Increase path for the ELF interpreter

Modern OS like NixOS can have long paths for everything. Increase the size of
the buffer for reading in the interpreter. This does not address adding more
interpreters to accomodate more distributions. But make it possible.

Author: stevegrubb

ChangeLog

@@ -3,7 +3,7 @@
 - Update the trust-db filter rules to add and drop some things
 - Add new magic detections and drop a lot of old rules
 - Performance improvement looking up mime-types
-- Various clode cleanups, hardening, and performance optimizing
+- Various code cleanups, hardening, and performance optimizing
 - Classify ELF files with an unknown interpreter as application/x-bad-elf
 - Consolidate the fapolicyd-cli return codes
 

src/library/file.c

@@ -1403,7 +1403,7 @@ uint32_t gather_elf(int fd, off_t size)
 			// Obtain program interpreter from ELF object file
 			if (ph_tbl[i].p_type == PT_INTERP) {
 				uint32_t len;
-				char interp[65];
+				char interp[385];
 				uint32_t filesz = ph_tbl[i].p_filesz;
 				uint32_t offset = ph_tbl[i].p_offset;
 
@@ -1412,7 +1412,7 @@ uint32_t gather_elf(int fd, off_t size)
 								!= offset)
 					goto err_out32;
 
-				len = (filesz < 65 ? filesz : 65);
+				len = (filesz < 385 ? filesz : 385);
 
 				if ((unsigned int) safe_read(fd, (char *)
 						interp, len) != len)
@@ -1558,7 +1558,7 @@ uint32_t gather_elf(int fd, off_t size)
 			// Obtain program interpreter from ELF object file
 			if (ph_tbl[i].p_type == PT_INTERP) {
 				uint64_t len;
-				char interp[65];
+				char interp[385];
 				uint64_t filesz = ph_tbl[i].p_filesz;
 				uint64_t offset = ph_tbl[i].p_offset;
 
@@ -1567,7 +1567,7 @@ uint32_t gather_elf(int fd, off_t size)
 								!= offset)
 					goto err_out64;
 
-				len = (filesz < 65 ? filesz : 65);
+				len = (filesz < 385 ? filesz : 385);
 
 				if ((unsigned int) safe_read(fd, (char *)
 						interp, len) != len)