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120 lines
4.5 KiB
120 lines
4.5 KiB
#ifndef __pi9_h__
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#define __pi9_h__
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#include <stdio.h>
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#include "pi9_string.h"
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static const uint32_t PI9_NOFID = (uint32_t)~0;
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struct chck_buffer;
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struct pi9_qid {
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uint8_t type;
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uint32_t vers;
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uint64_t path;
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};
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struct pi9_stat {
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uint16_t type;
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uint32_t dev;
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struct pi9_qid qid;
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uint32_t mode;
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uint32_t atime;
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uint32_t mtime;
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uint64_t length;
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struct pi9_string name;
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struct pi9_string uid;
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struct pi9_string gid;
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struct pi9_string muid;
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};
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struct pi9 {
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void *userdata;
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struct chck_buffer *in, *out;
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uint32_t msize;
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struct pi9_procs {
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bool (*auth)(struct pi9 *pi9, uint16_t tag, uint32_t afid, const struct pi9_string *uname, const struct pi9_string *aname, struct pi9_qid **qid);
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bool (*attach)(struct pi9 *pi9, uint16_t tag, uint32_t fid, uint32_t afid, const struct pi9_string *uname, const struct pi9_string *aname, struct pi9_qid **qid);
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bool (*flush)(struct pi9 *pi9, uint16_t tag, uint16_t oldtag);
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bool (*walk)(struct pi9 *pi9, uint16_t tag, uint32_t fid, uint32_t newfid, uint16_t nwname, const struct pi9_string *walks, struct pi9_qid **qids, uint16_t *out_nwqid);
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bool (*open)(struct pi9 *pi9, uint16_t tag, uint32_t fid, uint8_t mode, struct pi9_qid **out_qid, uint32_t *out_iounit);
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bool (*create)(struct pi9 *pi9, uint16_t tag, uint32_t fid, const struct pi9_string *name, uint32_t perm, uint8_t mode, struct pi9_qid **out_qid, uint32_t *out_iounit);
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bool (*read)(struct pi9 *pi9, uint16_t tag, uint32_t fid, uint64_t offset, uint32_t count);
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bool (*write)(struct pi9 *pi9, uint16_t tag, uint32_t fid, uint64_t offset, uint32_t count, const void *data);
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bool (*clunk)(struct pi9 *pi9, uint16_t tag, uint32_t fid);
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bool (*remove)(struct pi9 *pi9, uint16_t tag, uint32_t fid);
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bool (*stat)(struct pi9 *pi9, uint16_t tag, uint32_t fid, struct pi9_stat **out_stat);
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bool (*twstat)(struct pi9 *pi9, uint16_t tag, uint32_t fid, const struct pi9_stat *stat);
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} procs;
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};
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// from libc.h
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enum {
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PI9_OREAD = 0x0000, // open for read
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PI9_OWRITE = 0x0001, // write
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PI9_ORDWR = 0x0002, // read and write
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PI9_OEXEC = 0x0003, // execute, == read but check execute permission
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PI9_OTRUNC = 0x0010, // or'ed in (except for exec), truncate file first
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PI9_OCEXEC = 0x0020, // or'ed in, close on exec
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PI9_ORCLOSE = 0x0040, // or'ed in, remove on close
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PI9_ODIRECT = 0x0080, // or'ed in, direct access
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PI9_ONONBLOCK = 0x0100, // or'ed in, non-blocking call
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PI9_OEXCL = 0x1000, // or'ed in, exclusive use (create only)
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PI9_OLOCK = 0x2000, // or'ed in, lock after opening
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PI9_OAPPEND = 0x4000 // or'ed in, append only
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};
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// bits in pi9_qid.type
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enum {
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PI9_QTDIR = 0x80, // type bit for directories
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PI9_QTAPPEND = 0x40, // type bit for append only files
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PI9_QTEXCL = 0x20, // type bit for exclusive use files
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PI9_QTMOUNT = 0x10, // type bit for mounted channel
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PI9_QTAUTH = 0x08, // type bit for authentication file
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PI9_QTTMP = 0x04, // type bit for non-backed-up file
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PI9_QTSYMLINK = 0x02, // type bit for symbolic link
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PI9_QTFILE = 0x00 // type bits for plain file
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};
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// bits in pi9_stat.mode
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enum {
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PI9_DMEXEC = 0x1, // mode bit for execute permission
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PI9_DMWRITE = 0x2, // mode bit for write permission
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PI9_DMREAD = 0x4, // mode bit for read permission
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PI9_DMDIR = 0x80000000, // mode bit for directories
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PI9_DMAPPEND = 0x40000000, // mode bit for append only files
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PI9_DMEXCL = 0x20000000, // mode bit for exclusive use files
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PI9_DMMOUNT = 0x10000000, // mode bit for mounted channel
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PI9_DMAUTH = 0x08000000, // mode bit for authentication file
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PI9_DMTMP = 0x04000000, // mode bit for non-backed-up file
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};
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enum pi9_error {
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ERR_READ,
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ERR_WRITE,
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ERR_NO_AUTH,
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ERR_NOT_DIRECTORY,
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ERR_NO_FID,
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ERR_FID_IN_USE,
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ERR_NOT_ALLOWED,
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ERR_UNKNOWN_OP,
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ERR_OUT_OF_MEMORY,
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ERR_LAST,
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};
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bool pi9_write_stat(struct pi9_stat *stat, struct chck_buffer *out);
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void pi9_write_error(uint16_t tag, enum pi9_error error, struct chck_buffer *out);
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size_t pi9_write(const void *src, size_t size, size_t nmemb, struct chck_buffer *out);
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void pi9_stat_release(struct pi9_stat *stat);
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bool pi9_process(struct pi9 *pi9, int32_t fd);
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bool pi9_init(struct pi9 *pi9, uint32_t msize, struct pi9_procs *procs, void *userdata);
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void pi9_release(struct pi9 *pi9);
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#define pi9_write_error(t, e, o) \
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{ fprintf(stderr, "%s (%s) @ %u: ", ((strrchr(__FILE__, '/') ?: __FILE__ - 1) + 1), __FUNCTION__, __LINE__); \
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pi9_write_error(t, e, o); }
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#endif /* __pi9_h__ */
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