86d30d756a
Rather than just use d.getVar(X), use the more explict d.getVar(X, False) since at some point in the future, having the default of expansion would be nice. This is the first step towards that. This patch was mostly made using the command: sed -e 's:\(getVar([^,()]*\)\s*):\1, False):g' -i `grep -ril getVar *` (From OE-Core rev: ab7c1d239b122c8e549e8112c88fd46c9e2b061b) Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
268 lines
12 KiB
Text
268 lines
12 KiB
Text
# This class is used to help the alternatives system which is useful when
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# multiple sources provide same command. You can use update-alternatives
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# command directly in your recipe, but in most cases this class simplifies
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# that job.
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#
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# To use this class a number of variables should be defined:
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#
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# List all of the alternatives needed by a package:
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# ALTERNATIVE_<pkg> = "name1 name2 name3 ..."
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#
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# i.e. ALTERNATIVE_busybox = "sh sed test bracket"
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#
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# The pathname of the link
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# ALTERNATIVE_LINK_NAME[name] = "target"
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#
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# This is the name of the binary once it's been installed onto the runtime.
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# This name is global to all split packages in this recipe, and should match
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# other recipes with the same functionality.
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# i.e. ALTERNATIVE_LINK_NAME[bracket] = "/usr/bin/["
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#
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# NOTE: If ALTERNATIVE_LINK_NAME is not defined, it defaults to ${bindir}/name
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#
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# The default link to create for all targets
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# ALTERNATIVE_TARGET = "target"
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#
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# This is useful in a multicall binary case
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# i.e. ALTERNATIVE_TARGET = "/bin/busybox"
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#
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# A non-default link to create for a target
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# ALTERNATIVE_TARGET[name] = "target"
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#
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# This is the name of the binary as it's been install by do_install
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# i.e. ALTERNATIVE_TARGET[sh] = "/bin/bash"
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#
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# A package specific link for a target
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# ALTERNATIVE_TARGET_<pkg>[name] = "target"
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#
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# This is useful when a recipe provides multiple alternatives for the
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# same item.
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#
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# NOTE: If ALTERNATIVE_TARGET is not defined, it will inherit the value
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# from ALTERNATIVE_LINK_NAME.
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#
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# NOTE: If the ALTERNATIVE_LINK_NAME and ALTERNATIVE_TARGET are the same,
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# ALTERNATIVE_TARGET will have '.{BPN}' appended to it. If the file
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# referenced has not been renamed, it will also be renamed. (This avoids
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# the need to rename alternative files in the do_install step, but still
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# supports it if necessary for some reason.)
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#
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# The default priority for any alternatives
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# ALTERNATIVE_PRIORITY = "priority"
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#
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# i.e. default is ALTERNATIVE_PRIORITY = "10"
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#
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# The non-default priority for a specific target
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# ALTERNATIVE_PRIORITY[name] = "priority"
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#
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# The package priority for a specific target
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# ALTERNATIVE_PRIORITY_<pkg>[name] = "priority"
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ALTERNATIVE_PRIORITY = "10"
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# We need special processing for vardeps because it can not work on
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# modified flag values. So we agregate the flags into a new variable
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# and include that vairable in the set.
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UPDALTVARS = "ALTERNATIVE ALTERNATIVE_LINK_NAME ALTERNATIVE_TARGET ALTERNATIVE_PRIORITY"
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def gen_updatealternativesvardeps(d):
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pkgs = (d.getVar("PACKAGES", True) or "").split()
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vars = (d.getVar("UPDALTVARS", True) or "").split()
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# First compute them for non_pkg versions
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for v in vars:
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for flag in (d.getVarFlags(v) or {}):
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if flag == "doc" or flag == "vardeps" or flag == "vardepsexp":
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continue
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d.appendVar('%s_VARDEPS' % (v), ' %s:%s' % (flag, d.getVarFlag(v, flag, False)))
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for p in pkgs:
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for v in vars:
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for flag in (d.getVarFlags("%s_%s" % (v,p)) or {}):
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if flag == "doc" or flag == "vardeps" or flag == "vardepsexp":
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continue
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d.appendVar('%s_VARDEPS_%s' % (v,p), ' %s:%s' % (flag, d.getVarFlag('%s_%s' % (v,p), flag, False)))
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def ua_extend_depends(d):
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if not 'virtual/update-alternatives' in d.getVar('PROVIDES', True):
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d.appendVar('DEPENDS', ' virtual/${MLPREFIX}update-alternatives')
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python __anonymous() {
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# Update Alternatives only works on target packages...
