Patrick Williams | c124f4f | 2015-09-15 14:41:29 -0500 | [diff] [blame] | 1 | #!/bin/sh |
| 2 | ### BEGIN INIT INFO |
| 3 | # Provides: volatile |
| 4 | # Required-Start: $local_fs |
| 5 | # Required-Stop: $local_fs |
| 6 | # Default-Start: S |
| 7 | # Default-Stop: |
| 8 | # Short-Description: Populate the volatile filesystem |
| 9 | ### END INIT INFO |
| 10 | |
| 11 | # Get ROOT_DIR |
Andrew Geissler | 635e0e4 | 2020-08-21 15:58:33 -0500 | [diff] [blame] | 12 | DIRNAME="$(dirname "$0")" |
| 13 | ROOT_DIR="$(echo "$DIRNAME" | sed -ne 's:/etc/.*::p')" |
Patrick Williams | c124f4f | 2015-09-15 14:41:29 -0500 | [diff] [blame] | 14 | |
Andrew Geissler | 635e0e4 | 2020-08-21 15:58:33 -0500 | [diff] [blame] | 15 | [ -e "${ROOT_DIR}/etc/default/rcS" ] && . "${ROOT_DIR}/etc/default/rcS" |
Patrick Williams | c124f4f | 2015-09-15 14:41:29 -0500 | [diff] [blame] | 16 | # When running populate-volatile.sh at rootfs time, disable cache. |
| 17 | [ -n "$ROOT_DIR" ] && VOLATILE_ENABLE_CACHE=no |
| 18 | # If rootfs is read-only, disable cache. |
| 19 | [ "$ROOTFS_READ_ONLY" = "yes" ] && VOLATILE_ENABLE_CACHE=no |
| 20 | |
| 21 | CFGDIR="${ROOT_DIR}/etc/default/volatiles" |
| 22 | TMPROOT="${ROOT_DIR}/var/volatile/tmp" |
| 23 | COREDEF="00_core" |
| 24 | |
| 25 | [ "${VERBOSE}" != "no" ] && echo "Populating volatile Filesystems." |
| 26 | |
| 27 | create_file() { |
Brad Bishop | d7bf8c1 | 2018-02-25 22:55:05 -0500 | [diff] [blame] | 28 | EXEC="" |
Andrew Geissler | 635e0e4 | 2020-08-21 15:58:33 -0500 | [diff] [blame] | 29 | if [ -z "$2" ]; then |
Brad Bishop | d7bf8c1 | 2018-02-25 22:55:05 -0500 | [diff] [blame] | 30 | EXEC=" |
| 31 | touch \"$1\"; |
| 32 | " |
Andrew Geissler | 635e0e4 | 2020-08-21 15:58:33 -0500 | [diff] [blame] | 33 | else |
Brad Bishop | d7bf8c1 | 2018-02-25 22:55:05 -0500 | [diff] [blame] | 34 | EXEC=" |
| 35 | cp \"$2\" \"$1\"; |
| 36 | " |
Andrew Geissler | 635e0e4 | 2020-08-21 15:58:33 -0500 | [diff] [blame] | 37 | fi |
Patrick Williams | c124f4f | 2015-09-15 14:41:29 -0500 | [diff] [blame] | 38 | EXEC=" |
Brad Bishop | d7bf8c1 | 2018-02-25 22:55:05 -0500 | [diff] [blame] | 39 | ${EXEC} |
Patrick Williams | 213cb26 | 2021-08-07 19:21:33 -0500 | [diff] [blame^] | 40 | chown ${TUSER}:${TGROUP} $1 || echo \"Failed to set owner -${TUSER}- for -$1-.\"; |
| 41 | chmod ${TMODE} $1 || echo \"Failed to set mode -${TMODE}- for -$1-.\" " |
Patrick Williams | c124f4f | 2015-09-15 14:41:29 -0500 | [diff] [blame] | 42 | |
| 43 | test "$VOLATILE_ENABLE_CACHE" = yes && echo "$EXEC" >> /etc/volatile.cache.build |
| 44 | |
Andrew Geissler | 635e0e4 | 2020-08-21 15:58:33 -0500 | [diff] [blame] | 45 | if [ -e "$1" ]; then |
