:00
f13c48b562
libc: make strerror() return "Unknown error" instead of an invalid pointer
2022-10-15 15:14:30 +02:00
7139b4403f
libc: Add EPIPE (not returned by anything yet)
2022-10-15 15:14:02 +02:00
e3e33bacbc
libc: Add stubbed signal.h header
2022-10-15 15:13:38 +02:00
8d552b1522
libc: Add setjmp.h stub functions (not implemented)
2022-10-15 15:13:25 +02:00
46f60b192a
libc: Add libgen.h stub functions (not implemented)
2022-10-15 15:13:10 +02:00
9aa96de61d
libc: Start implementing inttypes.h
2022-10-15 15:12:53 +02:00
6507146c60
libc: Add Luna-specific limits
2022-10-15 14:31:55 +02:00
f50017912d
libc: Implement atoi(), atol() and atoll()
2022-10-15 14:02:24 +02:00
2395c7a871
libc: Implement _Exit
...
Exactly the same as _exit, but in stdlib.h instead of unistd.h
2022-10-15 14:02:10 +02:00
b1739f7f0d
libc: Add support for the new clock() system call
2022-10-15 13:21:22 +02:00
3a9dddaa57
Kernel, libc: Remove the rand() system call
...
That's why we now have a VFS and a /dev pseudo-filesystem. To provide that kind of things.
Remember, everything is a file!!
The new way to ask the kernel for random numbers is to read from /dev/random.
2022-10-15 13:04:48 +02:00
225284a6ca
libc: Add support for mprotect()
2022-10-15 12:59:13 +02:00
613f8170b6
Kernel, libc: Implement mprotect() and use proper PROT_* values
2022-10-15 12:57:14 +02:00
a002e75725
libc: Add strstr()
2022-10-15 12:33:36 +02:00
3fde7e46f5
libc: Add strcmp() and strncmp()
2022-10-15 12:30:49 +02:00
3e2a4276e9
libc: Add memcmp() and memmove()
...
Those were there since forever in the kernel, but they haven't been added to libc until now.
2022-10-15 12:23:37 +02:00
94a6336e4d
libc: add memchr(), strnlen(), strdup(), and rename memclr() to bzero()
2022-10-15 12:18:37 +02:00
523e88e5a9
libc: Add sched_yield()
2022-10-15 11:43:13 +02:00
b0e071e964
libc: Make functions with no arguments be defined as type function(void)
...
Instead of type function().
2022-10-15 11:39:13 +02:00
3e2bebf0aa
libc: Alias __lc_unreachable to __builtin_unreachable
2022-10-15 11:20:20 +02:00
1e86acd4c0
libc: Implement fcntl(F_DUPFD) and dup()
2022-10-15 11:16:34 +02:00
c77e752a82
libc: Implement fileno()
2022-10-15 10:28:52 +02:00
d0d6557e99
libc: Add assert()
2022-10-15 10:05:48 +02:00
8398b2e2e4
libc: Change bits/macros.h to use a __lc_ prefix for internal macros
...
That way, we don't pollute user programs with our own 'noreturn' and 'deprecated' macros
2022-10-15 09:52:37 +02:00
1043b0772d
Make libc exit with a specific code if program initialization fails
...
Now you know, if a program exits with code -127 it's libc's fault :)
2022-10-14 21:26:46 +02:00
d5bc87099f
libc: #define STDOUT_FILENO and STDERR_FILENO
...
Still missing stdin >.<
2022-10-14 21:24:18 +02:00
eb67ab113e
libc: Add ctype.h
2022-10-14 21:12:26 +02:00
ccf8f404a8
libc: Make the stdio initialization code cleaner
2022-10-14 19:36:20 +02:00
4e08c9d8ce
libc: Pass the last argument in __luna_syscall5 correctly
2022-10-14 19:24:58 +02:00
0e64c57e10
libc: Change __{stderr, stdout} to {stderr, stdout}
2022-10-14 19:23:14 +02:00
3b83d7ccaf
libc: Implement fsetpos() and fgetpos()
...
Not much to do, since these are kind of equivalent to fseek() and ftell().
2022-10-14 19:12:40 +02:00
743aedcd49
libc: Implement atexit() and _exit()
...
exit() now calls registered handlers before calling _exit().
