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Fix endless loop when trying to add a too large file to CBFS, 

and report the correct error code, and a hopefully helpful
error message.


Signed-off-by: Patrick Georgi <patrick.georgi@coresystems.de>
Acked-by: Stefan Reinauer <stepan@coresystems.de>


git-svn-id: svn://svn.coreboot.org/coreboot/trunk@4692 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
This commit is contained in:
Patrick Georgi 2009-09-30 11:21:18 +00:00
parent 53ad9f585d
commit 56f5fb734b
2 changed files with 37 additions and 32 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
util/cbfstool/cbfstool.c
View File

@ -80,7 +80,8 @@ static int cbfs_add(int argc, char **argv)
}
cbfsfile =
create_cbfs_file(cbfsname, filedata, &filesize, type, &base);
add_file_to_cbfs(cbfsfile, filesize, base);
if (add_file_to_cbfs(cbfsfile, filesize, base))
return 1;
writerom(romname, rom, romsize);
return 0;
}
@ -127,7 +128,8 @@ static int cbfs_add_payload(int argc, char **argv)
cbfsfile =
create_cbfs_file(cbfsname, payload, &filesize,
CBFS_COMPONENT_PAYLOAD, &base);
add_file_to_cbfs(cbfsfile, filesize, base);
if (add_file_to_cbfs(cbfsfile, filesize, base))
return 1;
writerom(romname, rom, romsize);
return 0;
}
@ -175,7 +177,8 @@ static int cbfs_add_stage(int argc, char **argv)
create_cbfs_file(cbfsname, stage, &filesize,
CBFS_COMPONENT_STAGE, &base);
add_file_to_cbfs(cbfsfile, filesize, base);
if (add_file_to_cbfs(cbfsfile, filesize, base))
return 1;
writerom(romname, rom, romsize);
return 0;
}

60
util/cbfstool/common.c
View File

@ -40,7 +40,7 @@ void *loadfile(const char *filename, uint32_t * romsize_p, void *content,
content = malloc(*romsize_p);
if (!content) {
printf("Could not get %d bytes for file %s\n",
*romsize_p, filename);
*romsize_p, filename);
exit(1);
}
} else if (place == SEEK_END)
@ -205,40 +205,42 @@ int add_file_to_cbfs(void *content, uint32_t contentsize, uint32_t location)
dprintf("copying data\n");
memcpy(phys_to_virt(current), content,
contentsize);
break;
return 0;
}
if (location == 0)
continue;
if (location != 0) {
/* CBFS has the constraint that the chain always moves up in memory. so once
we're past the place we seek, we don't need to look any further */
if (current > location) {
printf
("the requested space is not available\n");
return 1;
}
/* CBFS has the constraint that the chain always moves up in memory. so once
we're past the place we seek, we don't need to look any further */
if (current > location) {
printf
("the requested space is not available\n");
return 1;
}
/* Is the requested location inside the current chunk? */
if ((current < location)
&& ((location + contentsize) <= (current + length))) {
/* Split it up. In the next iteration the code will be at the right place. */
dprintf("split up. new length: %x\n",
location - current -
ntohl(thisfile->offset));
thisfile->len =
htonl(location - current -
ntohl(thisfile->offset));
struct cbfs_file *nextfile =
cbfs_create_empty_file(location,
length - (location -
current));
/* Is the requested location inside the current chunk? */
if ((current < location)
&& ((location + contentsize) <=
(current + length))) {
/* Split it up. In the next iteration the code will be at the right place. */
dprintf("split up. new length: %x\n",
location - current -
ntohl(thisfile->offset));
thisfile->len =
htonl(location - current -
ntohl(thisfile->offset));
struct cbfs_file *nextfile =
cbfs_create_empty_file(location,
length -
(location -
current));
}
}
}
current =
ALIGN(current + ntohl(thisfile->len) +
ntohl(thisfile->offset), align);
}
return 0;
printf("Could not add the file to CBFS, it's probably too big.\n");
return 1;
}
/* returns new data block with cbfs_file header, suitable to dump into the ROM. location returns
@ -263,7 +265,7 @@ void *create_cbfs_file(const char *filename, void *data, uint32_t * datasize,
void *newdata = malloc(*datasize + headersize);
if (!newdata) {
printf("Could not get %d bytes for CBFS file.\n", *datasize +
headersize);
headersize);
exit(1);
}
struct cbfs_file *nextfile = (struct cbfs_file *)newdata;
@ -285,7 +287,7 @@ int create_cbfs_image(const char *romfile, uint32_t _romsize,
unsigned char *romarea = malloc(romsize);
if (!romarea) {
printf("Could not get %d bytes of memory for CBFS image.\n",
romsize);
romsize);
exit(1);
}
memset(romarea, 0xff, romsize);