From 9b97598cc8b30fcefb5099cb0950009b3e16fb9e Mon Sep 17 00:00:00 2001 From: Luke Shumaker Date: Thu, 28 Jul 2016 00:37:09 -0400 Subject: ./move.sh --- src/grp-import/systemd-import/Makefile | 52 +++ src/grp-import/systemd-import/import-common.c | 225 +++++++++++ src/grp-import/systemd-import/import-common.h | 26 ++ src/grp-import/systemd-import/import-compress.c | 469 +++++++++++++++++++++++ src/grp-import/systemd-import/import-compress.h | 61 +++ src/grp-import/systemd-import/import-pubring.gpg | Bin 0 -> 9551 bytes src/grp-import/systemd-import/import-raw.c | 467 ++++++++++++++++++++++ src/grp-import/systemd-import/import-raw.h | 36 ++ src/grp-import/systemd-import/import-tar.c | 388 +++++++++++++++++++ src/grp-import/systemd-import/import-tar.h | 36 ++ src/grp-import/systemd-import/import.c | 337 ++++++++++++++++ 11 files changed, 2097 insertions(+) create mode 100644 src/grp-import/systemd-import/Makefile create mode 100644 src/grp-import/systemd-import/import-common.c create mode 100644 src/grp-import/systemd-import/import-common.h create mode 100644 src/grp-import/systemd-import/import-compress.c create mode 100644 src/grp-import/systemd-import/import-compress.h create mode 100644 src/grp-import/systemd-import/import-pubring.gpg create mode 100644 src/grp-import/systemd-import/import-raw.c create mode 100644 src/grp-import/systemd-import/import-raw.h create mode 100644 src/grp-import/systemd-import/import-tar.c create mode 100644 src/grp-import/systemd-import/import-tar.h create mode 100644 src/grp-import/systemd-import/import.c (limited to 'src/grp-import/systemd-import') diff --git a/src/grp-import/systemd-import/Makefile b/src/grp-import/systemd-import/Makefile new file mode 100644 index 0000000000..301556ffd5 --- /dev/null +++ b/src/grp-import/systemd-import/Makefile @@ -0,0 +1,52 @@ +# -*- Mode: makefile; indent-tabs-mode: t -*- +# +# This file is part of systemd. +# +# Copyright 2010-2012 Lennart Poettering +# Copyright 2010-2012 Kay Sievers +# Copyright 2013 Zbigniew Jędrzejewski-Szmek +# Copyright 2013 David Strauss +# Copyright 2016 Luke Shumaker +# +# systemd is free software; you can redistribute it and/or modify it +# under the terms of the GNU Lesser General Public License as published by +# the Free Software Foundation; either version 2.1 of the License, or +# (at your option) any later version. +# +# systemd is distributed in the hope that it will be useful, but +# WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +# Lesser General Public License for more details. +# +# You should have received a copy of the GNU Lesser General Public License +# along with systemd; If not, see . +include $(dir $(lastword $(MAKEFILE_LIST)))/../../../config.mk +include $(topsrcdir)/build-aux/Makefile.head.mk + +rootlibexec_PROGRAMS += systemd-import +systemd_import_SOURCES = \ + src/import/import.c \ + src/import/import-raw.c \ + src/import/import-raw.h \ + src/import/import-tar.c \ + src/import/import-tar.h \ + src/import/import-common.c \ + src/import/import-common.h \ + src/import/import-compress.c \ + src/import/import-compress.h \ + src/import/qcow2-util.c \ + src/import/qcow2-util.h + +systemd_import_CFLAGS = \ + $(AM_CFLAGS) \ + $(XZ_CFLAGS) \ + $(ZLIB_CFLAGS) \ + $(BZIP2_CFLAGS) + +systemd_import_LDADD = \ + libshared.la \ + $(XZ_LIBS) \ + $(ZLIB_LIBS) \ + $(BZIP2_LIBS) + +include $(topsrcdir)/build-aux/Makefile.tail.mk diff --git a/src/grp-import/systemd-import/import-common.c b/src/grp-import/systemd-import/import-common.c new file mode 100644 index 0000000000..287a3382a1 --- /dev/null +++ b/src/grp-import/systemd-import/import-common.c @@ -0,0 +1,225 @@ +/*** + This file is part of systemd. + + Copyright 2015 Lennart Poettering + + systemd is free software; you can redistribute it and/or modify it + under the terms of the GNU Lesser General Public License as published by + the Free Software Foundation; either version 2.1 of the License, or + (at your option) any later version. + + systemd is distributed in the hope that it will be useful, but + WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public License + along with systemd; If not, see . +***/ + +#include +#include +#include +#include + +#include "btrfs-util.h" +#include "capability-util.h" +#include "fd-util.h" +#include "import-common.h" +#include "signal-util.h" +#include "util.h" + +int import_make_read_only_fd(int fd) { + int r; + + assert(fd >= 0); + + /* First, let's make this a read-only subvolume if it refers + * to a subvolume */ + r = btrfs_subvol_set_read_only_fd(fd, true); + if (r == -ENOTTY || r == -ENOTDIR || r == -EINVAL) { + struct stat st; + + /* This doesn't refer to a subvolume, or the file + * system isn't even btrfs. In that, case fall back to + * chmod()ing */ + + r = fstat(fd, &st); + if (r < 0) + return log_error_errno(errno, "Failed to stat temporary image: %m"); + + /* Drop "w" flag */ + if (fchmod(fd, st.st_mode & 07555) < 0) + return log_error_errno(errno, "Failed to chmod() final image: %m"); + + return 0; + + } else if (r < 0) + return log_error_errno(r, "Failed to make subvolume read-only: %m"); + + return 0; +} + +int import_make_read_only(const char *path) { + _cleanup_close_ int fd = 1; + + fd = open(path, O_RDONLY|O_NOCTTY|O_CLOEXEC); + if (fd < 0) + return log_error_errno(errno, "Failed to open %s: %m", path); + + return import_make_read_only_fd(fd); +} + +int import_fork_tar_x(const char *path, pid_t *ret) { + _cleanup_close_pair_ int pipefd[2] = { -1, -1 }; + pid_t pid; + int r; + + assert(path); + assert(ret); + + if (pipe2(pipefd, O_CLOEXEC) < 0) + return log_error_errno(errno, "Failed to create pipe for tar: %m"); + + pid = fork(); + if (pid < 0) + return log_error_errno(errno, "Failed to fork off tar: %m"); + + if (pid == 0) { + int null_fd; + uint64_t retain = + (1ULL << CAP_CHOWN) | + (1ULL << CAP_FOWNER) | + (1ULL << CAP_FSETID) | + (1ULL << CAP_MKNOD) | + (1ULL << CAP_SETFCAP) | + (1ULL << CAP_DAC_OVERRIDE); + + /* Child */ + + (void) reset_all_signal_handlers(); + (void) reset_signal_mask(); + assert_se(prctl(PR_SET_PDEATHSIG, SIGTERM) == 0); + + pipefd[1] = safe_close(pipefd[1]); + + if (dup2(pipefd[0], STDIN_FILENO) != STDIN_FILENO) { + log_error_errno(errno, "Failed to dup2() fd: %m"); + _exit(EXIT_FAILURE); + } + + if (pipefd[0] != STDIN_FILENO) + pipefd[0] = safe_close(pipefd[0]); + + null_fd = open("/dev/null", O_WRONLY|O_NOCTTY); + if (null_fd < 0) { + log_error_errno(errno, "Failed to open /dev/null: %m"); + _exit(EXIT_FAILURE); + } + + if (dup2(null_fd, STDOUT_FILENO) != STDOUT_FILENO) { + log_error_errno(errno, "Failed