Import parse_uint() from voreutils. Summarise all .sos. Fix systemd integration in README to match. Flatten hV adding

.build.yml

@@ -21,12 +21,12 @@ tasks:
   - build-gcc: |
       cd tzpfms
       make
-      find out/ -maxdepth 1 -type f -exec readelf -d {} +
+      find out/ -maxdepth 1 -type f -exec readelf -d {} + | tee /dev/stderr | grep Shared | sort | uniq
       make clean
   - build-clang: |
       cd tzpfms
       CC=clang CXX=clang++ make
-      find out/ -maxdepth 1 -type f -exec readelf -d {} +
+      find out/ -maxdepth 1 -type f -exec readelf -d {} + | tee /dev/stderr | grep Shared | sort | uniq
   - manpages: |
       git -C tzpfms/ worktree add ../tzpfms-man man
       cd tzpfms-man

README.md

@@ -31,7 +31,7 @@ The output binaries are trimmed of extraneous dependencies, so they're all just
 The default `$TZPFMS_PASSPHRASE_HELPER` is the null string.
 To set a different default, set `TZPFMS_PASSPHRASE_HELPER` and `TZPFMS_PASSPHRASE_HELPER_MAN` for `make` — `$`s need to be double-escaped and `'`s need to be full-`'` escaped (i.e. `'\''`).
 
-As an example, for a sensible default value of `exec systemd-ask-password --id="tzpfms:$2" "$1:"` for OOB systemd integration, pass `TZPFMS_PASSPHRASE_HELPER='exec systemd-ask-password --id="tzpfms:$$2" "$$1"'` and `TZPFMS_PASSPHRASE_HELPER_MAN='Ic exec Nm systemd-ask-password Fl -id Ns Li = Ns Qo Li tzpfms:\& Ns Ar $$2 Qc Qo Ar $$1 Ns Li ":\&" Qc'`.
+As an example, for a sensible default value of `exec systemd-ask-password --id="tzpfms:$2" "$1:"` for OOB systemd integration, pass `TZPFMS_PASSPHRASE_HELPER='exec systemd-ask-password --id="tzpfms:$$2" "$$1:"'` and `TZPFMS_PASSPHRASE_HELPER_MAN='Ic exec Nm systemd-ask-password Fl -id Ns Li = Ns Qo Li tzpfms:\& Ns Ar $$2 Qc Qo Ar $$1 Ns Li ":\&" Qc'`.
 
 ### Installation
 
@@ -80,7 +80,7 @@ ln -s /usr/lib/i386-linux-gnu/libtss2-tcti-{swtpm,default}.so
 #### TPM1.x
 
