scripts: modpost: Remove numeric suffix pattern matching

For several years, the pattern "foo$" has effectively been treated as
equivalent to "foo" due to a bug in the (misnamed) helper
number_prefix(). This hasn't been observed to cause any problems, so
remove the broken $ functionality and change all foo$ patterns to foo.

Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

1 files changed, 10 insertions, 39 deletions

diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c
index 5ba203b9eddf..091d90573b63 100644
--- a/scripts/mod/modpost.c
+++ b/scripts/mod/modpost.c
@@ -772,32 +772,10 @@ static const char *sech_name(struct elf_info *elf, Elf_Shdr *sechdr)
                 sechdr->sh_name;
 }
 
-/* if sym is empty or point to a string
- * like ".[0-9]+" then return 1.
- * This is the optional prefix added by ld to some sections
- */
-static int number_prefix(const char *sym)
-{
-        if (*sym++ == '\0')
-                return 1;
-        if (*sym != '.')
-                return 0;
-        do {
-                char c = *sym++;
-                if (c < '0' || c > '9')
-                        return 0;
-        } while (*sym);
-        return 1;
-}
-
 /* The pattern is an array of simple patterns.
  * "foo" will match an exact string equal to "foo"
  * "*foo" will match a string that ends with "foo"
  * "foo*" will match a string that begins with "foo"
- * "foo$" will match a string equal to "foo" or "foo.1"
- *   where the '1' can be any number including several digits.
- *   The $ syntax is for sections where ld append a dot number
- *   to make section name unique.
  */
 static int match(const char *sym, const char * const pat[])
 {
@@ -816,13 +794,6 @@ static int match(const char *sym, const char * const pat[])
                         if (strncmp(sym, p, strlen(p) - 1) == 0)
                                 return 1;
                 }
-                /* "foo$" */
-                else if (*endp == '$') {
-                        if (strncmp(sym, p, strlen(p) - 1) == 0) {
-                                if (number_prefix(sym + strlen(p) - 1))
-                                        return 1;
-                        }
-                }
                 /* no wildcards */
                 else {
                         if (strcmp(p, sym) == 0)
@@ -880,20 +851,20 @@ static void check_section(const char *modname, struct elf_info *elf,
 
 
 #define ALL_INIT_DATA_SECTIONS \
-        ".init.setup$", ".init.rodata$", ".meminit.rodata$", \
-        ".init.data$", ".meminit.data$"
+        ".init.setup", ".init.rodata", ".meminit.rodata", \
+        ".init.data", ".meminit.data"
 #define ALL_EXIT_DATA_SECTIONS \
-        ".exit.data$", ".memexit.data$"
+        ".exit.data", ".memexit.data"
 
 #define ALL_INIT_TEXT_SECTIONS \
-        ".init.text$", ".meminit.text$"
+        ".init.text", ".meminit.text"
 #define ALL_EXIT_TEXT_SECTIONS \
-        ".exit.text$", ".memexit.text$"
+        ".exit.text", ".memexit.text"
 
 #define ALL_PCI_INIT_SECTIONS   \
-        ".pci_fixup_early$", ".pci_fixup_header$", ".pci_fixup_final$", \
-        ".pci_fixup_enable$", ".pci_fixup_resume$", \
-        ".pci_fixup_resume_early$", ".pci_fixup_suspend$"
+        ".pci_fixup_early", ".pci_fixup_header", ".pci_fixup_final", \
+        ".pci_fixup_enable", ".pci_fixup_resume", \
+        ".pci_fixup_resume_early", ".pci_fixup_suspend"
 
 #define ALL_XXXINIT_SECTIONS MEM_INIT_SECTIONS
 #define ALL_XXXEXIT_SECTIONS MEM_EXIT_SECTIONS
@@ -901,8 +872,8 @@ static void check_section(const char *modname, struct elf_info *elf,
 #define ALL_INIT_SECTIONS INIT_SECTIONS, ALL_XXXINIT_SECTIONS
 #define ALL_EXIT_SECTIONS EXIT_SECTIONS, ALL_XXXEXIT_SECTIONS
 
-#define DATA_SECTIONS ".data$", ".data.rel$"
-#define TEXT_SECTIONS ".text$", ".text.unlikely$"
+#define DATA_SECTIONS ".data", ".data.rel"
+#define TEXT_SECTIONS ".text", ".text.unlikely"
 
 #define INIT_SECTIONS      ".init.*"
 #define MEM_INIT_SECTIONS  ".meminit.*"