sstate: Handle sstate filenames longer than 255 characters

Many filesystems can't cope with filenames longer that 255 characters.
Add code to detect this and truncate non-essential elements of the filename
to stay within the limit.

[YOCTO #13268]

(From OE-Core rev: 90cc3d1ed1a12294a2d3ac97c1ba528ab315605d)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Richard Purdie
2020-01-05 14:49:03 +00:00
parent 443654351b
commit b8025e9720

View File

@@ -7,11 +7,28 @@ def generate_sstatefn(spec, hash, taskname, siginfo, d):
if taskname is None:
return ""
extension = ".tgz"
# 8 chars reserved for siginfo
limit = 254 - 8
if siginfo:
limit = 254
extension = ".tgz.siginfo"
if not hash:
hash = "INVALID"
return hash[:2] + "/" + hash[2:4] + "/" + spec + hash + "_" + taskname + extension
fn = spec + hash + "_" + taskname + extension
# If the filename is too long, attempt to reduce it
if len(fn) > limit:
components = spec.split(":")
# Fields 0,5,6 are mandatory, 1 is most useful, 2,3,4 are just for information
# 7 is for the separators
avail = (254 - len(hash + "_" + taskname + extension) - len(components[0]) - len(components[1]) - len(components[5]) - len(components[6]) - 7) / 3
components[2] = components[2][:avail]
components[3] = components[3][:avail]
components[4] = components[4][:avail]
spec = ":".join(components)
fn = spec + hash + "_" + taskname + extension
if len(fn) > limit:
bb.fatal("Unable to reduce sstate name to less than 255 chararacters")
return hash[:2] + "/" + hash[2:4] + "/" + fn
SSTATE_PKGARCH = "${PACKAGE_ARCH}"
SSTATE_PKGSPEC = "sstate:${PN}:${PACKAGE_ARCH}${TARGET_VENDOR}-${TARGET_OS}:${PV}:${PR}:${SSTATE_PKGARCH}:${SSTATE_VERSION}:"