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Improve ZIP filesystem and change its prefix

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The ZIP filesystem has a breaking change. You now need to use /zip/ to
open() / opendir() / etc. assets within the ZIP structure of your APE
binary, instead of the previous convention of using zip: or zip! URIs.
This is needed because Python likes to use absolute paths, and having
ZIP paths encoded like URIs simply broke too many things.

Many more system calls have been updated to be able to operate on ZIP
files and file descriptors. In particular fcntl() and ioctl() since
Python would do things like ask if a ZIP file is a terminal and get
confused when the old implementation mistakenly said yes, because the
fastest way to guarantee native file descriptors is to dup(2). This
change also improves the async signal safety of zipos and ensures it
doesn't maintain any open file descriptors beyond that which the user
has opened.

This change makes a lot of progress towards adding magic numbers that
are specific to platforms other than Linux. The philosophy here is that,
if you use an operating system like FreeBSD, then you should be able to
take advantage of FreeBSD exclusive features, even if we don't polyfill
them on other platforms. For example, you can now open() a file with the
O_VERIFY flag. If your program runs on other platforms, then Cosmo will
automatically set O_VERIFY to zero. This lets you safely use it without
the need for #ifdef or ifstatements which detract from readability.

One of the blindspots of the ASAN memory hardening we use to offer Rust
like assurances has always been that memory passed to the kernel via
system calls (e.g. writev) can't be checked automatically since the
kernel wasn't built with MODE=asan. This change makes more progress
ensuring that each system call will verify the soundness of memory
before it's passed to the kernel. The code for doing these checks is
fast, particularly for buffers, where it can verify 64 bytes a cycle.

- Correct O_LOOP definition on NT
- Introduce program_executable_name
- Add ASAN guards to more system calls
- Improve termios compatibility with BSDs
- Fix bug in Windows auxiliary value encoding
- Add BSD and XNU specific errnos and open flags
- Add check to ensure build doesn't talk to internet
This commit is contained in:
Justine Tunney 2021-08-22 01:04:18 -07:00
parent 2730c66f4a
commit 00611e9b06
319 changed files with 4418 additions and 2599 deletions
Download patch file Download diff file Expand all files Collapse all files

26
libc/calls/calls.h
View file

@ -56,6 +56,7 @@
#define WIFSTOPPED(s) ((short)((((s)&0xffff) * 0x10001) >> 8) > 0x7f00)
#define WSTOPSIG(s) WEXITSTATUS(s)
#define WTERMSIG(s) ((s)&0x7f)
#define W_STOPCODE(s) ((s) << 8 | 0177)
#if !(__ASSEMBLER__ + __LINKER__ + 0)
COSMOPOLITAN_C_START_
@ -88,34 +89,35 @@ int chown(const char *, uint32_t, uint32_t);
int chroot(const char *);
int close(int);
int closedir(DIR *);
int creat(const char *, uint32_t) nodiscard;
int creat(const char *, uint32_t);
int dirfd(DIR *);
int dup(int) nodiscard;
int dup(int);
int dup2(int, int);
int dup3(int, int, int);
int execl(const char *, const char *, ...) nullterminated();
int execle(const char *, const char *, ...) nullterminated((1));
int execlp(const char *, const char *, ...) nullterminated();
int execv(const char *, char *const[]) paramsnonnull();
int execve(const char *, char *const[], char *const[]) paramsnonnull();
int execvp(const char *, char *const[]) paramsnonnull();
int execvpe(const char *, char *const[], char *const[]) paramsnonnull();
int execv(const char *, char *const[]);
int execve(const char *, char *const[], char *const[]);
int execvp(const char *, char *const[]);
int execvpe(const char *, char *const[], char *const[]);
int faccessat(int, const char *, int, uint32_t);
int fadvise(int, uint64_t, uint64_t, int);
int fchdir(int);
int fchmod(int, uint32_t) nothrow;
int fchmodat(int, const char *, uint32_t, uint32_t);
int fchmodat(int, const char *, uint32_t, int);
int fchown(int, uint32_t, uint32_t);
int fchownat(int, const char *, uint32_t, uint32_t, uint32_t);
int fchownat(int, const char *, uint32_t, uint32_t, int);
int fcntl(int, int, ...);
int fdatasync(int);
int filecmp(const char *, const char *);
int flock(int, int);
int fork(void);
int fstat(int, struct stat *);
int fstatat(int, const char *, struct stat *, uint32_t);
int fstatat(int, const char *, struct stat *, int);
int fsync(int);
int ftruncate(int, int64_t);
int getdents(unsigned, void *, unsigned, long *);
int getdomainname(char *, size_t);
int gethostname(char *, size_t);
int getpgid(int);
@ -127,7 +129,7 @@ int getrusage(int, struct rusage *);
int kill(int, int);
int killpg(int, int);
int link(const char *, const char *) nothrow;
int linkat(int, const char *, int, const char *, uint32_t);
int linkat(int, const char *, int, const char *, int);
int lstat(const char *, struct stat *);
int lutimes(const char *, const struct timeval[2]);
int madvise(void *, uint64_t, int);
@ -244,10 +246,6 @@ int vdprintf(int, const char *, va_list) paramsnonnull();
╚────────────────────────────────────────────────────────────────────────────│*/
#if defined(__GNUC__) && !defined(__STRICT_ANSI__)
#define getcwd(BUF, SIZE) \
(__builtin_constant_p(BUF) && !(BUF) ? get_current_dir_name() \
: getcwd(BUF, SIZE))
void _init_onntconsoleevent(void);
void _init_wincrash(void);