libgo: fix building, and some testing, on Solaris
Restore some of the fixes that were applied to golang_org/x/net/lif but were lost when 1.12 moved the directory to internal/x/net/lif. Add support for reading /proc to fetch argc/argv/env for c-archive mode. Reviewed-on: https://go-review.googlesource.com/c/158640 From-SVN: r268130
This commit is contained in:
parent
a9647bf912
commit
ea31c98dab
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@ -1,4 +1,4 @@
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e7427654f3af83e1feea727a62a97172d7721403
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0c870ba6b3b43e0e56231f40c56b58dad0e36d9e
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The first line of this file holds the git revision number of the last
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merge done from the gofrontend repository.
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@ -1082,7 +1082,7 @@ $(eval $(call PACKAGE_template,internal/x/net/lif))
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internal_x_net_lif_lo = \
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internal/x/net/lif.lo
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internal_x_net_lif_check = \
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internal_org/x/net/lif/check
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internal/x/net/lif/check
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endif
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@ -1131,7 +1131,7 @@ extra_check_libs_cmd_vet_internal_cfg = $(abs_builddir)/libgotool.a
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@LIBGO_IS_SOLARIS_TRUE@ internal/x/net/lif.lo
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@LIBGO_IS_SOLARIS_TRUE@internal_x_net_lif_check = \
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@LIBGO_IS_SOLARIS_TRUE@ internal_org/x/net/lif/check
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@LIBGO_IS_SOLARIS_TRUE@ internal/x/net/lif/check
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TPACKAGES = $(shell cat $(srcdir)/check-packages.txt)
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TEST_PACKAGES = $(addsuffix /check,$(TPACKAGES)) \
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@ -11,18 +11,12 @@ import (
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"unsafe"
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)
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//go:cgo_import_dynamic libc_ioctl ioctl "libc.so"
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//go:linkname procIoctl libc_ioctl
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var procIoctl uintptr
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func sysvicall6(trap, nargs, a1, a2, a3, a4, a5, a6 uintptr) (uintptr, uintptr, syscall.Errno)
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//extern __go_ioctl_ptr
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func libc_ioctl(int32, int32, unsafe.Pointer) int32
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func ioctl(s, ioc uintptr, arg unsafe.Pointer) error {
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_, _, errno := sysvicall6(uintptr(unsafe.Pointer(&procIoctl)), 3, s, ioc, uintptr(arg), 0, 0, 0)
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if errno != 0 {
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return error(errno)
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if libc_ioctl(int32(s), int32(ioc), arg) < 0 {
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return syscall.GetErrno()
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}
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return nil
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}
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@ -3,6 +3,8 @@
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package lif
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import "unsafe"
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const (
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sysAF_UNSPEC = 0x0
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sysAF_INET = 0x2
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@ -67,7 +69,6 @@ const (
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type lifnum struct {
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Family uint16
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Pad_cgo_0 [2]byte
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Flags int32
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Count int32
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}
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@ -81,16 +82,13 @@ type lifreq struct {
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type lifconf struct {
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Family uint16
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Pad_cgo_0 [2]byte
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Flags int32
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Len int32
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Pad_cgo_1 [4]byte
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Lifcu [8]byte
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Lifcu [unsafe.Sizeof(unsafe.Pointer(nil))]byte
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}
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type lifIfinfoReq struct {
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Maxhops uint8
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Pad_cgo_0 [3]byte
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Reachtime uint32
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Reachretrans uint32
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Maxmtu uint32
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@ -441,7 +441,10 @@ func raisebadsignal(sig uint32, c *sigctxt) {
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//
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// On FreeBSD, the libthr sigaction code prevents
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// this from working so we fall through to raise.
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if GOOS != "freebsd" && (isarchive || islibrary) && handler == _SIG_DFL && c.sigcode() != _SI_USER {
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//
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// The argument above doesn't hold for SIGPIPE, which won't
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// necessarily be re-raised if we return.
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if GOOS != "freebsd" && (isarchive || islibrary) && handler == _SIG_DFL && c.sigcode() != _SI_USER && sig != _SIGPIPE {
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return
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}
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@ -11,11 +11,129 @@
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#include <stdlib.h>
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#include <time.h>
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#include <unistd.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include "runtime.h"
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#include "array.h"
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#include "arch.h"
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#if defined(__sun) && defined(__SVR4)
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/* Read a file into memory on Solaris, returning an malloc'ed buffer
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and setting *SIZE to its size. */
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static char *
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read_file (const char *fn, size_t *size)
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{
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struct stat st;
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char *buf;
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int o;
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ssize_t got;
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if (stat (fn, &st) < 0)
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return NULL;
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buf = malloc ((size_t) st.st_size);
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if (buf == NULL)
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return NULL;
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o = open (fn, O_RDONLY);
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if (o < 0)
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{
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free (buf);
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return NULL;
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}
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got = read (o, buf, st.st_size);
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close (o);
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if (got != st.st_size)
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{
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free (buf);
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return NULL;
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}
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*size = (size_t) got;
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return buf;
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}
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/* On Solaris we don't get passed argc/argv, but we can fetch it from
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/proc/PID/cmdline. */
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static void
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read_cmdline (int *argc, char ***argv)
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{
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pid_t pid;
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char fn[50];
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char *argbuf;
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size_t argsize;
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char *envbuf;
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size_t envsize;
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char *p;
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int i;
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int ac;
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*argc = 0;
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*argv = NULL;
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pid = getpid ();
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snprintf (fn, sizeof fn, "/proc/%ld/cmdline", (long) pid);
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argbuf = read_file (fn, &argsize);
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if (argbuf == NULL)
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return;
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snprintf (fn, sizeof fn, "/proc/%ld/environ", (long) pid);
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envbuf = read_file (fn, &envsize);
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if (envbuf == NULL)
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{
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free (argbuf);
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return;
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}
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i = 0;
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for (p = argbuf; p < argbuf + argsize; p++)
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if (*p == '\0')
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++i;
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ac = i;
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++i; // For trailing NULL.
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for (p = envbuf; p < envbuf + envsize; p++)
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if (*p == '\0')
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++i;
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++i; // For trailing NULL.
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*argv = (char **) malloc (i * sizeof (char *));
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if (*argv == NULL)
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{
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free (argbuf);
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free (envbuf);
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return;
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}
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*argc = ac;
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(*argv)[0] = argbuf;
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i = 0;
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for (p = argbuf; p < argbuf + argsize; p++)
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{
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if (*p == '\0')
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{
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++i;
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(*argv)[i] = p + 1;
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}
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}
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(*argv)[i] = NULL;
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++i;
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(*argv)[i] = envbuf;
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for (p = envbuf; p < envbuf + envsize; p++)
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{
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if (*p == '\0')
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{
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++i;
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(*argv)[i] = p + 1;
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}
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}
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(*argv)[i] = NULL;
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}
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#endif /* defined(__sun) && defined(__SVR4) */
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/* This is used when building a standalone Go library using the Go
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command's -buildmode=c-archive or -buildmode=c-shared option. It
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starts up the Go code as a global constructor but does not take any
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@ -64,6 +182,10 @@ __go_init (int argc, char **argv, char** env __attribute__ ((unused)))
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struct args *a;
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pthread_t tid;
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#if defined(__sun) && defined(__SVR4)
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read_cmdline (&argc, &argv);
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#endif
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runtime_isarchive = true;
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setIsCgo ();
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