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[image] Add "--timeout" parameter to image downloading commands 

iPXE will detect timeout failures in several situations: network
link-up, DHCP, TCP connection attempts, unacknowledged TCP data, etc.
This does not cover all possible circumstances.  For example, if a
connection to a web server is successfully established and the web
server acknowledges the HTTP request but never sends any data in
response, then no timeout will be triggered.  There is no timeout
defined within the HTTP specifications, and the underlying TCP
connection will not generate a timeout since it has no way to know
that the HTTP layer is expecting to receive data from the server.

Add a "--timeout" parameter to "imgfetch", "chain", etc.  If no
progress is made (i.e. no data is downloaded) within the timeout
period, then the download will be aborted.

Signed-off-by: Michael Brown <mcb30@ipxe.org>
This commit is contained in:
Michael Brown 2014-03-10 13:32:39 +00:00
parent b850a6be28
commit 3f43c1354e
8 changed files with 44 additions and 21 deletions
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5
src/arch/i386/interface/syslinux/comboot_call.c
View File

@ -188,7 +188,8 @@ static int comboot_fetch_kernel ( char *kernel_file, char *cmdline ) {
DBG ( "COMBOOT: fetching initrd '%s'\n", initrd_file );
/* Fetch initrd */
if ( ( rc = imgdownload_string ( initrd_file, &initrd ) ) != 0){
if ( ( rc = imgdownload_string ( initrd_file, 0,
&initrd ) ) != 0 ) {
DBG ( "COMBOOT: could not fetch initrd: %s\n",
strerror ( rc ) );
return rc;
@ -202,7 +203,7 @@ static int comboot_fetch_kernel ( char *kernel_file, char *cmdline ) {
DBG ( "COMBOOT: fetching kernel '%s'\n", kernel_file );
/* Fetch kernel */
if ( ( rc = imgdownload_string ( kernel_file, &kernel ) ) != 0 ) {
if ( ( rc = imgdownload_string ( kernel_file, 0, &kernel ) ) != 0 ) {
DBG ( "COMBOOT: could not fetch kernel: %s\n",
strerror ( rc ) );
return rc;

2
src/hci/commands/console_cmd.c
View File

@ -92,7 +92,7 @@ static int console_exec ( int argc, char **argv ) {
if ( opts.picture ) {
/* Acquire image */
if ( ( rc = imgacquire ( opts.picture, &image ) ) != 0 )
if ( ( rc = imgacquire ( opts.picture, 0, &image ) ) != 0 )
goto err_acquire;
/* Convert to pixel buffer */

2
src/hci/commands/digest_cmd.c
View File

@ -77,7 +77,7 @@ static int digest_exec ( int argc, char **argv,
for ( i = optind ; i < argc ; i++ ) {
/* Acquire image */
if ( ( rc = imgacquire ( argv[i], &image ) ) != 0 )
if ( ( rc = imgacquire ( argv[i], 0, &image ) ) != 0 )
continue;
offset = 0;
len = image->len;

18
src/hci/commands/image_cmd.c
View File

@ -40,6 +40,8 @@ FILE_LICENCE ( GPL2_OR_LATER );
struct imgsingle_options {
/** Image name */
char *name;
/** Download timeout */
unsigned long timeout;
/** Replace image */
int replace;
/** Free image after execution */
@ -49,13 +51,17 @@ struct imgsingle_options {
/** "img{single}" option list */
static union {
/* "imgexec" takes all three options */
struct option_descriptor imgexec[3];
/* Other "img{single}" commands take only --name and --autofree */
struct option_descriptor imgsingle[2];
struct option_descriptor imgexec[4];
/* Other "img{single}" commands take only --name, --timeout,
* and --autofree
*/
struct option_descriptor imgsingle[3];
} opts = {
.imgexec = {
OPTION_DESC ( "name", 'n', required_argument,
struct imgsingle_options, name, parse_string ),
OPTION_DESC ( "timeout", 't', required_argument,
struct imgsingle_options, timeout, parse_timeout),
OPTION_DESC ( "autofree", 'a', no_argument,
struct imgsingle_options, autofree, parse_flag ),
OPTION_DESC ( "replace", 'r', no_argument,
@ -68,7 +74,8 @@ struct imgsingle_descriptor {
/** Command descriptor */
struct command_descriptor *cmd;
/** Function to use to acquire the image */
int ( * acquire ) ( const char *name, struct image **image );
int ( * acquire ) ( const char *name, unsigned long timeout,
struct image **image );
/** Pre-action to take upon image, or NULL */
void ( * preaction ) ( struct image *image );
/** Action to take upon image, or NULL */
@ -114,7 +121,8 @@ static int imgsingle_exec ( int argc, char **argv,
/* Acquire the image */
if ( name_uri ) {
if ( ( rc = desc->acquire ( name_uri, &image ) ) != 0 )
if ( ( rc = desc->acquire ( name_uri, opts.timeout,
&image ) ) != 0 )
goto err_acquire;
} else {
image = image_find_selected();

