postinst_intercept 2.3 KB

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  1. #!/bin/sh
  2. #
  3. # SPDX-License-Identifier: MIT
  4. #
  5. # This script is called from inside postinstall scriptlets at do_rootfs time. It
  6. # actually adds, at the end, the list of packages for which the intercept script
  7. # is valid. Also, if one wants to pass any variables to the intercept script from
  8. # the postinstall itself, they will be added immediately after the shebang line.
  9. #
  10. # Usage: postinst_intercept <intercept_script_name> <package_name> <mlprefix=...> <var1=...> ... <varN=...>
  11. # * intercept_script_name - the name of the intercept script we want to change;
  12. # * package_name - add the package_name to list of packages the intercept script
  13. # is used for;
  14. # * mlprefix=... - this one is needed in order to have separate hooks for multilib.
  15. # * var1=... - var1 will have the value we provide in the intercept script. This
  16. # is useful when we want to pass on variables like ${libdir} to
  17. # the intercept script;
  18. #
  19. [ $# -lt 3 ] && exit 1
  20. intercept_script=$INTERCEPT_DIR/$1 && shift
  21. package_name=$1 && shift
  22. mlprefix=$(echo $1 |sed -ne "s/^mlprefix=\(.*\)-/\1/p") && shift
  23. # if the hook we want to install does not exist, then there's nothing we can do
  24. [ -f "$intercept_script" ] || exit 1
  25. # if the postinstall wanting to install the hook belongs to a multilib package,
  26. # then we'd better have a separate hook for this because the default ${libdir} and
  27. # ${base_libdir} will point to the wrong locations
  28. if [ -n "$mlprefix" ]; then
  29. ml_intercept_script=$intercept_script-$mlprefix
  30. # if the multilib hook does not exist, create it from the default one
  31. if [ ! -f "$ml_intercept_script" ]; then
  32. cp $intercept_script $ml_intercept_script
  33. # clear the ##PKGS: line and the already set variables
  34. [ -x "$ml_intercept_script" ] && sed -i -e "2,$(($#+1)) {/.*/d}" -e "/^##PKGS: .*/d" $ml_intercept_script
  35. fi
  36. intercept_script=$ml_intercept_script
  37. fi
  38. chmod +x "$intercept_script"
  39. pkgs_line=$(grep "##PKGS:" $intercept_script)
  40. if [ -n "$pkgs_line" ]; then
  41. # line exists, add this package to the list only if it's not already there
  42. if [ -z "$(echo "$pkgs_line" | grep " $package_name ")" ]; then
  43. sed -i -e "s/##PKGS:.*/\0${package_name} /" $intercept_script
  44. fi
  45. else
  46. for var in "$@"; do
  47. sed -i -e "\%^#\!/bin/.*sh%a $var" $intercept_script
  48. done
  49. echo "##PKGS: ${package_name} " >> $intercept_script
  50. fi