python-torch: add shm_{open,unlink} to ATen

packages/python-torch/0003-impl-posix-shm.patch

@@ -66,3 +66,77 @@ diff -uNr pytorch-v1.12.1/torch/lib/libshm/manager.cpp pytorch-v1.12.1.mod/torch
 +
  struct ClientSession {
    ClientSession(ManagerSocket s) : socket(std::move(s)), pid(0) {}
+
+diff -uNr a/aten/src/ATen/MapAllocator.cpp b/aten/src/ATen/MapAllocator.cpp
+--- a/aten/src/ATen/MapAllocator.cpp	2023-04-28 19:28:54.000000000 +0900
++++ b/aten/src/ATen/MapAllocator.cpp	2023-04-28 19:30:12.000000000 +0900
+@@ -29,6 +29,69 @@
+ #include <c10/util/win32-headers.h>
+ #endif
+ 
++#define HAVE_SHM_OPEN 1
++#define HAVE_SHM_UNLINK 1
++
++static int shm_unlink(const char *name) {
++    size_t namelen;
++    char *fname;
++
++    /* Construct the filename.  */
++    while (name[0] == '/') ++name;
++
++    if (name[0] == '\0') {
++        /* The name "/" is not supported.  */
++        errno = EINVAL;
++        return -1;
++    }
++
++    namelen = strlen(name);
++    fname = (char *) alloca(sizeof("@TERMUX_PREFIX@/tmp/") - 1 + namelen + 1);
++    memcpy(fname, "@TERMUX_PREFIX@/tmp/", sizeof("@TERMUX_PREFIX@/tmp/") - 1);
++    memcpy(fname + sizeof("@TERMUX_PREFIX@/tmp/") - 1, name, namelen + 1);
++
++    return unlink(fname);
++}
++
++static int shm_open(const char *name, int oflag, mode_t mode) {
++    size_t namelen;
++    char *fname;
++    int fd;
++
++    /* Construct the filename.  */
++    while (name[0] == '/') ++name;
++
++    if (name[0] == '\0') {
++        /* The name "/" is not supported.  */
++        errno = EINVAL;
++        return -1;
++    }
++
++    namelen = strlen(name);
++    fname = (char *) alloca(sizeof("@TERMUX_PREFIX@/tmp/") - 1 + namelen + 1);
++    memcpy(fname, "@TERMUX_PREFIX@/tmp/", sizeof("@TERMUX_PREFIX@/tmp/") - 1);
++    memcpy(fname + sizeof("@TERMUX_PREFIX@/tmp/") - 1, name, namelen + 1);
++
++    fd = open(fname, oflag, mode);
++    if (fd != -1) {
++        /* We got a descriptor.  Now set the FD_CLOEXEC bit.  */
++        int flags = fcntl(fd, F_GETFD, 0);
++        flags |= FD_CLOEXEC;
++        flags = fcntl(fd, F_SETFD, flags);
++
++        if (flags == -1) {
++            /* Something went wrong.  We cannot return the descriptor.  */
++            int save_errno = errno;
++            close(fd);
++            fd = -1;
++            errno = save_errno;
++        }
++    }
++
++    return fd;
++}
++
++
+ namespace at {
+ 
+ static constexpr int64_t map_alloc_alignment = 64;

packages/python-torch/build.sh

@@ -3,7 +3,7 @@ TERMUX_PKG_DESCRIPTION="Tensors and Dynamic neural networks in Python"
 TERMUX_PKG_LICENSE="BSD 3-Clause"
 TERMUX_PKG_MAINTAINER="@termux"
 TERMUX_PKG_VERSION=2.0.0
-TERMUX_PKG_REVISION=1
+TERMUX_PKG_REVISION=2
 TERMUX_PKG_SRCURL=git+https://github.com/pytorch/pytorch
 TERMUX_PKG_DEPENDS="ffmpeg, libc++, libopenblas, libprotobuf, libzmq, opencv, python, python-numpy, python-pip"
 TERMUX_PKG_HOSTBUILD=true