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https://git.yoctoproject.org/poky
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0b8d5dad9c
After the class changes, absolute symlinks are not being handled correctly by the class file. This adds handling for absolute symlinks to account for the pkgdest directory, removing dangling symlink messages from recipes like bzip2. (From OE-Core rev: ecea2fab2063a3c478a63e62ba0e80305674c5e0) Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
343 lines
14 KiB
Plaintext
343 lines
14 KiB
Plaintext
# 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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#
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#
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# -----
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#
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#
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# The following describes deprecated behavior, using any of the
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# following modes will result in a warning, and eventually an error:
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#
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# There are two basic modes supported: 'single update' and 'batch update'
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#
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# 'single update' is used for a single alternative command, and you're
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# expected to provide at least below keywords:
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#
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# ALTERNATIVE_NAME - the name that the alternative is registered
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# ALTERNATIVE_PATH - the path of installed alternative
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#
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# ALTERNATIVE_PRIORITY and ALTERNATIVE_LINK are optional which have defaults
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# in this class.
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#
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# 'batch update' is used if you have multiple alternatives to be updated.
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# Unlike 'single update', 'batch update' in most times only require two
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# parameters:
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#
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# ALTERNATIVE_LINKS - a list of symbolic links for which you'd like to
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# create alternatives, with space as delimiter, e.g:
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#
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# ALTERNATIVE_LINKS = "${bindir}/cmd1 ${sbindir}/cmd2 ..."
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#
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# ALTERNATIVE_PRIORITY - optional, applies to all
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#
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# To simplify the design, this class has the assumption that for a name
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# listed in ALTERNATIVE_LINKS, say /path/cmd:
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#
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# the name of the alternative would be: cmd
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# the path of installed alternative would be: /path/cmd.${BPN}
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# ${D}/path/cmd will be renamed to ${D}/path/cmd.{BPN} automatically
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# priority will be the same from ALTERNATIVE_PRIORITY
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#
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# If above assumption breaks your requirement, then you still need to use
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# your own update-alternatives command directly.
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# defaults
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ALTERNATIVE_PRIORITY = "10"
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# The following code is deprecated, but included for compatibility with older packages
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def update_alternatives_after_parse(d):
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if bb.data.inherits_class('native', d) or bb.data.inherits_class('nativesdk', d):
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return
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# The following code is deprecated, but included for compatibility with older packages
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pn = d.getVar('BPN', True)
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if d.getVar('ALTERNATIVE_LINKS') != None:
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# Convert old format to new format...
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alt_links = d.getVar('ALTERNATIVE_LINKS', True) or ""
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for alt_link in alt_links.split():
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alt_name = os.path.basename(alt_link)
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alternative = d.getVar('ALTERNATIVE_%s' % pn, True) or ""
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alternative += " " + alt_name
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d.setVar('ALTERNATIVE_%s' % pn, alternative)
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d.setVarFlag('ALTERNATIVE_LINK_NAME', alt_name, alt_link)
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d.setVarFlag('ALTERNATIVE_TARGET', alt_name, alt_link)
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return
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if d.getVar('ALTERNATIVE_NAME') != None or d.getVar('ALTERNATIVE_PATH') != None:
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# Convert old format to new format...
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alt_name = d.getVar('ALTERNATIVE_NAME', True)
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alt_path = d.getVar('ALTERNATIVE_PATH', True)
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alt_link = d.getVar('ALTERNATIVE_LINK', True) or ("%s/%s" % (d.getVar('bindir', True), alt_name))
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if alt_name == None:
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raise bb.build.build.FuncFailed, "%s inherits update-alternatives but doesn't set ALTERNATIVE_NAME" % d.getVar('FILE')
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if alt_path == None:
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raise bb.build.build.FuncFailed, "%s inherits update-alternatives but doesn't set ALTERNATIVE_PATH" % d.getVar('FILE')
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alternative = d.getVar('ALTERNATIVE_%s' % pn, True) or ""
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alternative += " " + alt_name
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# Fix the alt_path if it's relative
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alt_path = os.path.join(os.path.dirname(alt_link), alt_path)
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d.setVar('ALTERNATIVE_%s' % pn, alternative)
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d.setVarFlag('ALTERNATIVE_LINK_NAME', alt_name, alt_link)
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d.setVarFlag('ALTERNATIVE_TARGET', alt_name, alt_path)
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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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python __anonymous() {
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# deprecated stuff...
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update_alternatives_after_parse(d)
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# compute special vardeps
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gen_updatealternativesvardeps(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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# First the deprecated items...
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populate_packages[vardeps] += "ALTERNATIVE_LINKS ALTERNATIVE_NAME ALTERNATIVE_PATH"
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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.warn('%s: Use of ALTERNATIVE_LINKS is deprecated, see update-alternatives.bbclass for more info.' % pn)
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if d.getVar('ALTERNATIVE_NAME', True) != None or d.getVar('ALTERNATIVE_PATH', True) != None:
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bb.warn('%s: Use of ALTERNATIVE_NAME is deprecated, 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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if os.path.isabs(link):
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link_target = pkgdest + os.readlink(src)
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else:
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link_target = os.path.join(os.path.dirname(src), link)
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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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python populate_packages_prepend () {
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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.relpath(alt_target, os.path.dirname(alt_link))
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alt_setup_links += ' update-alternatives --install %s %s %s %s\n' % (alt_link, alt_name, alt_target, alt_priority)
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alt_remove_links += ' update-alternatives --remove %s %s\n' % (alt_name, alt_target)
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if alt_setup_links:
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bb.note('adding update-alternatives calls to postinst/postrm 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 d.getVar('pkg_postinst', 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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postrm = (d.getVar('pkg_postrm_%s' % pkg, True) or d.getVar('pkg_postrm', True)) or '#!/bin/sh\n'
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postrm += alt_remove_links
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d.setVar('pkg_postrm_%s' % pkg, postrm)
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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 = 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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