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-rw-r--r--qga/commands-posix.c56
-rw-r--r--qga/commands-win32.c20
-rw-r--r--qga/guest-agent-core.h7
-rw-r--r--qga/installer/qemu-ga.wxs18
-rw-r--r--qga/qapi-schema.json4
5 files changed, 101 insertions, 4 deletions
diff --git a/qga/commands-posix.c b/qga/commands-posix.c
index 0ebd47336a..c2ff97021f 100644
--- a/qga/commands-posix.c
+++ b/qga/commands-posix.c
@@ -216,9 +216,16 @@ void qmp_guest_set_time(bool has_time, int64_t time_ns, Error **errp)
}
}
+typedef enum {
+ RW_STATE_NEW,
+ RW_STATE_READING,
+ RW_STATE_WRITING,
+} RwState;
+
typedef struct GuestFileHandle {
uint64_t id;
FILE *fh;
+ RwState state;
QTAILQ_ENTRY(GuestFileHandle) next;
} GuestFileHandle;
@@ -460,6 +467,17 @@ struct GuestFileRead *qmp_guest_file_read(int64_t handle, bool has_count,
}
fh = gfh->fh;
+
+ /* explicitly flush when switching from writing to reading */
+ if (gfh->state == RW_STATE_WRITING) {
+ int ret = fflush(fh);
+ if (ret == EOF) {
+ error_setg_errno(errp, errno, "failed to flush file");
+ return NULL;
+ }
+ gfh->state = RW_STATE_NEW;
+ }
+
buf = g_malloc0(count+1);
read_count = fread(buf, 1, count, fh);
if (ferror(fh)) {
@@ -473,6 +491,7 @@ struct GuestFileRead *qmp_guest_file_read(int64_t handle, bool has_count,
if (read_count) {
read_data->buf_b64 = g_base64_encode(buf, read_count);
}
+ gfh->state = RW_STATE_READING;
}
g_free(buf);
clearerr(fh);
@@ -496,6 +515,16 @@ GuestFileWrite *qmp_guest_file_write(int64_t handle, const char *buf_b64,
}
fh = gfh->fh;
+
+ if (gfh->state == RW_STATE_READING) {
+ int ret = fseek(fh, 0, SEEK_CUR);
+ if (ret == -1) {
+ error_setg_errno(errp, errno, "failed to seek file");
+ return NULL;
+ }
+ gfh->state = RW_STATE_NEW;
+ }
+
buf = g_base64_decode(buf_b64, &buf_len);
if (!has_count) {
@@ -515,6 +544,7 @@ GuestFileWrite *qmp_guest_file_write(int64_t handle, const char *buf_b64,
write_data = g_new0(GuestFileWrite, 1);
write_data->count = write_count;
write_data->eof = feof(fh);
+ gfh->state = RW_STATE_WRITING;
}
g_free(buf);
clearerr(fh);
@@ -523,25 +553,47 @@ GuestFileWrite *qmp_guest_file_write(int64_t handle, const char *buf_b64,
}
struct GuestFileSeek *qmp_guest_file_seek(int64_t handle, int64_t offset,
- int64_t whence, Error **errp)
+ int64_t whence_code, Error **errp)
{
GuestFileHandle *gfh = guest_file_handle_find(handle, errp);
GuestFileSeek *seek_data = NULL;
FILE *fh;
int ret;
+ int whence;
if (!gfh) {
return NULL;
}
+ /* We stupidly exposed 'whence':'int' in our qapi */
+ switch (whence_code) {
+ case QGA_SEEK_SET:
+ whence = SEEK_SET;
+ break;
+ case QGA_SEEK_CUR:
+ whence = SEEK_CUR;
+ break;
+ case QGA_SEEK_END:
+ whence = SEEK_END;
+ break;
+ default:
+ error_setg(errp, "invalid whence code %"PRId64, whence_code);
+ return NULL;
+ }
+
fh = gfh->fh;
ret = fseek(fh, offset, whence);
if (ret == -1) {
error_setg_errno(errp, errno, "failed to seek file");
+ if (errno == ESPIPE) {
+ /* file is non-seekable, stdio shouldn't be buffering anyways */
+ gfh->state = RW_STATE_NEW;
+ }
} else {
seek_data = g_new0(GuestFileSeek, 1);
seek_data->position = ftell(fh);
seek_data->eof = feof(fh);
+ gfh->state = RW_STATE_NEW;
}
clearerr(fh);
@@ -562,6 +614,8 @@ void qmp_guest_file_flush(int64_t handle, Error **errp)
ret = fflush(fh);
if (ret == EOF) {
error_setg_errno(errp, errno, "failed to flush file");
+ } else {
+ gfh->state = RW_STATE_NEW;
}
}
diff --git a/qga/commands-win32.c b/qga/commands-win32.c
index 41f6dd9fed..0654fe4fe7 100644
--- a/qga/commands-win32.c
+++ b/qga/commands-win32.c
@@ -382,7 +382,7 @@ done:
}
GuestFileSeek *qmp_guest_file_seek(int64_t handle, int64_t offset,
- int64_t whence, Error **errp)
+ int64_t whence_code, Error **errp)
{
GuestFileHandle *gfh;
GuestFileSeek *seek_data;
