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Subject[PATCH v7 4/5] file2alias.c: Implement builtin.alias generation
From
This populates the mod->modalias_buf with aliases for built-in modules
when modpost is run against vmlinuz.o.

Signed-off-by: Allen Webb <allenwebb@google.com>
---
scripts/mod/file2alias.c | 55 +++++++++++++++++++++++++++-------------
1 file changed, 38 insertions(+), 17 deletions(-)

diff --git a/scripts/mod/file2alias.c b/scripts/mod/file2alias.c
index 458e41ae0f5f1..8ed08154b3d81 100644
--- a/scripts/mod/file2alias.c
+++ b/scripts/mod/file2alias.c
@@ -232,6 +232,8 @@ static void do_usb_entry(void *symval,
add_wildcard(alias);
buf_printf(&mod->dev_table_buf,
"MODULE_ALIAS(\"%s\");\n", alias);
+ if (mod->builtin_name)
+ buf_printf(&mod->modalias_buf, "alias %s %s\n", alias, mod->builtin_name);
}

/* Handles increment/decrement of BCD formatted integers */
@@ -376,9 +378,13 @@ static void do_of_entry_multi(void *symval, struct module *mod)
*tmp = '_';

buf_printf(&mod->dev_table_buf, "MODULE_ALIAS(\"%s\");\n", alias);
+ if (mod->builtin_name)
+ buf_printf(&mod->modalias_buf, "alias %s %s\n", alias, mod->builtin_name);
strcat(alias, "C");
add_wildcard(alias);
buf_printf(&mod->dev_table_buf, "MODULE_ALIAS(\"%s\");\n", alias);
+ if (mod->builtin_name)
+ buf_printf(&mod->modalias_buf, "alias %s %s\n", alias, mod->builtin_name);
}

static void do_of_table(void *symval, unsigned long size,
@@ -610,12 +616,18 @@ static void do_pnp_device_entry(void *symval, unsigned long size,

buf_printf(&mod->dev_table_buf,
"MODULE_ALIAS(\"pnp:d%s*\");\n", *id);
+ if (mod->builtin_name)
+ buf_printf(&mod->modalias_buf, "alias pnp:d%s* %s\n",
+ *id, mod->builtin_name);

/* fix broken pnp bus lowercasing */
for (j = 0; j < sizeof(acpi_id); j++)
acpi_id[j] = toupper((*id)[j]);
buf_printf(&mod->dev_table_buf,
"MODULE_ALIAS(\"acpi*:%s:*\");\n", acpi_id);
+ if (mod->builtin_name)
+ buf_printf(&mod->modalias_buf, "alias acpi*:%s:* %s\n",
+ acpi_id, mod->builtin_name);
}
}

@@ -662,19 +674,25 @@ static void do_pnp_card_entries(void *symval, unsigned long size,
}

/* add an individual alias for every device entry */
- if (!dup) {
- char acpi_id[PNP_ID_LEN];
- int k;
-
- buf_printf(&mod->dev_table_buf,
- "MODULE_ALIAS(\"pnp:d%s*\");\n", id);
-
- /* fix broken pnp bus lowercasing */
- for (k = 0; k < sizeof(acpi_id); k++)
- acpi_id[k] = toupper(id[k]);
- buf_printf(&mod->dev_table_buf,
- "MODULE_ALIAS(\"acpi*:%s:*\");\n", acpi_id);
- }
+ if (dup)
+ continue;
+ char acpi_id[PNP_ID_LEN];
+ int k;
+
+ buf_printf(&mod->dev_table_buf,
+ "MODULE_ALIAS(\"pnp:d%s*\");\n", id);
+ if (mod->builtin_name)
+ buf_printf(&mod->modalias_buf, "alias pnp:d%s* %s\n",
+ id, mod->builtin_name);
+
+ /* fix broken pnp bus lowercasing */
+ for (k = 0; k < sizeof(acpi_id); k++)
+ acpi_id[k] = toupper(id[k]);
+ buf_printf(&mod->dev_table_buf,
+ "MODULE_ALIAS(\"acpi*:%s:*\");\n", acpi_id);
+ if (mod->builtin_name)
+ buf_printf(&mod->modalias_buf, "alias acpi*:%s:* %s\n",
+ acpi_id, mod->builtin_name);
}
}
}
@@ -1476,10 +1494,13 @@ static void do_table(void *symval, unsigned long size,
size -= id_size;

for (i = 0; i < size; i += id_size) {
- if (do_entry(mod->name, symval+i, alias)) {
- buf_printf(&mod->dev_table_buf,
- "MODULE_ALIAS(\"%s\");\n", alias);
- }
+ if (!do_entry(mod->name, symval + i, alias))
+ continue;
+ buf_printf(&mod->dev_table_buf, "MODULE_ALIAS(\"%s\");\n", alias);
+ if (!mod->builtin_name)
+ continue;
+ buf_printf(&mod->modalias_buf, "alias %s %s\n", alias,
+ mod->builtin_name);
}
}

--
2.37.3
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