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author | Daniel J Walsh <dwalsh@redhat.com> | 2018-09-18 15:31:54 -0400 |
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committer | Daniel J Walsh <dwalsh@redhat.com> | 2018-09-18 17:20:30 -0400 |
commit | 92b28a88d8bcd5aa50352ecaff844229df1cee59 (patch) | |
tree | b340ddc09d29ae2cf29cb83269bcb614d94a6a10 /vendor/github.com/projectatomic/buildah/unshare/unshare.c | |
parent | c3a0874222784e8996dbc472b9ca893a80aff451 (diff) | |
download | podman-92b28a88d8bcd5aa50352ecaff844229df1cee59.tar.gz podman-92b28a88d8bcd5aa50352ecaff844229df1cee59.tar.bz2 podman-92b28a88d8bcd5aa50352ecaff844229df1cee59.zip |
Vendor in latest containers/buildah
Switch from projectatomic/buildah to containers/buildah
Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
Diffstat (limited to 'vendor/github.com/projectatomic/buildah/unshare/unshare.c')
-rw-r--r-- | vendor/github.com/projectatomic/buildah/unshare/unshare.c | 110 |
1 files changed, 0 insertions, 110 deletions
diff --git a/vendor/github.com/projectatomic/buildah/unshare/unshare.c b/vendor/github.com/projectatomic/buildah/unshare/unshare.c deleted file mode 100644 index 83864359b..000000000 --- a/vendor/github.com/projectatomic/buildah/unshare/unshare.c +++ /dev/null @@ -1,110 +0,0 @@ -#define _GNU_SOURCE -#include <sys/types.h> -#include <sys/ioctl.h> -#include <sys/stat.h> -#include <fcntl.h> -#include <grp.h> -#include <sched.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <termios.h> -#include <unistd.h> - -static int _buildah_unshare_parse_envint(const char *envname) { - char *p, *q; - long l; - - p = getenv(envname); - if (p == NULL) { - return -1; - } - q = NULL; - l = strtol(p, &q, 10); - if ((q == NULL) || (*q != '\0')) { - fprintf(stderr, "Error parsing \"%s\"=\"%s\"!\n", envname, p); - _exit(1); - } - unsetenv(envname); - return l; -} - -void _buildah_unshare(void) -{ - int flags, pidfd, continuefd, n, pgrp, sid, ctty, allow_setgroups; - char buf[2048]; - - flags = _buildah_unshare_parse_envint("_Buildah-unshare"); - if (flags == -1) { - return; - } - if ((flags & CLONE_NEWUSER) != 0) { - if (unshare(CLONE_NEWUSER) == -1) { - fprintf(stderr, "Error during unshare(CLONE_NEWUSER): %m\n"); - _exit(1); - } - } - pidfd = _buildah_unshare_parse_envint("_Buildah-pid-pipe"); - if (pidfd != -1) { - snprintf(buf, sizeof(buf), "%llu", (unsigned long long) getpid()); - if (write(pidfd, buf, strlen(buf)) != strlen(buf)) { - fprintf(stderr, "Error writing PID to pipe on fd %d: %m\n", pidfd); - _exit(1); - } - close(pidfd); - } - continuefd = _buildah_unshare_parse_envint("_Buildah-continue-pipe"); - if (continuefd != -1) { - n = read(continuefd, buf, sizeof(buf)); - if (n > 0) { - fprintf(stderr, "Error: %.*s\n", n, buf); - _exit(1); - } - close(continuefd); - } - sid = _buildah_unshare_parse_envint("_Buildah-setsid"); - if (sid == 1) { - if (setsid() == -1) { - fprintf(stderr, "Error during setsid: %m\n"); - _exit(1); - } - } - pgrp = _buildah_unshare_parse_envint("_Buildah-setpgrp"); - if (pgrp == 1) { - if (setpgrp() == -1) { - fprintf(stderr, "Error during setpgrp: %m\n"); - _exit(1); - } - } - ctty = _buildah_unshare_parse_envint("_Buildah-ctty"); - if (ctty != -1) { - if (ioctl(ctty, TIOCSCTTY, 0) == -1) { - fprintf(stderr, "Error while setting controlling terminal to %d: %m\n", ctty); - _exit(1); - } - } - allow_setgroups = _buildah_unshare_parse_envint("_Buildah-allow-setgroups"); - if ((flags & CLONE_NEWUSER) != 0) { - if (allow_setgroups == 1) { - if (setgroups(0, NULL) != 0) { - fprintf(stderr, "Error during setgroups(0, NULL): %m\n"); - _exit(1); - } - } - if (setresgid(0, 0, 0) != 0) { - fprintf(stderr, "Error during setresgid(0): %m\n"); - _exit(1); - } - if (setresuid(0, 0, 0) != 0) { - fprintf(stderr, "Error during setresuid(0): %m\n"); - _exit(1); - } - } - if ((flags & ~CLONE_NEWUSER) != 0) { - if (unshare(flags & ~CLONE_NEWUSER) == -1) { - fprintf(stderr, "Error during unshare(...): %m\n"); - _exit(1); - } - } - return; -} |