sys-fs/zfs: add exports.d patch

Closes: https://bugs.gentoo.org/742503
Package-Manager: Portage-3.0.8, Repoman-3.0.1
Signed-off-by: Georgy Yakovlev <gyakovlev@gentoo.org>

2 files changed, 193 insertions, 1 deletions

diff --git a/sys-fs/zfs/files/2.0.0_rc2-exports-d-permissions.patch b/sys-fs/zfs/files/2.0.0_rc2-exports-d-permissions.patch
new file mode 100644
index 000000000000..4acaf465a7bc
--- /dev/null
+++ b/sys-fs/zfs/files/2.0.0_rc2-exports-d-permissions.patch
@@ -0,0 +1,189 @@
+From fe413a4d901a243d98cfef16ea330f7114a104ea Mon Sep 17 00:00:00 2001
+From: George Wilson <george.wilson@delphix.com>
+Date: Tue, 15 Sep 2020 22:57:16 -0400
+Subject: [PATCH] zpool command complains about /etc/exports.d
+
+If the /etc/exports.d directory does not exist, then we should only
+create it when we're performing an action which already requires root
+privileges.
+
+This commit moves the directory creation to the enable/disable code
+path which ensures that we have the appropriate privileges.
+
+Signed-off-by: George Wilson <gwilson@delphix.com>
+Closes #10785
+---
+ lib/libshare/os/freebsd/nfs.c | 36 +++++++++++-------
+ lib/libshare/os/linux/nfs.c   | 71 ++++++++++++++++++++---------------
+ 2 files changed, 64 insertions(+), 43 deletions(-)
+
+diff --git a/lib/libshare/os/freebsd/nfs.c b/lib/libshare/os/freebsd/nfs.c
+index 65f3b11bf9b..5951b9eafa2 100644
+--- a/lib/libshare/os/freebsd/nfs.c
++++ b/lib/libshare/os/freebsd/nfs.c
+@@ -228,21 +228,33 @@ nfs_copy_entries(char *filename, const char *mountpoint)
+ 	int error = SA_OK;
+ 	char *line;
+ 
+-	/*
+-	 * If the file doesn't exist then there is nothing more
+-	 * we need to do.
+-	 */
+ 	FILE *oldfp = fopen(ZFS_EXPORTS_FILE, "r");
+-	if (oldfp == NULL)
+-		return (SA_OK);
+-
+ 	FILE *newfp = fopen(filename, "w+");
++	if (newfp == NULL) {
++		fprintf(stderr, "failed to open %s file: %s", filename,
++		    strerror(errno));
++		fclose(oldfp);
++		return (SA_SYSTEM_ERR);
++	}
+ 	fputs(FILE_HEADER, newfp);
+-	while ((line = zgetline(oldfp, mountpoint)) != NULL)
+-		fprintf(newfp, "%s\n", line);
+-	if (ferror(oldfp) != 0) {
+-		error = ferror(oldfp);
++
++	/*
++	 * The ZFS_EXPORTS_FILE may not exist yet. If that's the
++	 * case then just write out the new file.
++	 */
++	if (oldfp != NULL) {
++		while ((line = zgetline(oldfp, mountpoint)) != NULL)
++			fprintf(newfp, "%s\n", line);
++		if (ferror(oldfp) != 0) {
++			error = ferror(oldfp);
++		}
++		if (fclose(oldfp) != 0) {
++			fprintf(stderr, "Unable to close file %s: %s\n",
++			    filename, strerror(errno));
++			error = error != 0 ? error : SA_SYSTEM_ERR;
++		}
+ 	}
++
+ 	if (error == 0 && ferror(newfp) != 0) {
+ 		error = ferror(newfp);
+ 	}
+@@ -252,8 +264,6 @@ nfs_copy_entries(char *filename, const char *mountpoint)
+ 		    filename, strerror(errno));
+ 		error = error != 0 ? error : SA_SYSTEM_ERR;
+ 	}
+-	fclose(oldfp);
+-
+ 	return (error);
+ }
+ 
+diff --git a/lib/libshare/os/linux/nfs.c b/lib/libshare/os/linux/nfs.c
+index a6a9b33d765..1efa321b7bc 100644
+--- a/lib/libshare/os/linux/nfs.c
++++ b/lib/libshare/os/linux/nfs.c
+@@ -393,6 +393,14 @@ static char *
+ nfs_init_tmpfile(void)
+ {
+ 	char *tmpfile = NULL;
++	struct stat sb;
++
++	if (stat(ZFS_EXPORTS_DIR, &sb) < 0 &&