Patrick Williams | c124f4f | 2015-09-15 14:41:29 -0500 | [diff] [blame] | 46 | [ "${VERBOSE}" != "no" ] && echo "Target already exists. Skipping." |
Andrew Geissler | 635e0e4 | 2020-08-21 15:58:33 -0500 | [diff] [blame] | 47 | else |
Patrick Williams | c124f4f | 2015-09-15 14:41:29 -0500 | [diff] [blame] | 48 | if [ -z "$ROOT_DIR" ]; then |
Andrew Geissler | 635e0e4 | 2020-08-21 15:58:33 -0500 | [diff] [blame] | 49 | eval "$EXEC" |
Patrick Williams | c124f4f | 2015-09-15 14:41:29 -0500 | [diff] [blame] | 50 | else |
| 51 | # Creating some files at rootfs time may fail and should fail, |
| 52 | # but these failures should not be logged to make sure the do_rootfs |
| 53 | # process doesn't fail. This does no harm, as this script will |
| 54 | # run on target to set up the correct files and directories. |
Andrew Geissler | 635e0e4 | 2020-08-21 15:58:33 -0500 | [diff] [blame] | 55 | eval "$EXEC" > /dev/null 2>&1 |
Patrick Williams | c124f4f | 2015-09-15 14:41:29 -0500 | [diff] [blame] | 56 | fi |
Andrew Geissler | 635e0e4 | 2020-08-21 15:58:33 -0500 | [diff] [blame] | 57 | fi |
Patrick Williams | c124f4f | 2015-09-15 14:41:29 -0500 | [diff] [blame] | 58 | } |
| 59 | |
| 60 | mk_dir() { |
| 61 | EXEC=" |
| 62 | mkdir -p \"$1\"; |
Patrick Williams | 213cb26 | 2021-08-07 19:21:33 -0500 | [diff] [blame^] | 63 | chown ${TUSER}:${TGROUP} $1 || echo \"Failed to set owner -${TUSER}- for -$1-.\"; |
| 64 | chmod ${TMODE} $1 || echo \"Failed to set mode -${TMODE}- for -$1-.\" " |
Patrick Williams | c124f4f | 2015-09-15 14:41:29 -0500 | [diff] [blame] | 65 | |
| 66 | test "$VOLATILE_ENABLE_CACHE" = yes && echo "$EXEC" >> /etc/volatile.cache.build |
Andrew Geissler | 635e0e4 | 2020-08-21 15:58:33 -0500 | [diff] [blame] | 67 | if [ -e "$1" ]; then |
Patrick Williams | c124f4f | 2015-09-15 14:41:29 -0500 | [diff] [blame] | 68 | [ "${VERBOSE}" != "no" ] && echo "Target already exists. Skipping." |
Andrew Geissler | 635e0e4 | 2020-08-21 15:58:33 -0500 | [diff] [blame] | 69 | else |
Patrick Williams | c124f4f | 2015-09-15 14:41:29 -0500 | [diff] [blame] | 70 | if [ -z "$ROOT_DIR" ]; then |
Andrew Geissler | 635e0e4 | 2020-08-21 15:58:33 -0500 | [diff] [blame] | 71 | eval "$EXEC" |
Patrick Williams | c124f4f | 2015-09-15 14:41:29 -0500 | [diff] [blame] | 72 | else |
| 73 | # For the same reason with create_file(), failures should |
| 74 | # not be logged. |
Andrew Geissler | 635e0e4 | 2020-08-21 15:58:33 -0500 | [diff] [blame] | 75 | eval "$EXEC" > /dev/null 2>&1 |
Patrick Williams | c124f4f | 2015-09-15 14:41:29 -0500 | [diff] [blame] | 76 | fi |
Andrew Geissler | 635e0e4 | 2020-08-21 15:58:33 -0500 | [diff] [blame] | 77 | fi |