to dup2() fd: %m"); + _exit(EXIT_FAILURE); + } + + if (null_fd != STDOUT_FILENO) + null_fd = safe_close(null_fd); + + fd_cloexec(STDIN_FILENO, false); + fd_cloexec(STDOUT_FILENO, false); + fd_cloexec(STDERR_FILENO, false); + + if (unshare(CLONE_NEWNET) < 0) + log_error_errno(errno, "Failed to lock tar into network namespace, ignoring: %m"); + + r = capability_bounding_set_drop(retain, true); + if (r < 0) + log_error_errno(r, "Failed to drop capabilities, ignoring: %m"); + + execlp("tar", "tar", "--numeric-owner", "-C", path, "-px", "--xattrs", "--xattrs-include=*", NULL); + log_error_errno(errno, "Failed to execute tar: %m"); + _exit(EXIT_FAILURE); + } + + pipefd[0] = safe_close(pipefd[0]); + r = pipefd[1]; + pipefd[1] = -1; + + *ret = pid; + + return r; +} + +int import_fork_tar_c(const char *path, pid_t *ret) { + _cleanup_close_pair_ int pipefd[2] = { -1, -1 }; + pid_t pid; + int r; + + assert(path); + assert(ret); + + if (pipe2(pipefd, O_CLOEXEC) < 0) + return log_error_errno(errno, "Failed to create pipe for tar: %m"); + + pid = fork(); + if (pid < 0) + return log_error_errno(errno, "Failed to fork off tar: %m"); + + if (pid == 0) { + int null_fd; + uint64_t retain = (1ULL << CAP_DAC_OVERRIDE); + + /* Child */ + + (void) reset_all_signal_handlers(); + (void) reset_signal_mask(); + assert_se(prctl(PR_SET_PDEATHSIG, SIGTERM) == 0); + + pipefd[0] = safe_close(pipefd[0]); + + if (dup2(pipefd[1], STDOUT_FILENO) != STDOUT_FILENO) { + log_error_errno(errno, "Failed to dup2() fd: %m"); + _exit(EXIT_FAILURE); + } + + if (pipefd[1] != STDOUT_FILENO) + pipefd[1] = safe_close(pipefd[1]); + + null_fd = open("/dev/null", O_RDONLY|O_NOCTTY); + if (null_fd < 0) { + log_error_errno(errno, "Failed to open /dev/null: %m"); + _exit(EXIT_FAILURE); + } + + if (dup2(null_fd, STDIN_FILENO) != STDIN_FILENO) { + log_error_errno(errno, "Failed to dup2() fd: %m"); + _exit(EXIT_FAILURE); + } + + if (null_fd != STDIN_FILENO) + null_fd = safe_close(null_fd); + + fd_cloexec(STDIN_FILENO, false); + fd_cloexec(STDOUT_FILENO, false); + fd_cloexec(STDERR_FILENO, false); + + if (unshare(CLONE_NEWNET) < 0) + log_error_errno(errno, "Failed to lock tar into network namespace, ignoring: %m"); + + r = capability_bounding_set_drop(retain, true); + if (r < 0) + log_error_errno(r, "Failed to drop capabilities, ignoring: %m"); + + execlp("tar", "tar", "-C", path, "-c", "--xattrs", "--xattrs-include=*", ".", NULL); + log_error_errno(errno, "Failed to execute tar: %m"); + _exit(EXIT_FAILURE); + } + + pipefd[1] = safe_close(pipefd[1]); + r = pipefd[0]; + pipefd[0] = -1; + + *ret = pid; + + return r; +} diff --git a/src/grp-import/systemd-import/import-common.h b/src/grp-import/systemd-import/import-common.h new file mode 100644 index 0000000000..07d3250e71 --- /dev/null +++ b/src/grp-import/systemd-import/import-common.h @@ -0,0 +1,26 @@ +#pragma once + +/*** + This file is part of systemd. + + Copyright 2015 Lennart Poettering + + systemd is free software; you can redistribute it and/or modify it + under the terms of the GNU Lesser General Public License as published by + the Free Software Foundation; either version 2.1 of the License, or + (at your option) any later version. + + systemd is distributed in the hope that it will be useful, but + WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public License + along with systemd; If not, see . +***/ + +int import_make_read_only_fd(int fd); +int import_make_read_only(const char *path); + +int import_fork_tar_c(const char *path, pid_t *ret); +int import_fork_tar_x(const char *path, pid_t *ret); diff --git a/src/grp-import/systemd-import/import-compress.c b/src/grp-import/systemd-import/import-compress.c new file mode 100644 index 0000000000..f1766bbe3b --- /dev/null +++ b/src/grp-import/systemd-import/import-compress.c @@ -0,0 +1,469 @@ +/*** + This file is part of systemd. + + Copyright 2015 Lennart Poettering + + systemd is free software; you can redistribute it and/or modify it + under the terms of the GNU Lesser General Public License as published by + the Free Software Foundation; either version 2.1 of the License, or + (at your option) any later version. + + systemd is distributed in the hope that it will be useful, but + WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public License + along with systemd; If not, see . +***/ + +#include "import-compress.h" +#include "string-table.h" +#include "util.h" + +void import_compress_free(ImportCompress *c) { + assert(c); + + if (c->type == IMPORT_COMPRESS_XZ) + lzma_end(&c->xz); + else if (c->type == IMPORT_COMPRESS_GZIP) { + if (c->encoding) + deflateEnd(&c->gzip); + else + inflateEnd(&c->gzip); + } else if (c->type == IMPORT_COMPRESS_BZIP2) { + if (c->encoding) + BZ2_bzCompressEnd(&c->bzip2); + else + BZ2_bzDecompressEnd(&c->bzip2); + } + + c->type = IMPORT_COMPRESS_UNKNOWN; +} + +int import_uncompress_detect(ImportCompress *c, const void *data, size_t size) { + static const uint8_t xz_signature[] = { + 0xfd, '7', 'z', 'X', 'Z', 0x00 + }; + static const uint8_t gzip_signature[] = { + 0x1f, 0x8b + }; + static const uint8_t bzip2_signature[] = { + 'B', 'Z', 'h' + }; + + int r; + + assert(c); + + if (c->type != IMPORT_COMPRESS_UNKNOWN) + return 1; + + if (size < MAX3(sizeof(xz_signature), + sizeof(gzip_signature), + sizeof(bzip2_signature))) + return 0; + + assert(data); + + if (memcmp(data, xz_signature, sizeof(xz_signature)) == 0) { + lzma_ret xzr; + + xzr = lzma_stream_decoder(&c->xz, UINT64_MAX, LZMA_TELL_UNSUPPORTED_CHECK); + if (xzr != LZMA_OK) + return -EIO; + + c->type = IMPORT_COMPRESS_XZ; + + } else if (memcmp(data, gzip_signature, sizeof(gzip_signature)) == 0) { + r = inflateInit2(&c->gzip, 15+16); + if (r != Z_OK) + return -EIO; + + c->type = IMPORT_COMPRESS_GZIP; + + } else if (memcmp(data, bzip2_signature, sizeof(bzip2_signature)) == 0) { + r = BZ2_bzDecompressInit(&c->bzip2, 0, 0); + if (r != BZ_OK) + return -EIO; + + c->type = IMPORT_COMPRESS_BZIP2; + } else + c->type = IMPORT_COMPRESS_UNCOMPRESSED; + + c->encoding = false; + + return 1; +} + +int import_uncompress(ImportCompress *c, const void *data, size_t size, ImportCompressCallback callback, void *userdata) { + int r; + + assert(c); + assert(callback); + + r = import_uncompress_detect(c, data, size); + if (r <= 0) + return r; + + if (c->encoding) + return -EINVAL; + + if (size <= 0) + return 1; + + assert(data); + + switch (c->type) { + + case IMPORT_COMPRESS_UNCOMPRESSED: + r = callback(data, size, userdata); + if (r < 0) + return r; + + break; + + case