 Build [`swtpm`](//github.com/stefanberger/swtpm), then prepare and run it and
-([hopefully](https://github.com/stefanberger/swtpm/issues/5#issuecomment-210607890)) [TrouSerS](//sourceforge.net/projects/trousers), as `root`/`tpm`:
+([hopefully](//github.com/stefanberger/swtpm/issues/5#issuecomment-210607890)) [TrouSerS](//sourceforge.net/projects/trousers), as `root`/`tpm`:
 ```sh
 swtpm_setup --tpmstate tpm1x-state --createek --display --logfile /dev/stdout --overwrite
 swtpm cuse -n tpm --tpmstate dir=tpm1x-state --seccomp action=none --log level=10,file=/dev/fd/4 4>&1
@@ -114,7 +114,7 @@ There's [the tracker](//todo.sr.ht/~nabijaczleweli/tzpfms), but also see the lis
 ## Contributing
 
 Send a patch inline, as an attachment, or a git link and a ref to pull from to
-[the list](//lists.sr.ht/~nabijaczleweli/tzpfms) ([~nabijaczleweli/tzpfms@lists.sr.ht](mailto:~nabijaczleweli/tzpfms)) or [me](mailto:nabijaczleweli@nabijaczleweli.xyz)
+[the list](//lists.sr.ht/~nabijaczleweli/tzpfms) ([~nabijaczleweli/tzpfms@lists.sr.ht](mailto:~nabijaczleweli/tzpfms@lists.sr.ht)) or [me](mailto:nabijaczleweli@nabijaczleweli.xyz)
 directly. I'm not picky, just please include the repo name in the subject prefix.
 
 ## Discussion

src/bin/zfs-tpm-list.cpp

@@ -57,8 +57,8 @@ int main(int argc, char ** argv) {
 				    maxdepth = SIZE_MAX;
 				    break;
 			    case 'd':
-				    if(parse_int(optarg, maxdepth))
-					    return fprintf(stderr, "%s is not an integer\n", optarg), __LINE__;
+				    if(!parse_uint(optarg, maxdepth))
+					    return fprintf(stderr, "-d %s: %s\n", optarg, strerror(errno)), __LINE__;
 				    break;
 			    case 'a':
 				    print_nontzpfms = true;

src/bin/zfs-tpm2-change-key.cpp

@@ -40,9 +40,10 @@ int main(int argc, char ** argv) {
 		    return with_tpm2_session([&](auto tpm2_ctx, auto tpm2_session) {
 			    TRY_MAIN(verify_backend(dataset, THIS_BACKEND, [&](auto previous_handle_s) {
 				    TPMI_DH_PERSISTENT previous_handle{};
-				    if(parse_int(previous_handle_s, previous_handle))
-					    fprintf(stderr, "Couldn't parse previous persistent handle for dataset %s. You might need to run \"tpm2_evictcontrol -c %s\" or equivalent!\n",
-					            zfs_get_name(dataset), previous_handle_s);
+				    if(!parse_uint(previous_handle_s, previous_handle))
+					    fprintf(stderr,
+					            "Couldn't parse previous persistent handle for dataset %s: %s. You might need to run \"tpm2_evictcontrol -c %s\" or equivalent!\n",
+					            zfs_get_name(dataset), strerror(errno), previous_handle_s);
 				    else {
 					    if(tpm2_free_persistent(tpm2_ctx, tpm2_session, previous_handle))
 						    fprintf(stderr,

src/fd.cpp

@@ -226,7 +226,6 @@ static int get_key_material_raw(const char * whom, bool again, bool newkey, uint
 
 static int get_key_material_dispatch(const char * whom, bool again, bool newkey, uint8_t *& buf, size_t & len_out) {
 	static const char * helper{};
-	printf("'%s'\n", STRINGIFY(TZPFMS_PASSPHRASE_HELPER));
 	if(!helper)
 		helper = getenv("TZPFMS_PASSPHRASE_HELPER") ?: STRINGIFY(TZPFMS_PASSPHRASE_HELPER);
 	if(*helper) {

src/main.hpp

@@ -29,8 +29,9 @@ int do_bare_main(int argc, char ** argv, const char * getoptions, const char * u
 #if __GLIBC__
 	setenv("POSIXLY_CORRECT", "1", true);
 #endif
-	auto gopts = reinterpret_cast<char *>(TRY_PTR("allocate options string", alloca(strlen(getoptions) + 2 + 1)));
-	snprintf(gopts, strlen(getoptions) + 2 + 1, "%shV", getoptions);
+	auto gopts = reinterpret_cast<char *>(alloca(strlen(getoptions) + 2 + 1));
+	gopts[0] = 'h', gopts[1] = 'V';
+	strcpy(gopts + 2, getoptions);
 	for(int opt; (opt = getopt(argc, argv, gopts)) != -1;)
 		switch(opt) {
 			case '?':

src/parse.hpp

@@ -5,20 +5,29 @@
 
 
 #include <charconv>
+#include <limits>
 #include <stdio.h>
+#include <errno.h>
 #include <string.h>
 
 
 template <class T>
-int parse_int(const char * what, T & out) {
-	int base = 10;
-	if(!strncmp(what, "0x", 2) || !strncmp(what, "0X", 2)) {
-		base = 16;
-		what += 2;
-	}
+bool parse_uint(const char * val, T & out) {
+	if(val[0] == '\0')
+		return errno = EINVAL, false;
+	if(val[0] == '-')
+		return errno = ERANGE, false;
 
-	if(std::from_chars(what, what + strlen(what), out, base).ptr == what)
-		return __LINE__;
-	else
-		return 0;
+	char * end{};
+	errno    = 0;
+	auto res = strtoull(val, &end, 0);
+	out      = res;
+	if(errno)
+		return false;
+	if(res > std::numeric_limits<T>::max())
+		return errno = ERANGE, false;
+	if(*end != '\0')
+		return errno = EINVAL, false;
+
+	return true;
 }

src/tpm2.cpp

@@ -52,8 +52,8 @@ TPM2B_DATA tpm2_creation_metadata(const char * dataset_name) {
 
 
 int tpm2_parse_handle(const char * dataset_name, const char * handle_s, TPMI_DH_PERSISTENT & handle) {
-	if(parse_int(handle_s, handle))
-		return fprintf(stderr, "Dataset %s's handle %s not valid.\n", dataset_name, handle_s), __LINE__;
+	if(!parse_uint(handle_s, handle))
+		return fprintf(stderr, "Dataset %s's handle %s: %s.\n", dataset_name, handle_s, strerror(errno)), __LINE__;
 
 	return 0;
 }