Date: Sat, 22 Nov 2025 12:12:13 +0000 From: Dag-Erling=?utf-8?Q? Sm=C3=B8rg?=rav <des@FreeBSD.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org Subject: git: fe836c50120d - main - cp: Fix copying the root directory Message-ID: <6921a89d.fc66.7dd6db22@gitrepo.freebsd.org>
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The branch main has been updated by des: URL: https://cgit.FreeBSD.org/src/commit/?id=fe836c50120daed3e4084f43c27d8d650d36dee8 commit fe836c50120daed3e4084f43c27d8d650d36dee8 Author: Dag-Erling Smørgrav <des@FreeBSD.org> AuthorDate: 2025-11-22 12:11:59 +0000 Commit: Dag-Erling Smørgrav <des@FreeBSD.org> CommitDate: 2025-11-22 12:11:59 +0000 cp: Fix copying the root directory When the source of the copy operation is the root directory, we should neither append it to the destination path on FTS_D nor trim it back off on FTS_DP. PR: 291132 MFC after: 3 days Fixes: 82fc0d09e862 ("cp: Partly restore symlink folllowing.") Reviewed by: markj Differential Revision: https://reviews.freebsd.org/D53863 --- bin/cp/cp.c | 7 ++++++- bin/cp/tests/cp_test.sh | 15 +++++++++++++++ 2 files changed, 21 insertions(+), 1 deletion(-) diff --git a/bin/cp/cp.c b/bin/cp/cp.c index 38fe65399d06..7ac1e5f6a4c4 100644 --- a/bin/cp/cp.c +++ b/bin/cp/cp.c @@ -433,6 +433,8 @@ copy(char *argv[], enum op type, int fts_options, struct stat *root_stat) sep = strchr(to.base, '\0'); sep[0] = '/'; sep[1] = '\0'; + } else if (strcmp(curr->fts_name, "/") == 0) { + /* special case when source is the root directory */ } else { /* entering a directory; append its name to to.path */ len = snprintf(to.end, END(to.path) - to.end, "%s%s", @@ -520,6 +522,8 @@ copy(char *argv[], enum op type, int fts_options, struct stat *root_stat) if (type == DIR_TO_DNE && curr->fts_level == FTS_ROOTLEVEL) { /* this is actually our created root */ + } else if (strcmp(curr->fts_name, "/") == 0) { + /* special case when source is the root directory */ } else { while (to.end > to.path && *to.end != '/') to.end--; @@ -551,7 +555,8 @@ copy(char *argv[], enum op type, int fts_options, struct stat *root_stat) /* Not an error but need to remember it happened. */ if (to.path[0] == '\0') { /* - * This can happen in two cases: + * This can happen in three cases: + * - The source path is the root directory. * - DIR_TO_DNE; we created the directory and * populated root_stat earlier. * - FILE_TO_DIR if a source has a trailing slash; diff --git a/bin/cp/tests/cp_test.sh b/bin/cp/tests/cp_test.sh index b637f862b7d3..af309ca7ea80 100755 --- a/bin/cp/tests/cp_test.sh +++ b/bin/cp/tests/cp_test.sh @@ -747,9 +747,23 @@ dstmode_body() atf_check cmp dir/file dst/file } +atf_test_case root +root_head() +{ + atf_set "descr" "Test copying the root directory" +} +root_body() +{ + atf_check mkdir dst + atf_check -s exit:1 \ + -e inline:"cp: / is a directory (not copied).\n" \ + cp / dst +} + atf_test_case to_root cleanup to_root_head() { + atf_set "descr" "Test copying to the root directory" atf_set "require.user" "unprivileged" } to_root_body() @@ -893,6 +907,7 @@ atf_init_test_cases() atf_add_test_case to_deaddirlink atf_add_test_case to_link_outside atf_add_test_case dstmode + atf_add_test_case root atf_add_test_case to_root atf_add_test_case dirloop atf_add_test_case unrdirhelp
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