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if bb.data.inherits_class('native', d) or \
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bb.data.inherits_class('cross', d) or bb.data.inherits_class('crosssdk', d) or \
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bb.data.inherits_class('cross-canadian', d):
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return
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# compute special vardeps
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gen_updatealternativesvardeps(d)
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# extend the depends to include virtual/update-alternatives
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ua_extend_depends(d)
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}
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def gen_updatealternativesvars(d):
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ret = []
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pkgs = (d.getVar("PACKAGES", True) or "").split()
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vars = (d.getVar("UPDALTVARS", True) or "").split()
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for v in vars:
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ret.append(v + "_VARDEPS")
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for p in pkgs:
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for v in vars:
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ret.append(v + "_" + p)
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ret.append(v + "_VARDEPS_" + p)
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return " ".join(ret)
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# Now the new stuff, we use a custom function to generate the right values
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populate_packages[vardeps] += "${UPDALTVARS} ${@gen_updatealternativesvars(d)}"
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# We need to do the rename after the image creation step, but before
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# the split and strip steps.. packagecopy seems to be the earliest reasonable
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# place.
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python perform_packagecopy_append () {
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# Check for deprecated usage...
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pn = d.getVar('BPN', True)
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if d.getVar('ALTERNATIVE_LINKS', True) != None:
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bb.fatal('%s: Use of ALTERNATIVE_LINKS/ALTERNATIVE_PATH/ALTERNATIVE_NAME is no longer supported, please convert to the updated syntax, see update-alternatives.bbclass for more info.' % pn)
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# Do actual update alternatives processing
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pkgdest = d.getVar('PKGD', True)
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for pkg in (d.getVar('PACKAGES', True) or "").split():
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# If the src == dest, we know we need to rename the dest by appending ${BPN}
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link_rename = {}
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for alt_name in (d.getVar('ALTERNATIVE_%s' % pkg, True) or "").split():
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alt_link = d.getVarFlag('ALTERNATIVE_LINK_NAME', alt_name, True)
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if not alt_link:
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alt_link = "%s/%s" % (d.getVar('bindir', True), alt_name)
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d.setVarFlag('ALTERNATIVE_LINK_NAME', alt_name, alt_link)
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alt_target = d.getVarFlag('ALTERNATIVE_TARGET_%s' % pkg, alt_name, True) or d.getVarFlag('ALTERNATIVE_TARGET', alt_name, True)
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alt_target = alt_target or d.getVar('ALTERNATIVE_TARGET_%s' % pkg, True) or d.getVar('ALTERNATIVE_TARGET', True) or alt_link
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# Sometimes alt_target is specified as relative to the link name.
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alt_target = os.path.join(os.path.dirname(alt_link), alt_target)
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# If the link and target are the same name, we need to rename the target.
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if alt_link == alt_target:
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src = '%s/%s' % (pkgdest, alt_target)
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alt_target_rename = '%s.%s' % (alt_target, pn)
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dest = '%s/%s' % (pkgdest, alt_target_rename)
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if os.path.lexists(dest):
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bb.note('%s: Already renamed: %s' % (pn, alt_target_rename))
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elif os.path.lexists(src):
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if os.path.islink(src):
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# Delay rename of links
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link_rename[alt_target] = alt_target_rename
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else:
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bb.note('%s: Rename %s -> %s' % (pn, alt_target, alt_target_rename))
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os.rename(src, dest)
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else:
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bb.warn("%s: alternative target (%s or %s) does not exist, skipping..." % (pn, alt_target, alt_target_rename))
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continue
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d.setVarFlag('ALTERNATIVE_TARGET_%s' % pkg, alt_name, alt_target_rename)
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# Process delayed link names
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# Do these after other renames so we can correct broken links
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for alt_target in link_rename:
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src = '%s/%s' % (pkgdest, alt_target)
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dest = '%s/%s' % (pkgdest, link_rename[alt_target])
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link = os.readlink(src)
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link_target = oe.path.realpath(src, pkgdest, True)
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if os.path.lexists(link_target):
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# Ok, the link_target exists, we can rename
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bb.note('%s: Rename (link) %s -> %s' % (pn, alt_target, link_rename[alt_target]))
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os.rename(src, dest)
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else:
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# Try to resolve the broken link to link.${BPN}
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link_maybe = '%s.%s' % (os.readlink(src), pn)
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if os.path.lexists(os.path.join(os.path.dirname(src), link_maybe)):
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# Ok, the renamed link target exists.. create a new link, and remove the original
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bb.note('%s: Creating new link %s -> %s' % (pn, link_rename[alt_target], link_maybe))
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os.symlink(link_maybe, dest)
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os.unlink(src)
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else:
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bb.warn('%s: Unable to resolve dangling symlink: %s' % (pn, alt_target))
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}
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PACKAGESPLITFUNCS_prepend = "populate_packages_updatealternatives "
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python populate_packages_updatealternatives () {
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pn = d.getVar('BPN', True)
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# Do actual update alternatives processing
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pkgdest = d.getVar('PKGD', True)
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for pkg in (d.getVar('PACKAGES', True) or "").split():
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# Create post install/removal scripts
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alt_setup_links = ""
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alt_remove_links = ""
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for alt_name in (d.getVar('ALTERNATIVE_%s' % pkg, True) or "").split():
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alt_link = d.getVarFlag('ALTERNATIVE_LINK_NAME', alt_name, True)
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alt_target = d.getVarFlag('ALTERNATIVE_TARGET_%s' % pkg, alt_name, True) or d.getVarFlag('ALTERNATIVE_TARGET', alt_name, True)
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alt_target = alt_target or d.getVar('ALTERNATIVE_TARGET_%s' % pkg, True) or d.getVar('ALTERNATIVE_TARGET', True) or alt_link
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# Sometimes alt_target is specified as relative to the link name.
