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[import] fix stdin/stdout pipe behavior in import/export tar/raw

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The code existed in machinectl to use stdin/stdout if the path for
import/export tar/raw was empty or dash (-) but a check to
`fd_verify_regular` in importd prevented it from working.

Update the check instead to explicitly check for regular file or
pipe/fifo.

Fixes #14346
This commit is contained in:
Anita Zhang 2019-12-17 01:08:04 -08:00 committed by Yu Watanabe
parent 4d92039fce
commit 1209ef94bd
2 changed files with 24 additions and 6 deletions
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18
src/import/importd.c
View File

@ -694,6 +694,7 @@ static int method_import_tar_or_raw(sd_bus_message *msg, void *userdata, sd_bus_
const char *local, *object;
Manager *m = userdata;
TransferType type;
struct stat st;
uint32_t id;
assert(msg);
@ -717,9 +718,11 @@ static int method_import_tar_or_raw(sd_bus_message *msg, void *userdata, sd_bus_
if (r < 0)
return r;
r = fd_verify_regular(fd);
if (r < 0)
return r;
if (fstat(fd, &st) < 0)
return -errno;
if (!S_ISREG(st.st_mode) && !S_ISFIFO(st.st_mode))
return -EINVAL;
if (!machine_name_is_valid(local))
return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Local name %s is invalid", local);
@ -829,6 +832,7 @@ static int method_export_tar_or_raw(sd_bus_message *msg, void *userdata, sd_bus_
const char *local, *object, *format;
Manager *m = userdata;
TransferType type;
struct stat st;
uint32_t id;
assert(msg);
@ -855,9 +859,11 @@ static int method_export_tar_or_raw(sd_bus_message *msg, void *userdata, sd_bus_
if (!machine_name_is_valid(local))
return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Local name %s is invalid", local);
r = fd_verify_regular(fd);
if (r < 0)
return r;
if (fstat(fd, &st) < 0)
return -errno;
if (!S_ISREG(st.st_mode) && !S_ISFIFO(st.st_mode))
return -EINVAL;
type = streq_ptr(sd_bus_message_get_member(msg), "ExportTar") ? TRANSFER_EXPORT_TAR : TRANSFER_EXPORT_RAW;

12
test/TEST-25-IMPORT/testsuite.sh
View File

@ -119,6 +119,18 @@ machinectl remove scratch4
! test -f /var/lib/machines/scratch4
! machinectl image-status scratch4
# Test import-tar hypen/stdin pipe behavior
cat /var/tmp/scratch.tar.gz | machinectl import-tar - scratch5
test -d /var/lib/machines/scratch5
machinectl image-status scratch5
diff -r /var/tmp/scratch/ /var/lib/machines/scratch5
# Test export-tar hypen/stdout pipe behavior
mkdir -p /var/tmp/extract
machinectl export-tar scratch5 - | tar xvf - -C /var/tmp/extract/
diff -r /var/tmp/scratch/ /var/tmp/extract/
rm -rf /var/tmp/extract
rm -rf /var/tmp/scratch
echo OK > /testok