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BEGIN {
COUNT = split(ENVIRON["SYMBOLS"], SYMBOLS);
}
{
for (x in SYMBOLS) {
sym_regex = "^" SYMBOLS[x] "(@|$)"
if ($8 ~ sym_regex) {
split($8, symbol_array, /@|@@/);
SYMBOL_LIST[symbol_array[1]] = SYMBOL_LIST[symbol_array[1]] " " $8;
}
}
}
END {
printf("#ifndef __symbols_h\n");
printf("#define __symbols_h\n\n");
# We use the order in SYMBOLS, as some wrappers depends on others ...
for (i = 1; i <= COUNT; i++) {
sym_index = SYMBOLS[i];
split(SYMBOL_LIST[sym_index], sym_full_names);
for (x in sym_full_names) {
split(sym_full_names[x], symbol_array, /@|@@/);
# Defualt symbol have '@@' and not '@', so name it by
# prepending '__' rather than the symbol version so
# that we know what the name is in libsandbox.c ...
# Also do this for non-versioned libc's ...
if (sym_full_names[x] ~ /@@/ || !symbol_array[2]) {
sym_real_name = "__" sym_index;
} else {
sym_real_name = sym_full_names[x];
gsub(/@|\./, "_", sym_real_name);
}
printf("#define symname_%s \"%s\"\n", sym_real_name, sym_index);
# We handle non-versioned libc's by setting symver_*
# to NULL ...
if (!symbol_array[2])
printf("#define symver_%s NULL\n", sym_real_name);
else
printf("#define symver_%s \"%s\"\n", sym_real_name,
symbol_array[2]);
printf("%s_decl(%s);\n", sym_index, sym_real_name);
if (symbol_array[2]) {
# Only add symbol versions for versioned libc's
if (sym_full_names[x] ~ /@@/)
printf("default_symbol_version(%s, %s, %s);\n",
sym_real_name, sym_index, symbol_array[2]);
else
printf("symbol_version(%s, %s, %s);\n",
sym_real_name, sym_index, symbol_array[2]);
} else {
# For non-versioned libc's we use strong aliases
printf("strong_alias(%s, %s);\n", sym_real_name,
sym_index);
}
printf("\n");
}
}
printf("#endif /* __symbols_h */\n");
}
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