And initialize_libc() can now register a handler to close stdout and stderr on program termination!! :)
2022-10-12 20:41:55 +02:00
be9026442e
libc: Check for file descriptors 0 and 1, and if they exist do not close and reopen them
2022-10-12 20:19:45 +02:00
de6041fede
libc: Add fdopen()
2022-10-12 20:19:13 +02:00
5f8376409d
Kernel, libc: Implement EFAULT
2022-10-12 19:25:35 +02:00
4091799701
Kernel, libc: Add ENOEXEC (Exec format error)
2022-10-12 19:15:44 +02:00
531afc3d6f
libc: Add support for the new exec() system call
...
execv() is a temporary wrapper that ignores the second parameter, while execve() and execvp() still error out.
2022-10-12 17:45:58 +02:00
34c35163e4
libc: use the normal names that everybody uses for stdout and stderr
2022-10-12 17:15:57 +02:00
dfdc3b2d11
libc: close fds 0 and 1 before opening stdout and stderr
2022-10-12 17:14:49 +02:00
edda41a7bb
libc: Implement fseek(), ftell() and rewind()
...
All three use the new syscall seek() (with its lseek() wrapper in unistd.h)!!
2022-10-12 15:56:03 +02:00
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
a3362429d3
libc: Update strerror()
2022-10-12 12:01:18 +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
c8c4d31cca
Add a FIXME to string.cpp
2022-10-12 11:20:48 +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
c30041b733
fix naming
2022-10-11 21:17:07 +02:00
88a01fcfc7
libc: make perror output to stderr
2022-10-11 21:13:38 +02:00
b67011c626
libc: Use the new write() syscall
...
The new one is write(fd, buf, count).
The old one was write(buf, count).
So the old one tries to pass buf as a file descriptor, and write() complains that 4000000 is too large of a file descriptor and throws EBADF.
We now use the new syscall, through the wrapper that fwrite() provides us.
2022-10-11 21:12:19 +02:00
0f47f59364
libc: make fprintf actually write to the chosen file
...
Also, printf now is kind of an alias for fprintf(stdout,...), as it should be.
2022-10-11 21:10:19 +02:00
2f46e46aa4
libc: Implement fwrite()
...
Now that we have the write() syscall and libc wrapper, fwrite can finally be implemented.
2022-10-11 21:09:30 +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
feb8c1c31b
libc: Implement strchr()
2022-10-11 19:50:18 +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
4f2b3ce5d1
fclose: restore errno after call to free() if close() fails
2022-10-10 21:18:24 +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
49c7900407
Add %m to userspace printf
...
%m as a format specifier is a nonstandard glibc extension, but I like it so I'm implementing it.
What it does is print the value of strerror(errno), without consuming any arguments to printf().
2022-10-08 18:44:14 +02:00
3ee1f34bc4
Forgot to add break :)
...
And that, is why you test before pushing and commiting >.<
2022-10-08 18:08:50 +02:00
c67079dd74
Kernel, libc: Implement %p in *printf()
...
So we can avoid writing (unsigned long)ptr or (uint64_t)ptr everywhere when wanting to print a pointer.
2022-10-08 18:07:33 +02:00
f83a6ace51
Kernel, libc: Add support for providing a status code to exit()
...
The exit() libc function already accepted an integer, but didn't pass it on to the kernel since we had no mechanism for it to do that.
Now, the kernel stores a task's exit status to display it later (and in the future, return it to userspace via wait()/waitpid())
2022-10-08 17:56:40 +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
ac72d64490
Make (v)fprintf alias to (v)printf instead of throwing an error
...
We don't have files :) (yet)
But if someone wants to fprintf(stderr), then fine. Do it. Except it won't be any different from fprintf(stdout) or printf().
2022-10-08 13:45:57 +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
952d8fa294
Be more strict with warnings
2022-10-05 17:34:22 +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
885e39f60f
libc: fix printf to actually print correct more-than-one-digit numbers (hint: the bugfix was a very stupid one)
2022-10-03 20:30:12 +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
9420484c9b
Do not use __builtin_alloca in puts (could overflow the stack for large strings)
2022-10-03 19:05:04 +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
1ecd24f5d6
Kernel: Add SSE support (enable SSE on boot and save context (user tasks only) on task switch)
2022-10-02 18:53:54 +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
6bacded5cf
Update build system
2022-10-02 17:01:30 +02:00
f8a72f15c8
Adjust build system to be more flexible and to work with the new toolchain
2022-10-02 12:44:32 +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
