2020-06-15 14:18:57 +00:00
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#ifndef COSMOPOLITAN_LIBC_ZIPOS_ZIPOS_H_
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#define COSMOPOLITAN_LIBC_ZIPOS_ZIPOS_H_
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2021-08-12 07:42:14 +00:00
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#include "libc/calls/calls.h"
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2022-06-15 23:19:50 +00:00
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#include "libc/intrin/nopl.h"
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#include "libc/nexgen32e/threaded.h"
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2020-06-15 14:18:57 +00:00
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#if !(__ASSEMBLER__ + __LINKER__ + 0)
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COSMOPOLITAN_C_START_
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struct stat;
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struct iovec;
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struct ZiposUri {
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const char *path;
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size_t len;
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};
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struct ZiposHandle {
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2022-06-15 23:19:50 +00:00
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struct ZiposHandle *next;
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size_t size; /* byte length of `mem` */
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size_t mapsize; /* total size of this struct */
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2020-06-15 14:18:57 +00:00
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size_t pos; /* read/write byte offset state */
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uint32_t cfile; /* central directory entry rva */
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2022-06-15 23:19:50 +00:00
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uint8_t *mem; /* points to inflated data or uncompressed image */
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uint8_t data[]; /* uncompressed file memory */
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2020-06-15 14:18:57 +00:00
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};
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2022-06-15 23:19:50 +00:00
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struct Zipos {
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uint8_t *map;
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uint8_t *cdir;
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struct ZiposHandle *freelist;
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};
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void __zipos_lock(void) hidden;
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void __zipos_unlock(void) hidden;
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2020-11-28 20:01:51 +00:00
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int __zipos_close(int) hidden;
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2021-08-12 07:42:14 +00:00
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struct Zipos *__zipos_get(void) pureconst hidden;
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void __zipos_free(struct Zipos *, struct ZiposHandle *) hidden;
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2020-11-28 20:01:51 +00:00
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ssize_t __zipos_parseuri(const char *, struct ZiposUri *) hidden;
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2020-08-25 11:23:25 +00:00
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ssize_t __zipos_find(struct Zipos *, const struct ZiposUri *);
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2020-11-28 20:01:51 +00:00
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int __zipos_open(const struct ZiposUri *, unsigned, int) hidden;
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int __zipos_stat(const struct ZiposUri *, struct stat *) hidden;
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int __zipos_fstat(const struct ZiposHandle *, struct stat *) hidden;
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int __zipos_stat_impl(struct Zipos *, size_t, struct stat *) hidden;
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2020-06-15 14:18:57 +00:00
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ssize_t __zipos_read(struct ZiposHandle *, const struct iovec *, size_t,
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2020-11-28 20:01:51 +00:00
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ssize_t) hidden;
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2020-06-15 14:18:57 +00:00
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ssize_t __zipos_write(struct ZiposHandle *, const struct iovec *, size_t,
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2020-11-28 20:01:51 +00:00
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ssize_t) hidden;
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2021-06-24 19:31:26 +00:00
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int64_t __zipos_lseek(struct ZiposHandle *, int64_t, unsigned) hidden;
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Improve ZIP filesystem and change its prefix
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
2021-08-22 08:04:18 +00:00
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int __zipos_fcntl(int, int, uintptr_t) hidden;
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int __zipos_notat(int, const char *) hidden;
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2020-06-15 14:18:57 +00:00
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2022-06-26 09:58:36 +00:00
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#ifdef _NOPL0
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#define __zipos_lock() _NOPL0("__threadcalls", __zipos_lock)
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#define __zipos_unlock() _NOPL0("__threadcalls", __zipos_unlock)
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#else
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#define __zipos_lock() (__threaded ? __zipos_lock() : 0)
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#define __zipos_unlock() (__threaded ? __zipos_unlock() : 0)
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#endif
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2020-06-15 14:18:57 +00:00
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COSMOPOLITAN_C_END_
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#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
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#endif /* COSMOPOLITAN_LIBC_ZIPOS_ZIPOS_H_ */
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