IMPORT_COMPRESS_XZ: + c->xz.next_in = data; + c->xz.avail_in = size; + + while (c->xz.avail_in > 0) { + uint8_t buffer[16 * 1024]; + lzma_ret lzr; + + c->xz.next_out = buffer; + c->xz.avail_out = sizeof(buffer); + + lzr = lzma_code(&c->xz, LZMA_RUN); + if (lzr != LZMA_OK && lzr != LZMA_STREAM_END) + return -EIO; + + r = callback(buffer, sizeof(buffer) - c->xz.avail_out, userdata); + if (r < 0) + return r; + } + + break; + + case IMPORT_COMPRESS_GZIP: + c->gzip.next_in = (void*) data; + c->gzip.avail_in = size; + + while (c->gzip.avail_in > 0) { + uint8_t buffer[16 * 1024]; + + c->gzip.next_out = buffer; + c->gzip.avail_out = sizeof(buffer); + + r = inflate(&c->gzip, Z_NO_FLUSH); + if (r != Z_OK && r != Z_STREAM_END) + return -EIO; + + r = callback(buffer, sizeof(buffer) - c->gzip.avail_out, userdata); + if (r < 0) + return r; + } + + break; + + case IMPORT_COMPRESS_BZIP2: + c->bzip2.next_in = (void*) data; + c->bzip2.avail_in = size; + + while (c->bzip2.avail_in > 0) { + uint8_t buffer[16 * 1024]; + + c->bzip2.next_out = (char*) buffer; + c->bzip2.avail_out = sizeof(buffer); + + r = BZ2_bzDecompress(&c->bzip2); + if (r != BZ_OK && r != BZ_STREAM_END) + return -EIO; + + r = callback(buffer, sizeof(buffer) - c->bzip2.avail_out, userdata); + if (r < 0) + return r; + } + + break; + + default: + assert_not_reached("Unknown compression"); + } + + return 1; +} + +int import_compress_init(ImportCompress *c, ImportCompressType t) { + int r; + + assert(c); + + switch (t) { + + case IMPORT_COMPRESS_XZ: { + lzma_ret xzr; + + xzr = lzma_easy_encoder(&c->xz, LZMA_PRESET_DEFAULT, LZMA_CHECK_CRC64); + if (xzr != LZMA_OK) + return -EIO; + + c->type = IMPORT_COMPRESS_XZ; + break; + } + + case IMPORT_COMPRESS_GZIP: + r = deflateInit2(&c->gzip, Z_DEFAULT_COMPRESSION, Z_DEFLATED, 15 + 16, 8, Z_DEFAULT_STRATEGY); + if (r != Z_OK) + return -EIO; + + c->type = IMPORT_COMPRESS_GZIP; + break; + + case IMPORT_COMPRESS_BZIP2: + r = BZ2_bzCompressInit(&c->bzip2, 9, 0, 0); + if (r != BZ_OK) + return -EIO; + + c->type = IMPORT_COMPRESS_BZIP2; + break; + + case IMPORT_COMPRESS_UNCOMPRESSED: + c->type = IMPORT_COMPRESS_UNCOMPRESSED; + break; + + default: + return -EOPNOTSUPP; + } + + c->encoding = true; + return 0; +} + +static int enlarge_buffer(void **buffer, size_t *buffer_size, size_t *buffer_allocated) { + size_t l; + void *p; + + if (*buffer_allocated > *buffer_size) + return 0; + + l = MAX(16*1024U, (*buffer_size * 2)); + p = realloc(*buffer, l); + if (!p) + return -ENOMEM; + + *buffer = p; + *buffer_allocated = l; + + return 1; +} + +int import_compress(ImportCompress *c, const void *data, size_t size, void **buffer, size_t *buffer_size, size_t *buffer_allocated) { + int r; + + assert(c); + assert(buffer); + assert(buffer_size); + assert(buffer_allocated); + + if (!c->encoding) + return -EINVAL; + + if (size <= 0) + return 0; + + assert(data); + + *buffer_size = 0; + + switch (c->type) { + + case IMPORT_COMPRESS_XZ: + + c->xz.next_in = data; + c->xz.avail_in = size; + + while (c->xz.avail_in > 0) { + lzma_ret lzr; + + r = enlarge_buffer(buffer, buffer_size, buffer_allocated); + if (r < 0) + return r; + + c->xz.next_out = (uint8_t*) *buffer + *buffer_size; + c->xz.avail_out = *buffer_allocated - *buffer_size; + + lzr = lzma_code(&c->xz, LZMA_RUN); + if (lzr != LZMA_OK) + return -EIO; + + *buffer_size += (*buffer_allocated - *buffer_size) - c->xz.avail_out; + } + + break; + + case IMPORT_COMPRESS_GZIP: + + c->gzip.next_in = (void*) data; + c->gzip.avail_in = size; + + while (c->gzip.avail_in > 0) { + r = enlarge_buffer(buffer, buffer_size, buffer_allocated); + if (r < 0) + return r; + + c->gzip.next_out = (uint8_t*) *buffer + *buffer_size; + c->gzip.avail_out = *buffer_allocated - *buffer_size; + + r = deflate(&c->gzip, Z_NO_FLUSH); + if (r != Z_OK) + return -EIO; + + *buffer_size += (*buffer_allocated - *buffer_size) - c->gzip.avail_out; + } + + break; + + case IMPORT_COMPRESS_BZIP2: + + c->bzip2.next_in = (void*) data; + c->bzip2.avail_in = size; + + while (c->bzip2.avail_in > 0) { + r = enlarge_buffer(buffer, buffer_size, buffer_allocated); + if (r < 0) + return r; + + c->bzip2.next_out = (void*) ((uint8_t*) *buffer + *buffer_size); + c->bzip2.avail_out = *buffer_allocated - *buffer_size; + + r = BZ2_bzCompress(&c->bzip2, BZ_RUN); + if (r != BZ_RUN_OK) + return -EIO; + + *buffer_size += (*buffer_allocated - *buffer_size) - c->bzip2.avail_out; + } + + break; + + case IMPORT_COMPRESS_UNCOMPRESSED: + + if (*buffer_allocated < size) { + void *p; + + p = realloc(*buffer, size); + if (!p) + return -ENOMEM; + + *buffer = p; + *buffer_allocated = size; + } + + memcpy(*buffer, data, size); + *buffer_size = size; + break; + + default: + return -EOPNOTSUPP; + } + + return 0; +} + +int import_compress_finish(ImportCompress *c, void **buffer, size_t *buffer_size, size_t *buffer_allocated) { + int r; + + assert(c); + assert(buffer); + assert(buffer_size); + assert(buffer_allocated); + + if (!c->encoding) + return -EINVAL; + + *buffer_size = 0; + + switch (c->type) { + + case IMPORT_COMPRESS_XZ: { + lzma_ret lzr; + + c->xz.avail_in = 0; + + do { + r = enlarge_buffer(buffer, buffer_size, buffer_allocated); + if (r < 0) + return r; + + c->xz.next_out = (uint8_t*) *buffer + *buffer_size; + c->xz.avail_out = *buffer_allocated - *buffer_size; + + lzr = lzma_code(&c->xz, LZMA_FINISH); + if (lzr != LZMA_OK && lzr != LZMA_STREAM_END) + return -EIO; + + *buffer_size += (*buffer_allocated - *buffer_size) - c->xz.avail_out; + } while (lzr != LZMA_STREAM_END); + + break; + } + + case IMPORT_COMPRESS_GZIP: + c->gzip.avail_in = 0; + + do { + r = enlarge_buffer(buffer, buffer_size, buffer_allocated); + if (r < 0) + return r; + + c->gzip.next_out = (uint8_t*) *buffer + *buffer_size; + c->gzip.avail_out = *buffer_allocated - *buffer_size; + + r = deflate(&c->gzip, Z_FINISH); + if (r != Z_OK && r != Z_STREAM_END) + return -EIO; + + *buffer_size += (*buffer_allocated - *buffer_size) - c->gzip.avail_out; + } while (r != Z_STREAM_END); + + break; + + case IMPORT_COMPRESS_BZIP2: + c->bzip2.avail_in = 0; + + do { + r = enlarge_buffer(buffer, buffer_size, buffer_allocated); + if (r < 0) + return r; + + c->bzip2.next_out = (void*) ((uint8_t*) *buffer + *buffer_size); + c->bzip2.avail_out = *buffer_allocated - *buffer_size; + + r = BZ2_bzCompress(&c->bzip2, BZ_FINISH); + if (r != BZ_FINISH_OK && r != BZ_STREAM_END) + return -EIO; + + *buffer_size += (*buffer_allocated - *buffer_size) - c->bzip2.avail_out; + } while (r != BZ_STREAM_END); + + break; + + case IMPORT_COMPRESS_UNCOMPRESSED: + break; + + default: + return -EOPNOTSUPP; + } + + return 0; +} + +static const char* const import_compress_type_table[_IMPORT_COMPRESS_TYPE_MAX] = { + [IMPORT_COMPRESS_UNKNOWN] = "unknown", + [IMPORT_COMPRESS_UNCOMPRESSED] = "uncompressed", + [IMPORT_COMPRESS_XZ] = "xz", + [IMPORT_COMPRESS_GZIP] = "gzip", + [IMPORT_COMPRESS_BZIP2] = "bzip2", +}; + +DEFINE_STRING_TABLE_LOOKUP(import_compress_type, ImportCompressType); diff --git a/src/grp-import/systemd-import/import-compress.h b/src/grp-import/systemd-import/import-compress.h new file mode 100644 index 0000000000..6b59d0724b --- /dev/null +++ b/src/grp-import/systemd-import/import-compress.h @@ -0,0 +1,61 @@ +#pragma once + +/*** + This file is part of systemd. + + Copyright 2015 Lennart Poettering + + systemd is free software; you can redistribute it and/or modify it + under the terms of the GNU Lesser General Public License as published by + the Free Software Foundation; either version 2.1 of the License, or + (at your option) any later version. + + systemd is distributed in the hope that it will be useful, but + WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public License + along with systemd; If not, see . +***/ + +#include +#include +#include +#include + +#include "macro.h" + +typedef enum ImportCompressType { + IMPORT_COMPRESS_UNKNOWN, + IMPORT_COMPRESS_UNCOMPRESSED, + IMPORT_COMPRESS_XZ, + IMPORT_COMPRESS_GZIP, + IMPORT_COMPRESS_BZIP2, + _IMPORT_COMPRESS_TYPE_MAX, + _IMPORT_COMPRESS_TYPE_INVALID = -1, +} ImportCompressType; + +typedef struct ImportCompress { + ImportCompressType type; + bool encoding; + union { + lzma_stream xz; + z_stream gzip; + bz_stream bzip2; + }; +} ImportCompress; + +typedef int (*ImportCompressCallback)(const void *data, size_t size, void *userdata); + +void import_compress_free(ImportCompress *c); + +int import_uncompress_detect(ImportCompress *c, const void *data, size_t size); +int import_uncompress(ImportCompress *c, const void *data, size_t size, ImportCompressCallback callback, void *userdata); + +int import_compress_init(ImportCompress *c, ImportCompressType t); +int import_compress(ImportCompress *c, const void *data, size_t size, void **buffer, size_t *buffer_size, size_t *buffer_allocated); +int import_compress_finish(ImportCompress *c, void **buffer, size_t *buffer_size, size_t *buffer_allocated); + +const char* import_compress_type_to_string(ImportCompressType t) _const_; +ImportCompressType import_compress_type_from_string(const char *s) _pure_; diff --git a/src/grp-import/systemd-import/import-pubring.gpg b/src/grp-import/systemd-import/import-pubring.gpg new file mode 100644 index 0000000000..be27776896 Binary files /dev/null and b/src/grp-import/systemd-import/import-pubring.gpg differ diff --git a/src/grp-import/systemd-import/import-raw.c b/src/grp-import/systemd-import/import-raw.c new file mode 100644 index 0000000000..ce37392707 --- /dev/null +++ b/src/grp-import/systemd-import/import-raw.c @@ -0,0 +1,467 @@ +/*** + This file is part of systemd. + + Copyright 2015 Lennart Poettering + + systemd is free software; you can redistribute it and/or modify it + under the terms of the GNU Lesser General Public License as published by + the Free Software Foundation; either version 2.1 of the License, or + (at your option) any later version. + + systemd is distributed in the hope that it will be useful, but + WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public License + along with systemd; If not, see . +***/ + +#include + +#include +#include + +#include "alloc-util.h" +#include "btrfs-util.h" +#include "chattr-util.h" +#include "copy.h" +#include "fd-util.h" +#include "fileio.h" +#include "fs-util.h" +#include "hostname-util.h" +#include "import-common.h" +#include "import-compress.h" +#include "import-raw.h" +#include "io-util.h" +#include "machine-pool.h" +#include "mkdir.h" +#include "path-util.h" +#include "qcow2-util.h" +#include "ratelimit.h" +#include "rm-rf.h" +#include "string-util.h" +#include "util.h" + +struct RawImport { + sd_event *event; + + char *image_root; + + RawImportFinished on_finished; + void *userdata; + + char *local; + bool force_local; + bool read_only; + bool grow_machine_directory; + + char *temp_path; + char *final_path; + + int input_fd; + int output_fd; + + ImportCompress compress; + + uint64_t written_since_last_grow; + + sd_event_source *input_event_source; + + uint8_t buffer[16*1024]; + size_t buffer_size; + + uint64_t written_compressed; + uint64_t written_uncompressed; + + struct stat st; + + unsigned last_percent; + RateLimit progress_rate_limit; +}; + +RawImport* raw_import_unref(RawImport *i) { + if (!i) + return NULL; + + sd_event_unref(i->event); + + if (i->temp_path) { + (void) unlink(i->temp_path); + free(i->temp_path); + } + + import_compress_free(&i->compress); + + sd_event_source_unref(i->input_event_source); + + safe_close(i->output_fd); + + free(i->final_path); + free(i->image_root); + free(i->local); + free(i); + + return NULL; +} + +int raw_import_new( + RawImport **ret, + sd_event *event, + const char *image_root, + RawImportFinished on_finished, + void *userdata) { + + _cleanup_(raw_import_unrefp) RawImport *i = NULL; + int r; + + assert(ret); + + i = new0(RawImport, 1); + if (!i) + return -ENOMEM; + + i->input_fd = i->output_fd = -1; + i->on_finished = on_finished; + i->userdata = userdata; + + RATELIMIT_INIT(i->progress_rate_limit, 100 * USEC_PER_MSEC, 1); + i->last_percent = (unsigned) -1; + + i->image_root = strdup(image_root ?: "/var/lib/machines"); + if (!i->image_root) + return -ENOMEM; + + i->grow_machine_directory = path_startswith(i->image_root, "/var/lib/machines"); + + if (event) + i->event = sd_event_ref(event); + else { + r = sd_event_default(&i->event); + if (r < 0) + return r; + } + + *ret = i; + i = NULL; + + return 0; +} + +static void raw_import_report_progress(RawImport *i) { + unsigned percent; + assert(i); + + /* We have no size information, unless the source is a regular file */ + if (!S_ISREG(i->st.st_mode)) + return; + + if (i->written_compressed >= (uint64_t) i->st.st_size) + percent = 100; + else + percent = (unsigned) ((i->written_compressed * UINT64_C(100)) / (uint64_t) i->st.st_size); + + if (percent == i->last_percent) + return; + + if (!ratelimit_test(&i->progress_rate_limit)) + return; + + sd_notifyf(false, "X_IMPORT_PROGRESS=%u", percent); + log_info("Imported %u%%.", percent); + + i->last_percent = percent; +} + +static int raw_import_maybe_convert_qcow2(RawImport *i) { + _cleanup_close_ int converted_fd = -1; + _cleanup_free_ char *t = NULL; + int r; + + assert(i); + + r = qcow2_detect(i->output_fd); + if (r < 0) + return log_error_errno(r, "Failed to detect whether this is a QCOW2 image: %m"); + if (r == 0) + return 0; + + /* This is a QCOW2 image, let's convert it */ + r = tempfn_random(i->final_path, NULL, &t); + if (r < 0) + return log_oom(); + + converted_fd = open(t, O_RDWR|O_CREAT|O_EXCL|O_NOCTTY|O_CLOEXEC, 0664); + if (converted_fd < 0) + return log_error_errno(errno, "Failed to create %s: %m", t); + + r = chattr_fd(converted_fd, FS_NOCOW_FL, FS_NOCOW_FL); + if (r < 0) + log_warning_errno(r, "Failed to set file attributes on %s: %m", t); + + log_info("Unpacking QCOW2 file."); + + r = qcow2_convert(i->output_fd, converted_fd); + if (r < 0) { + unlink(t); + return log_error_errno(r, "Failed to convert qcow2 image: %m"); + } + + (void) unlink(i->temp_path); + free(i->temp_path); + i->temp_path = t; + t = NULL; + + safe_close(i->output_fd); + i->output_fd = converted_fd; + converted_fd = -1; + + return 1; +} + +static int raw_import_finish(RawImport *i) { + int r; + + assert(i); + assert(i->output_fd >= 0); + assert(i->temp_path); + assert(i->final_path); + + /* In case this was a sparse file, make sure the file system is right */ + if (i->written_uncompressed > 0) { + if (ftruncate(i->output_fd, i->written_uncompressed) < 0) + return log_error_errno(errno, "Failed to truncate file: %m"); + } + + r = raw_import_maybe_convert_qcow2(i); + if (r < 0) + return r; + + if (S_ISREG(i->st.st_mode)) { + (void) copy_times(i->input_fd, i->output_fd); + (void) copy_xattr(i->input_fd, i->output_fd); + } + + if (i->read_only) { + r = import_make_read_only_fd(i->output_fd); + if (r < 0) + return r; + } + + if (i->force_local) + (void) rm_rf(i->final_path, REMOVE_ROOT|REMOVE_PHYSICAL|REMOVE_SUBVOLUME); + + r = rename_noreplace(AT_FDCWD, i->temp_path, AT_FDCWD, i->final_path); + if (r < 0) + return log_error_errno(r, "Failed to move image into place: %m"); + + i->temp_path = mfree(i->temp_path); + + return 0; +} + +static int raw_import_open_disk(RawImport *i) { + int r; + + assert(i); + + assert(!i->final_path); + assert(!i->temp_path); + assert(i->output_fd < 0); + + i->final_path = strjoin(i->image_root, "/", i->local, ".raw", NULL); + if (!i->final_path) + return log_oom(); + + r = tempfn_random(i->final_path, NULL, &i->temp_path); + if (r < 0) + return log_oom(); + + (void) mkdir_parents_label(i->temp_path, 0700); + + i->output_fd = open(i->temp_path, O_RDWR|O_CREAT|O_EXCL|O_NOCTTY|O_CLOEXEC, 0664); + if (i->output_fd < 0) + return log_error_errno(errno, "Failed to open destination %s: %m", i->temp_path); + + r = chattr_fd(i->output_fd, FS_NOCOW_FL, FS_NOCOW_FL); + if (r < 0) + log_warning_errno(r, "Failed to set file attributes on %s: %m", i->temp_path); + + return 0; +} + +static int raw_import_try_reflink(RawImport *i) { + off_t p; + int r; + + assert(i); + assert(i->input_fd >= 0); + assert(i->output_fd >= 0); + + if (i->compress.type != IMPORT_COMPRESS_UNCOMPRESSED) + return 0; + + if (!S_ISREG(i->st.st_mode)) + return 0; + + p = lseek(i->input_fd, 0, SEEK_CUR); + if (p == (off_t) -1) + return log_error_errno(errno, "Failed to read file offset of input file: %m"); + + /* Let's only try a btrfs reflink, if we are reading from the beginning of the file */ + if ((uint64_t) p != (uint64_t) i->buffer_size) + return 0; + + r = btrfs_reflink(i->input_fd, i->output_fd); + if (r >= 0) + return 1; + + return 0; +} + +static int raw_import_write(const void *p, size_t sz, void *userdata) { + RawImport *i = userdata; + ssize_t n; + + if (i->grow_machine_directory && i->written_since_last_grow >= GROW_INTERVAL_BYTES) { + i->written_since_last_grow = 0; + grow_machine_directory(); + } + + n = sparse_write(i->output_fd, p, sz, 64); + if (n < 0) + return -errno; + if ((size_t) n < sz) + return -EIO; + + i->written_uncompressed += sz; + i->written_since_last_grow += sz; + + return 0; +} + +static int raw_import_process(RawImport *i) { + ssize_t l; + int r; + + assert(i); + assert(i->buffer_size < sizeof(i->buffer)); + + l = read(i->input_fd, i->buffer + i->buffer_size, sizeof(i->buffer) - i->buffer_size); + if (l < 0) { + if (errno == EAGAIN) + return 0; + + r = log_error_errno(errno, "Failed to read input file: %m"); + goto finish; + } + if (l == 0) { + if (i->compress.type == IMPORT_COMPRESS_UNKNOWN) { + log_error("Premature end of file: %m"); + r = -EIO; + goto finish; + } + + r = raw_import_finish(i); + goto finish; + } + + i->buffer_size += l; + + if (i->compress.type == IMPORT_COMPRESS_UNKNOWN) { + r = import_uncompress_detect(&i->compress, i->buffer, i->buffer_size); + if (r < 0) { + log_error("Failed to detect file compression: %m"); + goto finish; + } + if (r == 0) /* Need more data */ + return 0; + + r = raw_import_open_disk(i); + if (r < 0) + goto finish; + + r = raw_import_try_reflink(i); + if (r < 0) + goto finish; + if (r > 0) { + r = raw_import_finish(i); + goto finish; + } + } + + r = import_uncompress(&i->compress, i->buffer, i->buffer_size, raw_import_write, i); + if (r < 0) { + log_error_errno(r, "Failed to decode and write: %m"); + goto finish; + } + + i->written_compressed += i->buffer_size; + i->buffer_size = 0; + + raw_import_report_progress(i); + + return 0; + +finish: + if (i->on_finished) + i->on_finished(i, r, i->userdata); + else + sd_event_exit(i->event, r); + + return 0; +} + +static int raw_import_on_input(sd_event_source *s, int fd, uint32_t revents, void *userdata) { + RawImport *i = userdata; + + return raw_import_process(i); +} + +static int raw_import_on_defer(sd_event_source *s, void *userdata) { + RawImport *i = userdata; + + return raw_import_process(i); +} + +int raw_import_start(RawImport *i, int fd, const char *local, bool force_local, bool read_only) { + int r; + + assert(i); + assert(fd >= 0); + assert(local); + + if (!machine_name_is_valid(local)) + return -EINVAL; + + if (i->input_fd >= 0) + return -EBUSY; + + r = fd_nonblock(fd, true); + if (r < 0) + return r; + + r = free_and_strdup(&i->local, local); + if (r < 0) + return r; + i->force_local = force_local; + i->read_only = read_only; + + if (fstat(fd, &i->st) < 0) + return -errno; + + r = sd_event_add_io(i->event, &i->input_event_source, fd, EPOLLIN, raw_import_on_input, i); + if (r == -EPERM) { + /* This fd does not support epoll, for example because it is a regular file. Busy read in that case */ + r = sd_event_add_defer(i->event, &i->input_event_source, raw_import_on_defer, i); + if (r < 0) + return r; + + r = sd_event_source_set_enabled(i->input_event_source, SD_EVENT_ON); + } + if (r < 0) + return r; + + i->input_fd = fd; + return r; +} diff --git a/src/grp-import/systemd-import/import-raw.h b/src/grp-import/systemd-import/import-raw.h new file mode 100644 index 0000000000..f0a315c088 --- /dev/null +++ b/src/grp-import/systemd-import/import-raw.h @@ -0,0 +1,36 @@ +#pragma once + +/*** + This file is part of systemd. + + Copyright 2015 Lennart Poettering + + systemd is free software; you can redistribute it and/or modify it + under the terms of the GNU Lesser General Public License as published by + the Free Software Foundation; either version 2.1 of the License, or + (at your option) any later version. + + systemd is distributed in the hope that it will be useful, but + WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public License + along with systemd; If not, see . +***/ + +#include + +#include "import-util.h" +#include "macro.h" + +typedef struct RawImport RawImport; + +typedef void (*RawImportFinished)(RawImport *import, int error, void *userdata); + +int raw_import_new(RawImport **import, sd_event *event, const char *image_root, RawImportFinished on_finished, void *userdata); +RawImport* raw_import_unref(RawImport *import); + +DEFINE_TRIVIAL_CLEANUP_FUNC(RawImport*, raw_import_unref); + +int raw_import_start(RawImport *i, int fd, const char *local, bool force_local, bool read_only); diff --git a/src/grp-import/systemd-import/import-tar.c b/src/grp-import/systemd-import/import-tar.c new file mode 100644 index 0000000000..016d05e77d --- /dev/null +++ b/src/grp-import/systemd-import/import-tar.c @@ -0,0 +1,388 @@ +/*** + This file is part of systemd. + + Copyright 2015 Lennart Poettering + + systemd is free software; you can redistribute it and/or modify it + under the terms of the GNU Lesser General Public License as published by + the Free Software Foundation; either version 2.1 of the License, or + (at your option) any later version. + + systemd is distributed in the hope that it will be useful, but + WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public License + along with systemd; If not, see . +***/ + +#include + +#include +#include + +#include "alloc-util.h" +#include "btrfs-util.h" +#include "copy.h" +#include "fd-util.h" +#include "fileio.h" +#include "fs-util.h" +#include "hostname-util.h" +#include "import-common.h" +#include "import-compress.h" +#include "import-tar.h" +#include "io-util.h" +#include "machine-pool.h" +#include "mkdir.h" +#include "path-util.h" +#include "process-util.h" +#include "qcow2-util.h" +#include "ratelimit.h" +#include "rm-rf.h" +#include "string-util.h" +#include "util.h" + +struct TarImport { + sd_event *event; + + char *image_root; + + TarImportFinished on_finished; + void *userdata; + + char *local; + bool force_local; + bool read_only; + bool grow_machine_directory; + + char *temp_path; + char *final_path; + + int input_fd; + int tar_fd; + + ImportCompress compress; + + uint64_t written_since_last_grow; + + sd_event_source *input_event_source; + + uint8_t buffer[16*1024]; + size_t buffer_size; + + uint64_t written_compressed; + uint64_t written_uncompressed; + + struct stat st; + + pid_t tar_pid; + + unsigned last_percent; + RateLimit progress_rate_limit; +}; + +TarImport* tar_import_unref(TarImport *i) { + if (!i) + return NULL; + + sd_event_source_unref(i->input_event_source); + + if (i->tar_pid > 1) { + (void) kill_and_sigcont(i->tar_pid, SIGKILL); + (void) wait_for_terminate(i->tar_pid, NULL); + } + + if (i->temp_path) { + (void) rm_rf(i->temp_path, REMOVE_ROOT|REMOVE_PHYSICAL|REMOVE_SUBVOLUME); + free(i->temp_path); + } + + import_compress_free(&i->compress); + + sd_event_unref(i->event); + + safe_close(i->tar_fd); + + free(i->final_path); + free(i->image_root); + free(i->local); + free(i); + + return NULL; +} + +int tar_import_new( + TarImport **ret, + sd_event *event, + const char *image_root, + TarImportFinished on_finished, + void *userdata) { + + _cleanup_(tar_import_unrefp) TarImport *i = NULL; + int r; + + assert(ret); + + i = new0(TarImport, 1); + if (!i) + return -ENOMEM; + + i->input_fd = i->tar_fd = -1; + i->on_finished = on_finished; + i->userdata = userdata; + + RATELIMIT_INIT(i->progress_rate_limit, 100 * USEC_PER_MSEC, 1); + i->last_percent = (unsigned) -1; + + i->image_root = strdup(image_root ?: "/var/lib/machines"); + if (!i->image_root) + return -ENOMEM; + + i->grow_machine_directory = path_startswith(i->image_root, "/var/lib/machines"); + + if (event) + i->event = sd_event_ref(event); + else { + r = sd_event_default(&i->event); + if (r < 0) + return r; + } + + *ret = i; + i = NULL; + + return 0; +} + +static void tar_import_report_progress(TarImport *i) { + unsigned percent; + assert(i); + + /* We have no size information, unless the source is a regular file */ + if (!S_ISREG(i->st.st_mode)) + return; + + if (i->written_compressed >= (uint64_t) i->st.st_size) + percent = 100; + else + percent = (unsigned) ((i->written_compressed * UINT64_C(100)) / (uint64_t) i->st.st_size); + + if (percent == i->last_percent) + return; + + if (!ratelimit_test(&i->progress_rate_limit)) + return; + + sd_notifyf(false, "X_IMPORT_PROGRESS=%u", percent); + log_info("Imported %u%%.", percent); + + i->last_percent = percent; +} + +static int tar_import_finish(TarImport *i) { + int r; + + assert(i); + assert(i->tar_fd >= 0); + assert(i->temp_path); + assert(i->final_path); + + i->tar_fd = safe_close(i->tar_fd); + + if (i->tar_pid > 0) { + r = wait_for_terminate_and_warn("tar", i->tar_pid, true); + i->tar_pid = 0; + if (r < 0) + return r; + } + + if (i->read_only) { + r = import_make_read_only(i->temp_path); + if (r < 0) + return r; + } + + if (i->force_local) + (void) rm_rf(i->final_path, REMOVE_ROOT|REMOVE_PHYSICAL|REMOVE_SUBVOLUME); + + r = rename_noreplace(AT_FDCWD, i->temp_path, AT_FDCWD, i->final_path); + if (r < 0) + return log_error_errno(r, "Failed to move image into place: %m"); + + i->temp_path = mfree(i->temp_path); + + return 0; +} + +static int tar_import_fork_tar(TarImport *i) { + int r; + + assert(i); + + assert(!i->final_path); + assert(!i->temp_path); + assert(i->tar_fd < 0); + + i->final_path = strjoin(i->image_root, "/", i->local, NULL); + if (!i->final_path) + return log_oom(); + + r = tempfn_random(i->final_path, NULL, &i->temp_path); + if (r < 0) + return log_oom(); + + (void) mkdir_parents_label(i->temp_path, 0700); + + r = btrfs_subvol_make(i->temp_path); + if (r == -ENOTTY) { + if (mkdir(i->temp_path, 0755) < 0) + return log_error_errno(errno, "Failed to create directory %s: %m", i->temp_path); + } else