ref: 2ca8e31066e7d67977aacae0980ffa27deaa6f18
parent: 9b2bed733c2189335ee96b5f28f4472ea92628aa
author: cinap_lenrek <cinap_lenrek@felloff.net>
date: Wed Feb 10 00:11:11 EST 2016
removing libgio, this is not golang mveery >:-(
--- a/sys/include/gio.h
+++ /dev/null
@@ -1,24 +1,0 @@
-#pragma lib "libgio.a"
-#pragma src "/sys/src/libgio"
-
-typedef struct ReadWriter ReadWriter;
-
-struct ReadWriter {- RWLock;
- int (*open)(ReadWriter*);
- int (*close)(ReadWriter*);
- long (*pread)(ReadWriter*, void*, long, vlong);
- long (*pwrite)(ReadWriter*, void*, long, vlong);
- void *aux;
- u64int offset;
- u64int length;
-};
-
-ReadWriter* getrdstruct(int);
-int gopen(ReadWriter*, void*);
-int gclose(int);
-long gread(int, void*, long, vlong);
-long gwrite(int, void*, long, vlong);
-vlong gseek(int, vlong, int);
-int fd2gio(int);
-
--- a/sys/man/2/gio
+++ /dev/null
@@ -1,94 +1,0 @@
-.TH GIO 2
-.SH NAME
-gopen, gclose, gseek, gread, gwrite, fd2gio \- Programmable streams
-.SH SYNOPSIS
-.B #include <u.h>
-.br
-.B #include <libc.h>
-.br
-.B #include <gio.h>
-.PP
-.ft L
-.nf
-typedef struct ReadWriter {- RWLock;
- int (*open)(ReadWriter*);
- int (*close)(ReadWriter*);
- long (*pread)(ReadWriter*, void*, long, vlong);
- long (*pwrite)(ReadWriter*, void*, long, vlong);
- void *aux;
- u64int offset;
- u64int length;
-} ReadWriter;
-.fi
-.PP
-.B
-int gopen(ReadWriter *r, void *aux)
-.PP
-.B
-int gclose(int gfd)
-.PP
-.B
-vlong gseek(int gfd, vlong offset, int whence)
-.PP
-.B
-long gread(int gfd, void *buf, long nbytes, vlong offset)
-.PP
-.B
-long gwrite(int gfd, void *buf, long nbytes, vlong offset)
-.PP
-.B
-int fd2gio(int fd)
-.SH DESCRIPTION
-.I gopen
-takes a ReadWriter struct and creates a new instance of a gio fd.
-.I aux
-is an auxillary argument that may or may not be optional depending on how the gio stream is implemented.
-.I gclose
-closes a gio fd and frees any resources allocated to it.
-.I gseek
-changes the fd in a similar way to
-.IR seek (2).
-.I gread
-and
-.I gwrite
-are the gio equivalents to
-.IR pread (2)
-and
-.IR pwrite (2).
-They are functionally equivalent and have nearly the same usage.
-.I fd2gio
-takes a Plan 9 file descriptor and returns a gio descriptor made from that fd.
-.SH SOURCE
-.B /sys/src/libgio
-.SH NOTES
-The gio functions automatically lock the ReadWriter struct in use hopefully making things work better with
-.IR thread (2).
-.SH BUGS
-Things get interesting with
-.IR rfork (2)
-when you disable shared memory.
-.br
-The file descriptor table is poorly implemented.
-.br
-You cannot easily mix gio file descriptors with functions that want Plan 9 ones.
-.br
-
-.SH SEE ALSO
-.IR read (2),
-.IR seek (2),
-.IR open (2)
-.SH DIAGNOSTICS
-By default, no. Users can have their methods set
-.I errstr,
-and
-.I gopen,
-.I gclose,
-.I gread,
-and
-.I gwrite
-will return -2 if a function pointer is nil.
-.SH HISTORY
-First appeared as part of
-.IR ngfs (8)
-in September 2015; imported into 9front February 2016.
--- a/sys/src/libgio/fd.c
+++ /dev/null
@@ -1,59 +1,0 @@
-#include <u.h>
-#include <libc.h>
-#include <gio.h>
-
-int fdopen(ReadWriter*);
-int fdclose(ReadWriter*);
-long fdread(ReadWriter*, void*, long, vlong);
-long fdwrite(ReadWriter*, void*, long, vlong);
-
-ReadWriter fdrdwr = {- .open = fdopen,
- .close = fdclose,
- .pread = fdread,
- .pwrite = fdwrite,
-};
-
-int
-fdopen(ReadWriter *rd)
-{- int *afd = (int*)rd->aux;
-
- rd->offset = 0;
- rd->length = (u64int) seek(*afd, 0, 2);
- seek(*afd, 0, 0);
- return 0;
-}
-
-int
-fdclose(ReadWriter *rd)
-{- void *x = rd->aux;
- free(x);
- return 0;
-}
-
-long
-fdread(ReadWriter *rd, void *bf, long len, vlong offset)
-{- int *afd = (int*)rd->aux;
-
- return pread(*afd, bf, len, offset);
-}
-
-long
-fdwrite(ReadWriter *rd, void *bf, long len, vlong offset)
-{- int *afd = (int*)rd->aux;
-
- return pwrite(*afd, bf, len, offset);
-}
-
-int
-fd2gio(int fd)
-{- void *x = malloc(sizeof(int));
- memcpy(x, &fd, sizeof(int));
- return gopen(&fdrdwr, x);
-}
-
--- a/sys/src/libgio/mkfile
+++ /dev/null
@@ -1,19 +1,0 @@
-</$objtype/mkfile
-
-LIB=/$objtype/lib/libgio.a