Patrick Williams | c124f4f | 2015-09-15 14:41:29 -0500 | [diff] [blame] | 78 | } |
| 79 | |
| 80 | link_file() { |
| 81 | EXEC=" |
| 82 | if [ -L \"$2\" ]; then |
Brad Bishop | 79641f2 | 2019-09-10 07:20:22 -0400 | [diff] [blame] | 83 | [ \"\$(readlink \"$2\")\" != \"$1\" ] && { rm -f \"$2\"; ln -sf \"$1\" \"$2\"; }; |
Patrick Williams | c124f4f | 2015-09-15 14:41:29 -0500 | [diff] [blame] | 84 | elif [ -d \"$2\" ]; then |
| 85 | if awk '\$2 == \"$2\" {exit 1}' /proc/mounts; then |
| 86 | cp -a $2/* $1 2>/dev/null; |
| 87 | cp -a $2/.[!.]* $1 2>/dev/null; |
| 88 | rm -rf \"$2\"; |
| 89 | ln -sf \"$1\" \"$2\"; |
| 90 | fi |
| 91 | else |
| 92 | ln -sf \"$1\" \"$2\"; |
| 93 | fi |
| 94 | " |
| 95 | |
| 96 | test "$VOLATILE_ENABLE_CACHE" = yes && echo " $EXEC" >> /etc/volatile.cache.build |
| 97 | |
| 98 | if [ -z "$ROOT_DIR" ]; then |
Andrew Geissler | 635e0e4 | 2020-08-21 15:58:33 -0500 | [diff] [blame] | 99 | eval "$EXEC" |
Patrick Williams | c124f4f | 2015-09-15 14:41:29 -0500 | [diff] [blame] | 100 | else |
| 101 | # For the same reason with create_file(), failures should |
| 102 | # not be logged. |
Andrew Geissler | 635e0e4 | 2020-08-21 15:58:33 -0500 | [diff] [blame] | 103 | eval "$EXEC" > /dev/null 2>&1 |
Patrick Williams | c124f4f | 2015-09-15 14:41:29 -0500 | [diff] [blame] | 104 | fi |
| 105 | } |
| 106 | |
| 107 | check_requirements() { |
| 108 | cleanup() { |
| 109 | rm "${TMP_INTERMED}" |
| 110 | rm "${TMP_DEFINED}" |
| 111 | rm "${TMP_COMBINED}" |
| 112 | } |
| 113 | |
| 114 | CFGFILE="$1" |
Patrick Williams | c124f4f | 2015-09-15 14:41:29 -0500 | [diff] [blame] | 115 | |
| 116 | TMP_INTERMED="${TMPROOT}/tmp.$$" |
| 117 | TMP_DEFINED="${TMPROOT}/tmpdefined.$$" |
| 118 | TMP_COMBINED="${TMPROOT}/tmpcombined.$$" |
| 119 | |
Andrew Geissler | 635e0e4 | 2020-08-21 15:58:33 -0500 | [diff] [blame] | 120 | sed 's@\(^:\)*:.*@\1@' "${ROOT_DIR}/etc/passwd" | sort | uniq > "${TMP_DEFINED}" |
| 121 | grep -v "^#" "${CFGFILE}" | cut -s -d " " -f 2 > "${TMP_INTERMED}" |
Patrick Williams | c124f4f | 2015-09-15 14:41:29 -0500 | [diff] [blame] | 122 | cat "${TMP_DEFINED}" "${TMP_INTERMED}" | sort | uniq > "${TMP_COMBINED}" |
Andrew Geissler | 635e0e4 | 2020-08-21 15:58:33 -0500 | [diff] [blame] | 123 | NR_DEFINED_USERS="$(wc -l < "${TMP_DEFINED}")" |
| 124 | NR_COMBINED_USERS="$(wc -l < "${TMP_COMBINED}")" |
Patrick Williams | c124f4f | 2015-09-15 14:41:29 -0500 | [diff] [blame] | 125 | |
| 126 | [ "${NR_DEFINED_USERS}" -ne "${NR_COMBINED_USERS}" ] && { |
| 127 | echo "Undefined users:" |
| 128 | diff "${TMP_DEFINED}" "${TMP_COMBINED}" | grep "^>" |
| 129 | cleanup |
| 130 | return 1 |
| 131 | } |
| 132 | |
| 133 | |
