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author | Daniel P. Berrange <berrange@redhat.com> | 2012-02-08 14:21:28 +0000 |
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committer | Daniel P. Berrange <berrange@redhat.com> | 2012-02-08 19:50:15 +0000 |
commit | d474dbaddebfce8a2f6cfc4d2c4a9c50c2fab6df (patch) | |
tree | 6d03216cbec14dd3b0e1d11b4b16fc80c39c890d | |
parent | Replace truncate() with ftruncate() (diff) | |
download | libvirt-d474dbaddebfce8a2f6cfc4d2c4a9c50c2fab6df.tar.gz libvirt-d474dbaddebfce8a2f6cfc4d2c4a9c50c2fab6df.tar.bz2 libvirt-d474dbaddebfce8a2f6cfc4d2c4a9c50c2fab6df.zip |
Populate /dev/std{in,out,err} symlinks in LXC containers
Some applications expect /dev/std{in,out,err} to exist. Populate
them during container startup as symlinks to /proc/self/fd
-rw-r--r-- | src/lxc/lxc_container.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/src/lxc/lxc_container.c b/src/lxc/lxc_container.c index 04af39bd2..e93fda500 100644 --- a/src/lxc/lxc_container.c +++ b/src/lxc/lxc_container.c @@ -584,6 +584,15 @@ static int lxcContainerPopulateDevices(char **ttyPaths, size_t nttyPaths) { LXC_DEV_MAJ_MEMORY, LXC_DEV_MIN_RANDOM, 0666, "/dev/random" }, { LXC_DEV_MAJ_MEMORY, LXC_DEV_MIN_URANDOM, 0666, "/dev/urandom" }, }; + const struct { + const char *src; + const char *dst; + } links[] = { + { "/proc/self/fd/0", "/dev/stdin" }, + { "/proc/self/fd/1", "/dev/stdout" }, + { "/proc/self/fd/2", "/dev/stderr" }, + { "/proc/self/fd", "/dev/fd" }, + }; /* Populate /dev/ with a few important bits */ for (i = 0 ; i < ARRAY_CARDINALITY(devs) ; i++) { @@ -597,6 +606,15 @@ static int lxcContainerPopulateDevices(char **ttyPaths, size_t nttyPaths) } } + for (i = 0 ; i < ARRAY_CARDINALITY(links) ; i++) { + if (symlink(links[i].src, links[i].dst) < 0) { + virReportSystemError(errno, + _("Failed to symlink device %s to %s"), + links[i].dst, links[i].src); + return -1; + } + } + if (access("/dev/pts/ptmx", W_OK) == 0) { /* We have private devpts capability, so bind that */ if (virFileTouch("/dev/ptmx", 0666) < 0) |