9
src/hci/commands/image_trust_cmd.c
View File

@ -86,6 +86,8 @@ struct imgverify_options {
char *signer;
/** Keep signature after verification */
int keep;
/** Download timeout */
unsigned long timeout;
};
/** "imgverify" option list */
@ -94,6 +96,8 @@ static struct option_descriptor imgverify_opts[] = {
struct imgverify_options, signer, parse_string ),
OPTION_DESC ( "keep", 'k', no_argument,
struct imgverify_options, keep, parse_flag ),
OPTION_DESC ( "timeout", 't', required_argument,
struct imgverify_options, timeout, parse_timeout),
};
/** "imgverify" command descriptor */
@ -127,11 +131,12 @@ static int imgverify_exec ( int argc, char **argv ) {
signature_name_uri = argv[ optind + 1 ];
/* Acquire the image */
if ( ( rc = imgacquire ( image_name_uri, &image ) ) != 0 )
if ( ( rc = imgacquire ( image_name_uri, opts.timeout, &image ) ) != 0 )
goto err_acquire_image;
/* Acquire the signature image */
if ( ( rc = imgacquire ( signature_name_uri, &signature ) ) != 0 )
if ( ( rc = imgacquire ( signature_name_uri, opts.timeout,
&signature ) ) != 0 )
goto err_acquire_signature;
/* Verify image */

9
src/include/usr/imgmgmt.h
View File

@ -11,9 +11,12 @@ FILE_LICENCE ( GPL2_OR_LATER );
#include <ipxe/image.h>
extern int imgdownload ( struct uri *uri, struct image **image );
extern int imgdownload_string ( const char *uri_string, struct image **image );
extern int imgacquire ( const char *name, struct image **image );
extern int imgdownload ( struct uri *uri, unsigned long timeout,
struct image **image );
extern int imgdownload_string ( const char *uri_string, unsigned long timeout,
struct image **image );
extern int imgacquire ( const char *name, unsigned long timeout,
struct image **image );
extern void imgstat ( struct image *image );
#endif /* _USR_IMGMGMT_H */

2
src/usr/autoboot.c
View File

@ -165,7 +165,7 @@ int uriboot ( struct uri *filename, struct uri *root_path, int drive,
/* Attempt filename boot if applicable */
if ( filename ) {
if ( ( rc = imgdownload ( filename, &image ) ) != 0 )
if ( ( rc = imgdownload ( filename, 0, &image ) ) != 0 )
goto err_download;
image->flags |= IMAGE_AUTO_UNREGISTER;
if ( ( rc = image_exec ( image ) ) != 0 ) {

18
src/usr/imgmgmt.c
View File

@ -40,10 +40,12 @@ FILE_LICENCE ( GPL2_OR_LATER );
* Download a new image
*
* @v uri URI
* @v timeout Download timeout
* @v image Image to fill in
* @ret rc Return status code
*/
int imgdownload ( struct uri *uri, struct image **image ) {
int imgdownload ( struct uri *uri, unsigned long timeout,
struct image **image ) {
const char *password;
char *uri_string_redacted;
int rc;
@ -80,7 +82,7 @@ int imgdownload ( struct uri *uri, struct image **image ) {
}
/* Wait for download to complete */
if ( ( rc = monojob_wait ( uri_string_redacted, 0 ) ) != 0 )
if ( ( rc = monojob_wait ( uri_string_redacted, timeout ) ) != 0 )
goto err_monojob_wait;
/* Register image */
@ -105,17 +107,19 @@ int imgdownload ( struct uri *uri, struct image **image ) {
* Download a new image
*
* @v uri_string URI string
* @v timeout Download timeout
* @v image Image to fill in
* @ret rc Return status code
*/
int imgdownload_string ( const char *uri_string, struct image **image ) {
int imgdownload_string ( const char *uri_string, unsigned long timeout,
struct image **image ) {
struct uri *uri;
int rc;
if ( ! ( uri = parse_uri ( uri_string ) ) )
return -ENOMEM;
rc = imgdownload ( uri, image );
rc = imgdownload ( uri, timeout, image );
uri_put ( uri );
return rc;
@ -125,10 +129,12 @@ int imgdownload_string ( const char *uri_string, struct image **image ) {
* Acquire an image
*
* @v name_uri Name or URI string
* @v timeout Download timeout
* @v image Image to fill in
* @ret rc Return status code
*/
int imgacquire ( const char *name_uri, struct image **image ) {
int imgacquire ( const char *name_uri, unsigned long timeout,
struct image **image ) {
/* If we already have an image with the specified name, use it */
*image = find_image ( name_uri );
@ -136,7 +142,7 @@ int imgacquire ( const char *name_uri, struct image **image ) {
return 0;
/* Otherwise, download a new image */
return imgdownload_string ( name_uri, image );
return imgdownload_string ( name_uri, timeout, image );
}
/**