Andrew Geissler | 635e0e4 | 2020-08-21 15:58:33 -0500 | [diff] [blame] | 134 | sed 's@\(^:\)*:.*@\1@' "${ROOT_DIR}/etc/group" | sort | uniq > "${TMP_DEFINED}" |
| 135 | grep -v "^#" "${CFGFILE}" | cut -s -d " " -f 3 > "${TMP_INTERMED}" |
Patrick Williams | c124f4f | 2015-09-15 14:41:29 -0500 | [diff] [blame] | 136 | cat "${TMP_DEFINED}" "${TMP_INTERMED}" | sort | uniq > "${TMP_COMBINED}" |
| 137 | |
Andrew Geissler | 635e0e4 | 2020-08-21 15:58:33 -0500 | [diff] [blame] | 138 | NR_DEFINED_GROUPS="$(wc -l < "${TMP_DEFINED}")" |
| 139 | NR_COMBINED_GROUPS="$(wc -l < "${TMP_COMBINED}")" |
Patrick Williams | c124f4f | 2015-09-15 14:41:29 -0500 | [diff] [blame] | 140 | |
| 141 | [ "${NR_DEFINED_GROUPS}" -ne "${NR_COMBINED_GROUPS}" ] && { |
| 142 | echo "Undefined groups:" |
| 143 | diff "${TMP_DEFINED}" "${TMP_COMBINED}" | grep "^>" |
| 144 | cleanup |
| 145 | return 1 |
| 146 | } |
| 147 | |
| 148 | # Add checks for required directories here |
| 149 | |
| 150 | cleanup |
| 151 | return 0 |
| 152 | } |
| 153 | |
| 154 | apply_cfgfile() { |
| 155 | CFGFILE="$1" |
Brad Bishop | 1a4b7ee | 2018-12-16 17:11:34 -0800 | [diff] [blame] | 156 | SKIP_REQUIREMENTS="$2" |
Patrick Williams | c124f4f | 2015-09-15 14:41:29 -0500 | [diff] [blame] | 157 | |
Brad Bishop | 1a4b7ee | 2018-12-16 17:11:34 -0800 | [diff] [blame] | 158 | [ "${VERBOSE}" != "no" ] && echo "Applying ${CFGFILE}" |
| 159 | |
Andrew Geissler | 635e0e4 | 2020-08-21 15:58:33 -0500 | [diff] [blame] | 160 | [ "${SKIP_REQUIREMENTS}" = "yes" ] || check_requirements "${CFGFILE}" || { |
Patrick Williams | c124f4f | 2015-09-15 14:41:29 -0500 | [diff] [blame] | 161 | echo "Skipping ${CFGFILE}" |
| 162 | return 1 |
| 163 | } |
| 164 | |
Andrew Geissler | 635e0e4 | 2020-08-21 15:58:33 -0500 | [diff] [blame] | 165 | sed 's/#.*//' "${CFGFILE}" | \ |
| 166 | while read -r TTYPE TUSER TGROUP TMODE TNAME TLTARGET; do |
Brad Bishop | 6e60e8b | 2018-02-01 10:27:11 -0500 | [diff] [blame] | 167 | test -z "${TLTARGET}" && continue |
Patrick Williams | c124f4f | 2015-09-15 14:41:29 -0500 | [diff] [blame] | 168 | TNAME=${ROOT_DIR}${TNAME} |
| 169 | [ "${VERBOSE}" != "no" ] && echo "Checking for -${TNAME}-." |
| 170 | |
| 171 | [ "${TTYPE}" = "l" ] && { |
| 172 | TSOURCE="$TLTARGET" |
| 173 | [ "${VERBOSE}" != "no" ] && echo "Creating link -${TNAME}- pointing to -${TSOURCE}-." |
| 174 | link_file "${TSOURCE}" "${TNAME}" |
| 175 | continue |
| 176 | } |
| 177 | |
Patrick Williams | d8c66bc | 2016-06-20 12:57:21 -0500 | [diff] [blame] | 178 | [ "${TTYPE}" = "b" ] && { |
| 179 | TSOURCE="$TLTARGET" |
| 180 | [ "${VERBOSE}" != "no" ] && echo "Creating mount-bind -${TNAME}- from -${TSOURCE}-." |
| 181 | mount --bind "${TSOURCE}" "${TNAME}" |
