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https://github.com/jart/cosmopolitan.git
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464858dbb4
This fixes a regression in mmap(MAP_FIXED) on Windows caused by a recent revision. This change also fixes ZipOS so it no longer needs a MAP_FIXED mapping to open files from the PKZIP store. The memory mapping mutex was implemented incorrectly earlier which meant that ftrace and strace could cause cause crashes. This lock and other recursive mutexes are rewritten so that it should be provable that recursive mutexes in cosmopolitan are asynchronous signal safe.
63 lines
1.7 KiB
C
63 lines
1.7 KiB
C
#ifndef COSMOPOLITAN_LIBC_ZIPOS_ZIPOS_H_
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#define COSMOPOLITAN_LIBC_ZIPOS_ZIPOS_H_
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COSMOPOLITAN_C_START_
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#define ZIPOS_PATH_MAX 1024
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#define ZIPOS_SYNTHETIC_DIRECTORY 0
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struct stat;
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struct iovec;
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struct Zipos;
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struct ZiposUri {
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uint32_t len;
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char path[ZIPOS_PATH_MAX];
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};
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struct ZiposHandle {
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struct ZiposHandle *next;
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struct Zipos *zipos;
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size_t size;
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size_t mapsize;
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size_t cfile;
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_Atomic(size_t) refs;
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_Atomic(size_t) pos;
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uint8_t *mem;
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uint8_t data[];
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};
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struct Zipos {
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long pagesz;
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uint8_t *map;
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uint8_t *cdir;
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uint64_t dev;
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size_t *index;
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size_t records;
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};
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int __zipos_close(int);
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void __zipos_drop(struct ZiposHandle *);
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struct ZiposHandle *__zipos_keep(struct ZiposHandle *);
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struct Zipos *__zipos_get(void) pureconst;
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size_t __zipos_normpath(char *, const char *, size_t);
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ssize_t __zipos_find(struct Zipos *, struct ZiposUri *);
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ssize_t __zipos_scan(struct Zipos *, struct ZiposUri *);
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ssize_t __zipos_parseuri(const char *, struct ZiposUri *);
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uint64_t __zipos_inode(struct Zipos *, int64_t, const void *, size_t);
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int __zipos_open(struct ZiposUri *, int);
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void __zipos_postdup(int, int);
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int __zipos_access(struct ZiposUri *, int);
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int __zipos_stat(struct ZiposUri *, struct stat *);
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int __zipos_fstat(struct ZiposHandle *, struct stat *);
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int __zipos_stat_impl(struct Zipos *, size_t, struct stat *);
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ssize_t __zipos_read(struct ZiposHandle *, const struct iovec *, size_t,
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ssize_t);
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int64_t __zipos_seek(struct ZiposHandle *, int64_t, unsigned);
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int __zipos_fcntl(int, int, uintptr_t);
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int __zipos_notat(int, const char *);
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void *__zipos_mmap(void *, uint64_t, int32_t, int32_t, struct ZiposHandle *,
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int64_t);
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COSMOPOLITAN_C_END_
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#endif /* COSMOPOLITAN_LIBC_ZIPOS_ZIPOS_H_ */
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