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nspawn: ignore EEXIST when creating mount point

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A combination of commits f3c80515c and 79d80fc14 cause nspawn to
silently fail with a commandline such as:

  # systemd-nspawn -D /build/extra-x86_64 --bind=/usr

strace shows the culprit:

  [pid 27868] writev(2, [{"Failed to create mount point /build/extra-x86_64/usr: File exists", 82}, {"\n", 1}], 2) = 83
This commit is contained in:
Dave Reisner
2014-10-29 13:32:43 -04:00
parent ef7b6c0190
commit 1ab19cb167
Notes: Lennart Poettering 2014-10-30 01:15:39 +01:00 
Backport: bugfix
1 changed files with 1 additions and 1 deletions
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2
src/nspawn/nspawn.c
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@@ -758,7 +758,7 @@ static int mount_binds(const char *dest, char **l, bool ro) {
* and char devices. */
if (S_ISDIR(source_st.st_mode)) {
r = mkdir_label(where, 0755);
if (r < 0) {
if (r < 0 && errno != EEXIST) {
log_error("Failed to create mount point %s: %s", where, strerror(-r));
return r;