| 182 | EXEC=" |
| 183 | mount --bind \"${TSOURCE}\" \"${TNAME}\"" |
| 184 | test "$VOLATILE_ENABLE_CACHE" = yes && echo "$EXEC" >> /etc/volatile.cache.build |
| 185 | continue |
| 186 | } |
| 187 | |
Patrick Williams | c124f4f | 2015-09-15 14:41:29 -0500 | [diff] [blame] | 188 | [ -L "${TNAME}" ] && { |
| 189 | [ "${VERBOSE}" != "no" ] && echo "Found link." |
Andrew Geissler | 635e0e4 | 2020-08-21 15:58:33 -0500 | [diff] [blame] | 190 | NEWNAME=$(ls -l "${TNAME}" | sed -e 's/^.*-> \(.*\)$/\1/') |
| 191 | if echo "${NEWNAME}" | grep -v "^/" >/dev/null; then |
| 192 | TNAME="$(echo "${TNAME}" | sed -e 's@\(.*\)/.*@\1@')/${NEWNAME}" |
Patrick Williams | c124f4f | 2015-09-15 14:41:29 -0500 | [diff] [blame] | 193 | [ "${VERBOSE}" != "no" ] && echo "Converted relative linktarget to absolute path -${TNAME}-." |
Andrew Geissler | 635e0e4 | 2020-08-21 15:58:33 -0500 | [diff] [blame] | 194 | else |
Patrick Williams | c124f4f | 2015-09-15 14:41:29 -0500 | [diff] [blame] | 195 | TNAME="${NEWNAME}" |
| 196 | [ "${VERBOSE}" != "no" ] && echo "Using absolute link target -${TNAME}-." |
Andrew Geissler | 635e0e4 | 2020-08-21 15:58:33 -0500 | [diff] [blame] | 197 | fi |
Patrick Williams | c124f4f | 2015-09-15 14:41:29 -0500 | [diff] [blame] | 198 | } |
| 199 | |
| 200 | case "${TTYPE}" in |
| 201 | "f") [ "${VERBOSE}" != "no" ] && echo "Creating file -${TNAME}-." |
Brad Bishop | d7bf8c1 | 2018-02-25 22:55:05 -0500 | [diff] [blame] | 202 | TSOURCE="$TLTARGET" |
| 203 | [ "${TSOURCE}" = "none" ] && TSOURCE="" |
Patrick Williams | 213cb26 | 2021-08-07 19:21:33 -0500 | [diff] [blame^] | 204 | create_file "${TNAME}" "${TSOURCE}" |
Patrick Williams | c124f4f | 2015-09-15 14:41:29 -0500 | [diff] [blame] | 205 | ;; |
| 206 | "d") [ "${VERBOSE}" != "no" ] && echo "Creating directory -${TNAME}-." |
| 207 | mk_dir "${TNAME}" |
| 208 | # Add check to see if there's an entry in fstab to mount. |
| 209 | ;; |
| 210 | *) [ "${VERBOSE}" != "no" ] && echo "Invalid type -${TTYPE}-." |
| 211 | continue |
| 212 | ;; |
| 213 | esac |
| 214 | done |
| 215 | return 0 |
| 216 | } |
| 217 | |
| 218 | clearcache=0 |
| 219 | exec 9</proc/cmdline |
Andrew Geissler | 635e0e4 | 2020-08-21 15:58:33 -0500 | [diff] [blame] | 220 | while read -r line <&9 |
Patrick Williams | c124f4f | 2015-09-15 14:41:29 -0500 | [diff] [blame] | 221 | do |
| 222 | case "$line" in |
| 223 | *clearcache*) clearcache=1 |
| 224 | ;; |
| 225 | *) continue |
| 226 | ;; |
| 227 | esac |
| 228 | done |
| 229 | exec 9>&- |
| 230 | |
Andrew Geissler | 635e0e4 | 2020-08-21 15:58:33 -0500 | [diff] [blame] | 231 | if test -e "${ROOT_DIR}/etc/volatile.cache" -a "$VOLATILE_ENABLE_CACHE" = "yes" -a "x$1" != "xupdate" -a "x$clearcache" = "x0" |
