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
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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()
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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
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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
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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
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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
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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()
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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
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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()
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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
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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}
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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
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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
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%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()
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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()
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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
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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
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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
