esp_partition_write/read/erase_range/mmap in partition_linux.c (the
`linux` target backend used by --preview set-target linux / host_test)
validated the requested range with `offset + size > partition->size`.
When `size` is close to SIZE_MAX, this addition wraps around size_t and
can evaluate to a small value, so the check passes even though the
request is far out of bounds. A caller passing e.g.
esp_partition_write(partition, 1, src, SIZE_MAX) sails through both
bounds checks and reaches the byte-copy loop with new_size == SIZE_MAX,
causing out-of-bounds reads/writes far past both the caller's buffer
and the mmap'd emulated-flash file.
Replace all four instances with the overflow-safe form already used by
the other esp_partition backends (partition_target.c,
partition_bootloader.c, partition_tee.c):
`size > partition->size - offset`, which is safe because the preceding
check already guarantees offset <= partition->size.
Signed-off-by: yi chen <94xhn1@gmail.com>
* Users can now use libbsd string.h and sys/cdefs.h functionality
(e.g., strlcpy, containerof) on Linux by just including
string.h or sys/cdefs.h. In other words, the includes are the same
on the Linux target as well as on chips targets (ESP32, etc.).
* libbsd linking is done by the linux component (belongs to common
components) now instead of handling it separately in each component
This fixes the issue that "idf.py partition-table" had to be run
manually in order for the partition table to be generated, when
building for linux target.
Added statistics and wear simulation functions to support migration of
remaining storage related host tests from fixture to linux implementation
of esp_partition.
All the partition handling API functions and data-types were moved from the 'spi_flash' component to the new one named 'esp_partition'. See Storage 5.x migration guide for more details