Patrick Williams | c124f4f | 2015-09-15 14:41:29 -0500 | [diff] [blame] | 232 | then |
Andrew Geissler | 635e0e4 | 2020-08-21 15:58:33 -0500 | [diff] [blame] | 233 | sh "${ROOT_DIR}/etc/volatile.cache" |
Patrick Williams | c124f4f | 2015-09-15 14:41:29 -0500 | [diff] [blame] | 234 | else |
Andrew Geissler | 635e0e4 | 2020-08-21 15:58:33 -0500 | [diff] [blame] | 235 | rm -f "${ROOT_DIR}/etc/volatile.cache" "${ROOT_DIR}/etc/volatile.cache.build" |
Brad Bishop | 1a4b7ee | 2018-12-16 17:11:34 -0800 | [diff] [blame] | 236 | |
| 237 | # Apply the core file with out checking requirements. ${TMPROOT} is |
| 238 | # needed by check_requirements but is setup by this file, so it must be |
| 239 | # processed first and without being checked. |
| 240 | [ -e "${CFGDIR}/${COREDEF}" ] && apply_cfgfile "${CFGDIR}/${COREDEF}" "yes" |
| 241 | |
| 242 | # Fast path: check_requirements is slow and most of the time doesn't |
| 243 | # find any problems. If there are a lot of config files, it is much |
| 244 | # faster to to concatenate them all together and process them once to |
| 245 | # avoid the overhead of calling check_requirements repeatedly |
| 246 | TMP_FILE="${TMPROOT}/tmp_volatile.$$" |
| 247 | rm -f "$TMP_FILE" |
| 248 | |
Andrew Geissler | 635e0e4 | 2020-08-21 15:58:33 -0500 | [diff] [blame] | 249 | CFGFILES="$(ls -1 "${CFGDIR}" | grep -v "^${COREDEF}\$" | sort)" |
Brad Bishop | 1a4b7ee | 2018-12-16 17:11:34 -0800 | [diff] [blame] | 250 | for file in ${CFGFILES}; do |
| 251 | cat "${CFGDIR}/${file}" >> "$TMP_FILE" |
Patrick Williams | c124f4f | 2015-09-15 14:41:29 -0500 | [diff] [blame] | 252 | done |
| 253 | |
Brad Bishop | 1a4b7ee | 2018-12-16 17:11:34 -0800 | [diff] [blame] | 254 | if check_requirements "$TMP_FILE" |
| 255 | then |
| 256 | apply_cfgfile "$TMP_FILE" "yes" |
| 257 | else |
| 258 | # Slow path: One or more config files failed requirements. |
| 259 | # Process each one individually so the offending one can be |
| 260 | # skipped |
| 261 | for file in ${CFGFILES}; do |
| 262 | apply_cfgfile "${CFGDIR}/${file}" |
| 263 | done |
| 264 | fi |
| 265 | rm "$TMP_FILE" |
| 266 | |
Andrew Geissler | 635e0e4 | 2020-08-21 15:58:33 -0500 | [diff] [blame] | 267 | [ -e "${ROOT_DIR}/etc/volatile.cache.build" ] && sync && mv "${ROOT_DIR}/etc/volatile.cache.build" "${ROOT_DIR}/etc/volatile.cache" |
Patrick Williams | c124f4f | 2015-09-15 14:41:29 -0500 | [diff] [blame] | 268 | fi |
| 269 | |
| 270 | if [ -z "${ROOT_DIR}" ] && [ -f /etc/ld.so.cache ] && [ ! -f /var/run/ld.so.cache ] |
| 271 | then |
| 272 | ln -s /etc/ld.so.cache /var/run/ld.so.cache |
| 273 | fi |