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zpool command complains about /etc/exports.d

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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.

Reviewed-by: Richard Elling <Richard.Elling@RichardElling.com>
Reviewed-by: Matthew Ahrens <mahrens@delphix.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: George Wilson <gwilson@delphix.com>
Closes #10785
Closes #10934
This commit is contained in:
George Wilson 2020-09-25 15:09:40 -05:00 committed by GitHub
parent a5c77dc4d5
commit bd76bcb36d
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 65 additions and 44 deletions
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38
lib/libshare/os/freebsd/nfs.c
View File

@ -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+");
fputs(FILE_HEADER, newfp);
while ((line = zgetline(oldfp, mountpoint)) != NULL)
fprintf(newfp, "%s\n", line);
if (ferror(oldfp) != 0) {
error = ferror(oldfp);
if (newfp == NULL) {
fprintf(stderr, "failed to open %s file: %s", filename,
strerror(errno));
fclose(oldfp);
return (SA_SYSTEM_ERR);
}
fputs(FILE_HEADER, newfp);
/*
* 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);
}

71
lib/libshare/os/linux/nfs.c
View File

@ -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;
/*
* 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 = strchr(buf, ' ')) != NULL) {
int mountpoint_len = strlen(mountpoint);
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);
}
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;
}
fputs(buf, newfp);
}
if (oldfp != NULL && ferror(oldfp) != 0) {
error = ferror(oldfp);
}
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));
}
}