| 1 |
BEGIN {
|
| 2 |
COUNT = split(ENVIRON["SYMBOLS"], SYMBOLS);
|
| 3 |
}
|
| 4 |
|
| 5 |
{
|
| 6 |
for (x in SYMBOLS) {
|
| 7 |
sym_regex = "^" SYMBOLS[x] "(@|$)"
|
| 8 |
if ($8 ~ sym_regex) {
|
| 9 |
split($8, symbol_array, /@|@@/);
|
| 10 |
|
| 11 |
# Don't add local symbols of versioned libc's
|
| 12 |
if (VERSIONED_LIBC && !symbol_array[2])
|
| 13 |
continue;
|
| 14 |
|
| 15 |
# We have a versioned libc
|
| 16 |
if (symbol_array[2] && !VERSIONED_LIBC)
|
| 17 |
VERSIONED_LIBC = 1;
|
| 18 |
|
| 19 |
ADD = 1;
|
| 20 |
# Check that we do not add duplicates
|
| 21 |
for (x in PROCESSED_SYMBOLS) {
|
| 22 |
if (x == $8) {
|
| 23 |
ADD = 0;
|
| 24 |
break;
|
| 25 |
}
|
| 26 |
}
|
| 27 |
|
| 28 |
if (ADD) {
|
| 29 |
SYMBOL_LIST[symbol_array[1]] = SYMBOL_LIST[symbol_array[1]] " " $8;
|
| 30 |
PROCESSED_SYMBOLS[$8] = $8;
|
| 31 |
}
|
| 32 |
}
|
| 33 |
}
|
| 34 |
}
|
| 35 |
|
| 36 |
END {
|
| 37 |
printf("#ifndef __symbols_h\n");
|
| 38 |
printf("#define __symbols_h\n\n");
|
| 39 |
|
| 40 |
# We use the order in SYMBOLS, as some wrappers depends on others ...
|
| 41 |
for (i = 1; i <= COUNT; i++) {
|
| 42 |
sym_index = SYMBOLS[i];
|
| 43 |
split(SYMBOL_LIST[sym_index], sym_full_names);
|
| 44 |
|
| 45 |
for (x in sym_full_names) {
|
| 46 |
split(sym_full_names[x], symbol_array, /@|@@/);
|
| 47 |
|
| 48 |
# Defualt symbol have '@@' and not '@', so name it by
|
| 49 |
# prepending '__' rather than the symbol version so
|
| 50 |
# that we know what the name is in libsandbox.c ...
|
| 51 |
# Also do this for non-versioned libc's ...
|
| 52 |
if (sym_full_names[x] ~ /@@/ || !symbol_array[2]) {
|
| 53 |
sym_real_name = "__" sym_index;
|
| 54 |
} else {
|
| 55 |
sym_real_name = sym_full_names[x];
|
| 56 |
gsub(/@|\./, "_", sym_real_name);
|
| 57 |
}
|
| 58 |
|
| 59 |
printf("#define symname_%s \"%s\"\n", sym_real_name, sym_index);
|
| 60 |
|
| 61 |
# We handle non-versioned libc's by setting symver_*
|
| 62 |
# to NULL ...
|
| 63 |
if (!symbol_array[2])
|
| 64 |
printf("#define symver_%s NULL\n", sym_real_name);
|
| 65 |
else
|
| 66 |
printf("#define symver_%s \"%s\"\n", sym_real_name,
|
| 67 |
symbol_array[2]);
|
| 68 |
|
| 69 |
printf("%s_decl(%s);\n", sym_index, sym_real_name);
|
| 70 |
|
| 71 |
if (symbol_array[2]) {
|
| 72 |
# Only add symbol versions for versioned libc's
|
| 73 |
if (sym_full_names[x] ~ /@@/)
|
| 74 |
printf("default_symbol_version(%s, %s, %s);\n",
|
| 75 |
sym_real_name, sym_index, symbol_array[2]);
|
| 76 |
else
|
| 77 |
printf("symbol_version(%s, %s, %s);\n",
|
| 78 |
sym_real_name, sym_index, symbol_array[2]);
|
| 79 |
} else {
|
| 80 |
# For non-versioned libc's we use strong aliases
|
| 81 |
printf("strong_alias(%s, %s);\n", sym_real_name,
|
| 82 |
sym_index);
|
| 83 |
}
|
| 84 |
|
| 85 |
printf("\n");
|
| 86 |
}
|
| 87 |
}
|
| 88 |
|
| 89 |
printf("#endif /* __symbols_h */\n");
|
| 90 |
}
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