@@ -390,11 +390,29 @@ GuestFileSeek *qmp_guest_file_seek(int64_t handle, int64_t offset,
LARGE_INTEGER new_pos, off_pos;
off_pos.QuadPart = offset;
BOOL res;
+ int whence;
+
gfh = guest_file_handle_find(handle, errp);
if (!gfh) {
return NULL;
}
+ /* We stupidly exposed 'whence':'int' in our qapi */
+ switch (whence_code) {
+ case QGA_SEEK_SET:
+ whence = SEEK_SET;
+ break;
+ case QGA_SEEK_CUR:
+ whence = SEEK_CUR;
+ break;
+ case QGA_SEEK_END:
+ whence = SEEK_END;
+ break;
+ default:
+ error_setg(errp, "invalid whence code %"PRId64, whence_code);
+ return NULL;
+ }
+
fh = gfh->fh;
res = SetFilePointerEx(fh, off_pos, &new_pos, whence);
if (!res) {
diff --git a/qga/guest-agent-core.h b/qga/guest-agent-core.h
index e92c6abafb..238dc6b08d 100644
--- a/qga/guest-agent-core.h
+++ b/qga/guest-agent-core.h
@@ -15,6 +15,13 @@
#define QGA_READ_COUNT_DEFAULT 4096
+/* Mapping of whence codes used by guest-file-seek. */
+enum {
+ QGA_SEEK_SET = 0,
+ QGA_SEEK_CUR = 1,
+ QGA_SEEK_END = 2,
+};
+
typedef struct GAState GAState;
typedef struct GACommandState GACommandState;
extern GAState *ga_state;
diff --git a/qga/installer/qemu-ga.wxs b/qga/installer/qemu-ga.wxs
index 6804f0279f..9473875723 100644
--- a/qga/installer/qemu-ga.wxs
+++ b/qga/installer/qemu-ga.wxs
@@ -91,6 +91,22 @@
<File Id="qga_vss.tlb" Name="qga-vss.tlb" Source="$(env.BUILD_DIR)/qga/vss-win32/qga-vss.tlb" KeyPath="yes" DiskId="1"/>
</Component>
<?endif?>
+ <?if $(var.Arch) = "32"?>
+ <Component Id="gspawn-helper-console" Guid="{446185B3-87BE-43D2-96B8-0FEFD9E8696D}">
+ <File Id="gspawn-win32-helper-console.exe" Name="gspawn-win32-helper-console.exe" Source="$(var.Mingw_bin)/gspawn-win32-helper-console.exe" KeyPath="yes" DiskId="1"/>
+ </Component>
+ <Component Id="gspawn-helper" Guid="{CD67A5A3-2DB1-4DA1-A67A-8D71E797B466}">
+ <File Id="gspawn-win32-helper.exe" Name="gspawn-win32-helper.exe" Source="$(var.Mingw_bin)/gspawn-win32-helper.exe" KeyPath="yes" DiskId="1"/>
+ </Component>
+ <?endif?>
+ <?if $(var.Arch) = "64"?>
+ <Component Id="gspawn-helper-console" Guid="{9E615A9F-349A-4992-A5C2-C10BAD173660}">
+ <File Id="gspawn-win64-helper-console.exe" Name="gspawn-win64-helper-console.exe" Source="$(var.Mingw_bin)/gspawn-win64-helper-console.exe" KeyPath="yes" DiskId="1"/>
+ </Component>
+ <Component Id="gspawn-helper" Guid="{D201AD22-1846-4E4F-B6E1-C7A908ED2457}">
+ <File Id="gspawn-win64-helper.exe" Name="gspawn-win64-helper.exe" Source="$(var.Mingw_bin)/gspawn-win64-helper.exe" KeyPath="yes" DiskId="1"/>
+ </Component>
+ <?endif?>
<Component Id="iconv" Guid="{35EE3558-D34B-4F0A-B8BD-430FF0775246}">
<File Id="iconv.dll" Name="iconv.dll" Source="$(var.Mingw_bin)/iconv.dll" KeyPath="yes" DiskId="1"/>
</Component>
@@ -148,6 +164,8 @@
<ComponentRef Id="qga_vss_dll" />
<ComponentRef Id="qga_vss_tlb" />
<?endif?>
+ <ComponentRef Id="gspawn-helper-console" />
+ <ComponentRef Id="gspawn-helper" />
<ComponentRef Id="iconv" />
<ComponentRef Id="libgcc_arch_lib" />
<ComponentRef Id="libglib" />
diff --git a/qga/qapi-schema.json b/qga/qapi-schema.json
index 78362e071d..01c9ee48d8 100644
--- a/qga/qapi-schema.json
+++ b/qga/qapi-schema.json
@@ -318,13 +318,13 @@
#
# Seek to a position in the file, as with fseek(), and return the
# current file position afterward. Also encapsulates ftell()'s
-# functionality, just Set offset=0, whence=SEEK_CUR.
+# functionality, with offset=0 and whence=1.
#
# @handle: filehandle returned by guest-file-open
#
# @offset: bytes to skip over in the file stream
#
-# @whence: SEEK_SET, SEEK_CUR, or SEEK_END, as with fseek()
+# @whence: 0 for SEEK_SET, 1 for SEEK_CUR, or 2 for SEEK_END
#
# Returns: @GuestFileSeek on success.
#
generated by cgit v1.2.3 (git 2.26.2) at 2025-01-02 21:45:45 +0000