-OFILES=\
- fd.$O \
- openclose.$O \
- readp.$O \
- writep.$O \
-
-HFILES=\
- /sys/include/gio.h\
-
-UPDATE=\
- mkfile\
- $HFILES\
- ${OFILES:%.$O=%.c}\- ${LIB:/$objtype/%=/386/%}\-
-</sys/src/cmd/mksyslib
--- a/sys/src/libgio/openclose.c
+++ /dev/null
@@ -1,84 +1,0 @@
-#include <u.h>
-#include <libc.h>
-#include <gio.h>
-
-RWLock giolock;
-ReadWriter *gio_filedes[256];
-uchar gio_filedes_st[256];
-
-int
-getnext(void)
-{- int i;
- for(i = 0; i < 256; i++)
- if(gio_filedes_st[i] == 0)
- break;
- if(i == 256)
- return -1;
- return i;
-}
-
-ReadWriter*
-getrdstruct(int fd)
-{- rlock(&giolock);
- ReadWriter *rval;
- if(gio_filedes_st[fd] != 1)
- rval = nil;
- else
- rval = gio_filedes[fd];
- runlock(&giolock);
- return rval;
-}
-
-int
-gopen(ReadWriter* rd, void *aux)
-{- int pfd;
- ReadWriter *buf;
-
- wlock(&giolock);
- pfd = getnext();
- if(pfd == -1){- wunlock(&giolock);
- return -1;
- }
- buf = malloc(sizeof(ReadWriter));
- if(buf == nil)
- exits("bad malloc");- memcpy(buf, rd, sizeof(ReadWriter));
- buf->aux = aux;
- buf->offset = 0;
- if(buf->open != nil){- if((buf->open(buf)) != 0){- buf->close(buf);
- free(buf);
- wunlock(&giolock);
- return -1;
- }
- }
- gio_filedes[pfd] = buf;
- gio_filedes_st[pfd] = 1;
- wunlock(&giolock);
- return pfd;
-}
-
-int
-gclose(int fd)
-{- ReadWriter *bf;
- int rval = 0;
-
- if(gio_filedes_st[fd] == 0)
- return -1;
- wlock(&giolock);
- bf = gio_filedes[fd];
- if(bf->close != nil)
- rval = bf->close(bf);
- free(bf);
- gio_filedes_st[fd] = 0;
- gio_filedes[fd] = nil;
- wunlock(&giolock);
- return rval;
-}
-
--- a/sys/src/libgio/readp.c
+++ /dev/null
@@ -1,45 +1,0 @@
-#include <u.h>
-#include <libc.h>
-#include <gio.h>
-
-long
-gread(int fd, void *bf, long len, vlong offset)
-{- ReadWriter *rd;
- long rval = 0;
-
- rd = getrdstruct(fd);
- if(rd == nil)
- return -1;
- if(rd->pread == nil)
- return -2;
- rlock(rd);
- rval = rd->pread(rd, bf, offset, len);
- runlock(rd);
- return rval;
-}
-
-vlong
-gseek(int fd, vlong offset, int type)
-{- ReadWriter *rd;
-
- rd = getrdstruct(fd);
- if(rd == nil)
- return -1;
- wlock(rd);
- switch(type){- case 0:
- rd->offset = (u64int)offset;
- break;
- case 1:
- rd->offset = rd->offset + (u64int)offset;
- break;
- case 2:
- rd->offset = rd->length + (u64int)offset;
- break;
- }
- wunlock(rd);
- return rd->offset;
-}
-
--- a/sys/src/libgio/test.c
+++ /dev/null
@@ -1,65 +1,0 @@
-#include <u.h>
-#include <libc.h>
-#include <gio.h>
-
-int topen(ReadWriter*);
-int tclose(ReadWriter*);
-long tread(ReadWriter*, void*, long, vlong);
-long twrite(ReadWriter*, void*, long, vlong);
-
-ReadWriter tester = {- .open = topen,
- .close = tclose,
- .pread = tread,
- .pwrite = twrite,
-};
-
-void
-main(int argc, char *argv[])
-{- int gfd = gopen(&tester, nil);
- if(gfd < 0){- print("gio_test: failed to open gio fd\n");- exits("failure");- }
- char *test1 = "Hello World!\n";
- char test2[256];
-
- gread(gfd, &test2, 256, 23);
- gwrite(gfd, test1, sizeof(test1), 8);
- print("gio_test: %s\n", test2);- gclose(gfd);
- print("gio_test: passed\n");- exits(nil);
-}
-
-int
-topen(ReadWriter *rd)
-{- print("gio_test: topen: file opened!\n");- return 0;
-}
-
-int
-tclose(ReadWriter *rd)
-{- print("gio_test: tclose: file closed!\n");- return 0;
-}
-
-long
-tread(ReadWriter *rd, void *bf, long len, vlong offset)
-{- char *test = "this is a read string!";
- memcpy(bf, test, strlen(test)+1);
- print("gio_test: tread: len = %ud, offset = %ud\n", len, offset);- return len;
-}
-
-long
-twrite(ReadWriter *rd, void *bf, long len, vlong offset)
-{- print("gio_test: twrite: written string: %s\n", bf);- print("gio_test: twrite: len = %ud, offset = %ud\n", len, offset);- return len;
-}
--- a/sys/src/libgio/writep.c
+++ /dev/null
@@ -1,21 +1,0 @@
-#include <u.h>
-#include <libc.h>
-#include <gio.h>
-
-long
-gwrite(int fd, void *buf, long len, vlong offset)
-{- ReadWriter *rd;
- long rval;
-
- rd = getrdstruct(fd);
- if(rd == nil)
- return -1;
- if(rd->pwrite == nil)
- return -2;
- wlock(rd);
- rval = rd->pwrite(rd, buf, len, offset);
- wunlock(rd);
- return rval;
-}
-