++	    mkdir(ZFS_EXPORTS_DIR, 0755) < 0) {
++		fprintf(stderr, "failed to create %s: %s\n",
++		    ZFS_EXPORTS_DIR, strerror(errno));
++		return (NULL);
++	}
+ 
+ 	if (asprintf(&tmpfile, "%s%s", ZFS_EXPORTS_FILE, ".XXXXXXXX") == -1) {
+ 		fprintf(stderr, "Unable to allocate temporary file\n");
+@@ -481,36 +489,49 @@ nfs_copy_entries(char *filename, const char *mountpoint)
+ 	size_t buflen = 0;
+ 	int error = SA_OK;
+ 
+-	/*
+-	 * If the file doesn't exist then there is nothing more
+-	 * we need to do.
+-	 */
+ 	FILE *oldfp = fopen(ZFS_EXPORTS_FILE, "r");
+-	if (oldfp == NULL)
+-		return (SA_OK);
+-
+ 	FILE *newfp = fopen(filename, "w+");
++	if (newfp == NULL) {
++		fprintf(stderr, "failed to open %s file: %s", filename,
++		    strerror(errno));
++		fclose(oldfp);
++		return (SA_SYSTEM_ERR);
++	}
+ 	fputs(FILE_HEADER, newfp);
+-	while ((getline(&buf, &buflen, oldfp)) != -1) {
+-		char *space = NULL;
+ 
+-		if (buf[0] == '\n' || buf[0] == '#')
+-			continue;
+-
+-		if ((space = strchr(buf, ' ')) != NULL) {
+-			int mountpoint_len = strlen(mountpoint);
++	/*
++	 * The ZFS_EXPORTS_FILE may not exist yet. If that's the
++	 * case then just write out the new file.
++	 */
++	if (oldfp != NULL) {
++		while (getline(&buf, &buflen, oldfp) != -1) {
++			char *space = NULL;
+ 
+-			if (space - buf == mountpoint_len &&
+-			    strncmp(mountpoint, buf, mountpoint_len) == 0) {
++			if (buf[0] == '\n' || buf[0] == '#')
+ 				continue;
++
++			if ((space = strchr(buf, ' ')) != NULL) {
++				int mountpoint_len = strlen(mountpoint);
++
++				if (space - buf == mountpoint_len &&
++				    strncmp(mountpoint, buf,
++				    mountpoint_len) == 0) {
++					continue;
++				}
+ 			}
++			fputs(buf, newfp);
+ 		}
+-		fputs(buf, newfp);
+-	}
+ 
+-	if (oldfp != NULL && ferror(oldfp) != 0) {
+-		error = ferror(oldfp);
++		if (ferror(oldfp) != 0) {
++			error = ferror(oldfp);
++		}
++		if (fclose(oldfp) != 0) {
++			fprintf(stderr, "Unable to close file %s: %s\n",
++			    filename, strerror(errno));
++			error = error != 0 ? error : SA_SYSTEM_ERR;
++		}
+ 	}
++
+ 	if (error == 0 && ferror(newfp) != 0) {
+ 		error = ferror(newfp);
+ 	}
+@@ -521,8 +542,6 @@ nfs_copy_entries(char *filename, const char *mountpoint)
+ 		    filename, strerror(errno));
+ 		error = error != 0 ? error : SA_SYSTEM_ERR;
+ 	}
+-	fclose(oldfp);
+-
+ 	return (error);
+ }
+ 
+@@ -701,13 +720,5 @@ static const sa_share_ops_t nfs_shareops = {
+ void
+ libshare_nfs_init(void)
+ {
+-	struct stat sb;
+-
+ 	nfs_fstype = register_fstype("nfs", &nfs_shareops);
+-
+-	if (stat(ZFS_EXPORTS_DIR, &sb) < 0 &&
+-	    mkdir(ZFS_EXPORTS_DIR, 0755) < 0) {
+-		fprintf(stderr, "failed to create %s: %s\n",
+-		    ZFS_EXPORTS_DIR, strerror(errno));
+-	}
+ }
diff --git a/sys-fs/zfs/zfs-2.0.0_rc2.ebuild b/sys-fs/zfs/zfs-2.0.0_rc2-r1.ebuild
index d2f00419b0c7..1f9d81f16e60 100644
--- a/sys-fs/zfs/zfs-2.0.0_rc2.ebuild
+++ b/sys-fs/zfs/zfs-2.0.0_rc2-r1.ebuild
@@ -76,7 +76,10 @@ REQUIRED_USE="
 
 RESTRICT="test"
 
-PATCHES=( "${FILESDIR}/bash-completion-sudo.patch" )
+PATCHES=(
+	"${FILESDIR}/bash-completion-sudo.patch"
+	"${FILESDIR}/${PV}-exports-d-permissions.patch"
+)
 
 pkg_setup() {
 	if use kernel_linux && use test-suite; then