if (r < 0) + return log_error_errno(r, "Failed to create subvolume %s: %m", i->temp_path); + else + (void) import_assign_pool_quota_and_warn(i->temp_path); + + i->tar_fd = import_fork_tar_x(i->temp_path, &i->tar_pid); + if (i->tar_fd < 0) + return i->tar_fd; + + return 0; +} + +static int tar_import_write(const void *p, size_t sz, void *userdata) { + TarImport *i = userdata; + int r; + + if (i->grow_machine_directory && i->written_since_last_grow >= GROW_INTERVAL_BYTES) { + i->written_since_last_grow = 0; + grow_machine_directory(); + } + + r = loop_write(i->tar_fd, p, sz, false); + if (r < 0) + return r; + + i->written_uncompressed += sz; + i->written_since_last_grow += sz; + + return 0; +} + +static int tar_import_process(TarImport *i) { + ssize_t l; + int r; + + assert(i); + assert(i->buffer_size < sizeof(i->buffer)); + + l = read(i->input_fd, i->buffer + i->buffer_size, sizeof(i->buffer) - i->buffer_size); + if (l < 0) { + if (errno == EAGAIN) + return 0; + + r = log_error_errno(errno, "Failed to read input file: %m"); + goto finish; + } + if (l == 0) { + if (i->compress.type == IMPORT_COMPRESS_UNKNOWN) { + log_error("Premature end of file: %m"); + r = -EIO; + goto finish; + } + + r = tar_import_finish(i); + goto finish; + } + + i->buffer_size += l; + + if (i->compress.type == IMPORT_COMPRESS_UNKNOWN) { + r = import_uncompress_detect(&i->compress, i->buffer, i->buffer_size); + if (r < 0) { + log_error("Failed to detect file compression: %m"); + goto finish; + } + if (r == 0) /* Need more data */ + return 0; + + r = tar_import_fork_tar(i); + if (r < 0) + goto finish; + } + + r = import_uncompress(&i->compress, i->buffer, i->buffer_size, tar_import_write, i); + if (r < 0) { + log_error_errno(r, "Failed to decode and write: %m"); + goto finish; + } + + i->written_compressed += i->buffer_size; + i->buffer_size = 0; + + tar_import_report_progress(i); + + return 0; + +finish: + if (i->on_finished) + i->on_finished(i, r, i->userdata); + else + sd_event_exit(i->event, r); + + return 0; +} + +static int tar_import_on_input(sd_event_source *s, int fd, uint32_t revents, void *userdata) { + TarImport *i = userdata; + + return tar_import_process(i); +} + +static int tar_import_on_defer(sd_event_source *s, void *userdata) { + TarImport *i = userdata; + + return tar_import_process(i); +} + +int tar_import_start(TarImport *i, int fd, const char *local, bool force_local, bool read_only) { + int r; + + assert(i); + assert(fd >= 0); + assert(local); + + if (!machine_name_is_valid(local)) + return -EINVAL; + + if (i->input_fd >= 0) + return -EBUSY; + + r = fd_nonblock(fd, true); + if (r < 0) + return r; + + r = free_and_strdup(&i->local, local); + if (r < 0) + return r; + i->force_local = force_local; + i->read_only = read_only; + + if (fstat(fd, &i->st) < 0) + return -errno; + + r = sd_event_add_io(i->event, &i->input_event_source, fd, EPOLLIN, tar_import_on_input, i); + if (r == -EPERM) { + /* This fd does not support epoll, for example because it is a regular file. Busy read in that case */ + r = sd_event_add_defer(i->event, &i->input_event_source, tar_import_on_defer, i); + if (r < 0) + return r; + + r = sd_event_source_set_enabled(i->input_event_source, SD_EVENT_ON); + } + if (r < 0) + return r; + + i->input_fd = fd; + return r; +} diff --git a/src/grp-import/systemd-import/import-tar.h b/src/grp-import/systemd-import/import-tar.h new file mode 100644 index 0000000000..b66b00ddfd --- /dev/null +++ b/src/grp-import/systemd-import/import-tar.h @@ -0,0 +1,36 @@ +#pragma once + +/*** + This file is part of systemd. + + Copyright 2015 Lennart Poettering + + systemd is free software; you can redistribute it and/or modify it + under the terms of the GNU Lesser General Public License as published by + the Free Software Foundation; either version 2.1 of the License, or + (at your option) any later version. + + systemd is distributed in the hope that it will be useful, but + WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public License + along with systemd; If not, see . +***/ + +#include + +#include "import-util.h" +#include "macro.h" + +typedef struct TarImport TarImport; + +typedef void (*TarImportFinished)(TarImport *import, int error, void *userdata); + +int tar_import_new(TarImport **import, sd_event *event, const char *image_root, TarImportFinished on_finished, void *userdata); +TarImport* tar_import_unref(TarImport *import); + +DEFINE_TRIVIAL_CLEANUP_FUNC(TarImport*, tar_import_unref); + +int tar_import_start(TarImport *import, int fd, const char *local, bool force_local, bool read_only); diff --git a/src/grp-import/systemd-import/import.c b/src/grp-import/systemd-import/import.c new file mode 100644 index 0000000000..338847dbc2 --- /dev/null +++ b/src/grp-import/systemd-import/import.c @@ -0,0 +1,337 @@ +/*** + This file is part of systemd. + + Copyright 2015 Lennart Poettering + + systemd is free software; you can redistribute it and/or modify it + under the terms of the GNU Lesser General Public License as published by + the Free Software Foundation; either version 2.1 of the License, or + (at your option) any later version. + + systemd is distributed in the hope that it will be useful, but + WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public License + along with systemd; If not, see . +***/ + +#include + +#include + +#include "alloc-util.h" +#include "fd-util.h" +#include "fs-util.h" +#include "hostname-util.h" +#include "import-raw.h" +#include "import-tar.h" +#include "import-util.h" +#include "machine-image.h" +#include "signal-util.h" +#include "string-util.h" +#include "verbs.h" + +static bool arg_force = false; +static bool arg_read_only = false; +static const char *arg_image_root = "/var/lib/machines"; + +static int interrupt_signal_handler(sd_event_source *s, const struct signalfd_siginfo *si, void *userdata) { + log_notice("Transfer aborted."); + sd_event_exit(sd_event_source_get_event(s), EINTR); + return 0; +} + +static void on_tar_finished(TarImport *import, int error, void *userdata) { + sd_event *event = userdata; + assert(import); + + if (error == 0) + log_info("Operation completed successfully."); + + sd_event_exit(event, abs(error)); +} + +static int import_tar(int argc, char *argv[], void *userdata) { + _cleanup_(tar_import_unrefp) TarImport *import = NULL; + _cleanup_(sd_event_unrefp) sd_event *event = NULL; + const char *path = NULL, *local = NULL; + _cleanup_free_ char *ll = NULL; + _cleanup_close_ int open_fd = -1; + int r, fd; + + if (argc >= 2) + path = argv[1]; + if (isempty(path) || streq(path, "-")) + path = NULL; + + if (argc >= 3) + local = argv[2]; + else if (path) + local = basename(path); + if (isempty(local) || streq(local, "-")) + local = NULL; + + if (local) { + r = tar_strip_suffixes(local, &ll); + if (r < 0) + return log_oom(); + + local = ll; + + if (!machine_name_is_valid(local)) { + log_error("Local image name '%s' is not valid.", local); + return -EINVAL; + } + + if (!arg_force) { + r = image_find(local, NULL); + if (r < 0) + return log_error_errno(r, "Failed to check whether image '%s' exists: %m", local); + else if (r > 0) { + log_error_errno(EEXIST, "Image '%s' already exists.", local); + return -EEXIST; + } + } + } else + local = "imported"; + + if (path) { + open_fd = open(path, O_RDONLY|O_CLOEXEC|O_NOCTTY); + if (open_fd < 0) + return log_error_errno(errno, "Failed to open tar image to import: %m"); + + fd = open_fd; + + log_info("Importing '%s', saving as '%s'.", path, local); + } else { + _cleanup_free_ char *pretty = NULL; + + fd = STDIN_FILENO; + + (void) readlink_malloc("/proc/self/fd/0", &pretty); + log_info("Importing '%s', saving as '%s'.", strna(pretty), local); + } + + r = sd_event_default(&event); + if (r < 0) + return log_error_errno(r, "Failed to allocate event loop: %m"); + + assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGTERM, SIGINT, -1) >= 0); + (void) sd_event_add_signal(event, NULL, SIGTERM, interrupt_signal_handler, NULL); + (void) sd_event_add_signal(event, NULL, SIGINT, interrupt_signal_handler, NULL); + + r = tar_import_new(&import, event, arg_image_root, on_tar_finished, event); + if (r < 0) + return log_error_errno(r, "Failed to allocate importer: %m"); + + r = tar_import_start(import, fd, local, arg_force, arg_read_only); + if (r < 0) + return log_error_errno(r, "Failed to import image: %m"); + + r = sd_event_loop(event); + if (r < 0) + return log_error_errno(r, "Failed to run event loop: %m"); + + log_info("Exiting."); + return -r; +} + +static void on_raw_finished(RawImport *import, int error, void *userdata) { + sd_event *event = userdata; + assert(import); + + if (error == 0) + log_info("Operation completed successfully."); + + sd_event_exit(event, abs(error)); +} + +static int import_raw(int argc, char *argv[], void *userdata) { + _cleanup_(raw_import_unrefp) RawImport *import = NULL; + _cleanup_(sd_event_unrefp) sd_event *event = NULL; + const char *path = NULL, *local = NULL; + _cleanup_free_ char *ll = NULL; + _cleanup_close_ int open_fd = -1; + int r, fd; + + if (argc >= 2) + path = argv[1]; + if (isempty(path) || streq(path, "-")) + path = NULL; + + if (argc >= 3) + local = argv[2]; + else if (path) + local = basename(path); + if (isempty(local) || streq(local, "-")) + local = NULL; + + if (local) { + r = raw_strip_suffixes(local, &ll); + if (r < 0) + return log_oom(); + + local = ll; + + if (!machine_name_is_valid(local)) { + log_error("Local image name '%s' is not valid.", local); + return -EINVAL; + } + + if (!arg_force) { + r = image_find(local, NULL); + if (r < 0) + return log_error_errno(r, "Failed to check whether image '%s' exists: %m", local); + else if (r > 0) { + log_error_errno(EEXIST, "Image '%s' already exists.", local); + return -EEXIST; + } + } + } else + local = "imported"; + + if (path) { + open_fd = open(path, O_RDONLY|O_CLOEXEC|O_NOCTTY); + if (open_fd < 0) + return log_error_errno(errno, "Failed to open raw image to import: %m"); + + fd = open_fd; + + log_info("Importing '%s', saving as '%s'.", path, local); + } else { + _cleanup_free_ char *pretty = NULL; + + fd = STDIN_FILENO; + + (void) readlink_malloc("/proc/self/fd/0", &pretty); + log_info("Importing '%s', saving as '%s'.", pretty, local); + } + + r = sd_event_default(&event); + if (r < 0) + return log_error_errno(r, "Failed to allocate event loop: %m"); + + assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGTERM, SIGINT, -1) >= 0); + (void) sd_event_add_signal(event, NULL, SIGTERM, interrupt_signal_handler, NULL); + (void) sd_event_add_signal(event, NULL, SIGINT, interrupt_signal_handler, NULL); + + r = raw_import_new(&import, event, arg_image_root, on_raw_finished, event); + if (r < 0) + return log_error_errno(r, "Failed to allocate importer: %m"); + + r = raw_import_start(import, fd, local, arg_force, arg_read_only); + if (r < 0) + return log_error_errno(r, "Failed to import image: %m"); + + r = sd_event_loop(event); + if (r < 0) + return log_error_errno(r, "Failed to run event loop: %m"); + + log_info("Exiting."); + return -r; +} + +static int help(int argc, char *argv[], void *userdata) { + + printf("%s [OPTIONS...] {COMMAND} ...\n\n" + "Import container or virtual machine images.\n\n" + " -h --help Show this help\n" + " --version Show package version\n" + " --force Force creation of image\n" + " --image-root=PATH Image root directory\n" + " --read-only Create a read-only image\n\n" + "Commands:\n" + " tar FILE [NAME] Import a TAR image\n" + " raw FILE [NAME] Import a RAW image\n", + program_invocation_short_name); + + return 0; +} + +static int parse_argv(int argc, char *argv[]) { + + enum { + ARG_VERSION = 0x100, + ARG_FORCE, + ARG_IMAGE_ROOT, + ARG_READ_ONLY, + }; + + static const struct option options[] = { + { "help", no_argument, NULL, 'h' }, + { "version", no_argument, NULL, ARG_VERSION }, + { "force", no_argument, NULL, ARG_FORCE }, + { "image-root", required_argument, NULL, ARG_IMAGE_ROOT }, + { "read-only", no_argument, NULL, ARG_READ_ONLY }, + {} + }; + + int c; + + assert(argc >= 0); + assert(argv); + + while ((c = getopt_long(argc, argv, "h", options, NULL)) >= 0) + + switch (c) { + + case 'h': + return help(0, NULL, NULL); + + case ARG_VERSION: + return version(); + + case ARG_FORCE: + arg_force = true; + break; + + case ARG_IMAGE_ROOT: + arg_image_root = optarg; + break; + + case ARG_READ_ONLY: + arg_read_only = true; + break; + + case '?': + return -EINVAL; + + default: + assert_not_reached("Unhandled option"); + } + + return 1; +} + +static int import_main(int argc, char *argv[]) { + + static const Verb verbs[] = { + { "help", VERB_ANY, VERB_ANY, 0, help }, + { "tar", 2, 3, 0, import_tar }, + { "raw", 2, 3, 0, import_raw }, + {} + }; + + return dispatch_verb(argc, argv, verbs, NULL); +} + +int main(int argc, char *argv[]) { + int r; + + setlocale(LC_ALL, ""); + log_parse_environment(); + log_open(); + + r = parse_argv(argc, argv); + if (r <= 0) + goto finish; + + (void) ignore_signals(SIGPIPE, -1); + + r = import_main(argc, argv); + +finish: + return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS; +} -- cgit v1.2.3-54-g00ecf