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alt_target = os.path.join(os.path.dirname(alt_link), alt_target)
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alt_priority = d.getVarFlag('ALTERNATIVE_PRIORITY_%s' % pkg, alt_name, True) or d.getVarFlag('ALTERNATIVE_PRIORITY', alt_name, True)
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alt_priority = alt_priority or d.getVar('ALTERNATIVE_PRIORITY_%s' % pkg, True) or d.getVar('ALTERNATIVE_PRIORITY', True)
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# This shouldn't trigger, as it should have been resolved earlier!
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if alt_link == alt_target:
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bb.note('alt_link == alt_target: %s == %s -- correcting, this should not happen!' % (alt_link, alt_target))
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alt_target = '%s.%s' % (alt_target, pn)
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if not os.path.lexists('%s/%s' % (pkgdest, alt_target)):
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bb.warn('%s: NOT adding alternative provide %s: %s does not exist' % (pn, alt_link, alt_target))
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continue
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# Default to generate shell script.. eventually we may want to change this...
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alt_target = os.path.normpath(alt_target)
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alt_setup_links += '\tupdate-alternatives --install %s %s %s %s\n' % (alt_link, alt_name, alt_target, alt_priority)
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alt_remove_links += '\tupdate-alternatives --remove %s %s\n' % (alt_name, alt_target)
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if alt_setup_links:
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# RDEPENDS setup
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provider = d.getVar('VIRTUAL-RUNTIME_update-alternatives', True)
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if provider:
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#bb.note('adding runtime requirement for update-alternatives for %s' % pkg)
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d.appendVar('RDEPENDS_%s' % pkg, ' ' + d.getVar('MLPREFIX', False) + provider)
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bb.note('adding update-alternatives calls to postinst/prerm for %s' % pkg)
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bb.note('%s' % alt_setup_links)
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postinst = d.getVar('pkg_postinst_%s' % pkg, True) or '#!/bin/sh\n'
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postinst += alt_setup_links
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d.setVar('pkg_postinst_%s' % pkg, postinst)
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bb.note('%s' % alt_remove_links)
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prerm = d.getVar('pkg_prerm_%s' % pkg, True) or '#!/bin/sh\n'
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prerm += alt_remove_links
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d.setVar('pkg_prerm_%s' % pkg, prerm)
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}
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python package_do_filedeps_append () {
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pn = d.getVar('BPN', True)
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pkgdest = d.getVar('PKGDEST', True)
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for pkg in packages.split():
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for alt_name in (d.getVar('ALTERNATIVE_%s' % pkg, True) or "").split():
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alt_link = d.getVarFlag('ALTERNATIVE_LINK_NAME', alt_name, True)
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alt_target = d.getVarFlag('ALTERNATIVE_TARGET_%s' % pkg, alt_name, True) or d.getVarFlag('ALTERNATIVE_TARGET', alt_name, True)
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alt_target = alt_target or d.getVar('ALTERNATIVE_TARGET_%s' % pkg, True) or d.getVar('ALTERNATIVE_TARGET', True) or alt_link
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if alt_link == alt_target:
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bb.warn('alt_link == alt_target: %s == %s' % (alt_link, alt_target))
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alt_target = '%s.%s' % (alt_target, pn)
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if not os.path.lexists('%s/%s/%s' % (pkgdest, pkg, alt_target)):
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continue
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# Add file provide
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trans_target = oe.package.file_translate(alt_target)
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d.appendVar('FILERPROVIDES_%s_%s' % (trans_target, pkg), " " + alt_link)
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if not trans_target in (d.getVar('FILERPROVIDESFLIST_%s' % pkg, True) or ""):
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d.appendVar('FILERPROVIDESFLIST_%s' % pkg, " " + trans_target)
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}
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