[Libguestfs] [PATCH 3/6] lib: Move guestfs_int_download_to_tmp and remove inspect.c.

Move the last remaining function ‘guestfs_int_download_to_tmp’ to lib/inspect-icon.c (the main, but not only user of this function). Then remove lib/inspect.c entirely. This is not quite code motion because I updated the comment for the function to reflect what it does in reality. --- docs/C_SOURCE_FILES | 1 - lib/Makefile.am | 1 - lib/inspect-icon.c | 74 +++++++++++++++++++++++++++++++++++- lib/inspect.c | 106 ---------------------------------------------------- po/POTFILES | 1 - 5 files changed, 73 insertions(+), 110 deletions(-) diff --git a/docs/C_SOURCE_FILES b/docs/C_SOURCE_FILES index 386df6d9a..2b947a81c 100644 --- a/docs/C_SOURCE_FILES +++ b/docs/C_SOURCE_FILES @@ -313,7 +313,6 @@ lib/handle.c lib/info.c lib/inspect-apps.c lib/inspect-icon.c -lib/inspect.c lib/journal.c lib/launch-direct.c lib/launch-libvirt.c diff --git a/lib/Makefile.am b/lib/Makefile.am index 677180636..a1d8ee70e 100644 --- a/lib/Makefile.am +++ b/lib/Makefile.am @@ -93,7 +93,6 @@ libguestfs_la_SOURCES = \ guid.c \ handle.c \ info.c \ - inspect.c \ inspect-apps.c \ inspect-icon.c \ journal.c \ diff --git a/lib/inspect-icon.c b/lib/inspect-icon.c index f4f5f0660..c45761041 100644 --- a/lib/inspect-icon.c +++ b/lib/inspect-icon.c @@ -20,8 +20,11 @@ #include <stdio.h> #include <stdlib.h> -#include <unistd.h> +#include <inttypes.h> #include <string.h> +#include <unistd.h> +#include <fcntl.h> +#include <libintl.h> #include <sys/wait.h> #include "guestfs.h" @@ -644,3 +647,72 @@ case_sensitive_path_silently (guestfs_h *g, const char *path) return ret; } + +/** + * Download a guest file to a local temporary file. The file is + * cached in the temporary directory using C<basename>, and is not + * downloaded again. + * + * The name of the temporary (downloaded) file is returned. The + * caller must free the pointer, but does I<not> need to delete the + * temporary file. It will be deleted when the handle is closed. + * + * Refuse to download the guest file if it is larger than C<max_size>. + * On this and other errors, C<NULL> is returned. + * + * XXX Prior to commit 65cfecb0f5344ec92d3f0d3c2ec0538b6b2726e2 this + * function used different basenames for each inspection root. After + * this commit icons probably won't work properly. Needs fixing. + */ +char * +guestfs_int_download_to_tmp (guestfs_h *g, + const char *filename, + const char *basename, uint64_t max_size) +{ + char *r; + int fd; + char devfd[32]; + int64_t size; + + if (asprintf (&r, "%s/%s", g->tmpdir, basename) == -1) { + perrorf (g, "asprintf"); + return NULL; + } + + /* Check size of remote file. */ + size = guestfs_filesize (g, filename); + if (size == -1) + /* guestfs_filesize failed and has already set error in handle */ + goto error; + if ((uint64_t) size > max_size) { + error (g, _("size of %s is unreasonably large (%" PRIi64 " bytes)"), + filename, size); + goto error; + } + + fd = open (r, O_WRONLY|O_CREAT|O_TRUNC|O_NOCTTY|O_CLOEXEC, 0600); + if (fd == -1) { + perrorf (g, "open: %s", r); + goto error; + } + + snprintf (devfd, sizeof devfd, "/dev/fd/%d", fd); + + if (guestfs_download (g, filename, devfd) == -1) { + unlink (r); + close (fd); + goto error; + } + + if (close (fd) == -1) { + perrorf (g, "close: %s", r); + unlink (r); + goto error; + } + + return r; + + error: + free (r); + return NULL; +} diff --git a/lib/inspect.c b/lib/inspect.c deleted file mode 100644 index eb53edf32..000000000 --- a/lib/inspect.c +++ /dev/null @@ -1,106 +0,0 @@ -/* libguestfs - * Copyright (C) 2010-2012 Red Hat Inc. - * - * This library 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 of the License, or (at your option) any later version. - * - * This library 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 this library; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA - */ - -#include <config.h> - -#include <stdio.h> -#include <stdlib.h> -#include <inttypes.h> -#include <unistd.h> -#include <fcntl.h> -#include <string.h> -#include <sys/stat.h> -#include <libintl.h> -#include <assert.h> - -#ifdef HAVE_ENDIAN_H -#include <endian.h> -#endif - -#include "ignore-value.h" - -#include "guestfs.h" -#include "guestfs-internal.h" -#include "guestfs-internal-actions.h" - -/** - * Download a guest file to a local temporary file. The file is - * cached in the temporary directory, and is not downloaded again. - * - * The name of the temporary (downloaded) file is returned. The - * caller must free the pointer, but does I<not> need to delete the - * temporary file. It will be deleted when the handle is closed. - * - * Refuse to download the guest file if it is larger than C<max_size>. - * On this and other errors, C<NULL> is returned. - * - * There is actually one cache per C<struct inspect_fs *> in order to - * handle the case of multiple roots. - */ -char * -guestfs_int_download_to_tmp (guestfs_h *g, - const char *filename, - const char *basename, uint64_t max_size) -{ - char *r; - int fd; - char devfd[32]; - int64_t size; - - if (asprintf (&r, "%s/%s", g->tmpdir, basename) == -1) { - perrorf (g, "asprintf"); - return NULL; - } - - /* Check size of remote file. */ - size = guestfs_filesize (g, filename); - if (size == -1) - /* guestfs_filesize failed and has already set error in handle */ - goto error; - if ((uint64_t) size > max_size) { - error (g, _("size of %s is unreasonably large (%" PRIi64 " bytes)"), - filename, size); - goto error; - } - - fd = open (r, O_WRONLY|O_CREAT|O_TRUNC|O_NOCTTY|O_CLOEXEC, 0600); - if (fd == -1) { - perrorf (g, "open: %s", r); - goto error; - } - - snprintf (devfd, sizeof devfd, "/dev/fd/%d", fd); - - if (guestfs_download (g, filename, devfd) == -1) { - unlink (r); - close (fd); - goto error; - } - - if (close (fd) == -1) { - perrorf (g, "close: %s", r); - unlink (r); - goto error; - } - - return r; - - error: - free (r); - return NULL; -} diff --git a/po/POTFILES b/po/POTFILES index 182c80bbd..7d58151b3 100644 --- a/po/POTFILES +++ b/po/POTFILES @@ -376,7 +376,6 @@ lib/handle.c lib/info.c lib/inspect-apps.c lib/inspect-icon.c -lib/inspect.c lib/journal.c lib/launch-direct.c lib/launch-libvirt.c -- 2.13.2