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util: when we try to read /proc/cmdline in a container, read /proc/1/cmdline instead
[elogind.git]
/
src
/
shared
/
util.c
diff --git
a/src/shared/util.c
b/src/shared/util.c
index 5c9d0bb730d396a16d4f02d3e56dae88b2c200f4..8d7cf5398f981e248bf0301f32b60260c9307d5e 100644
(file)
--- a/
src/shared/util.c
+++ b/
src/shared/util.c
@@
-5994,8
+5994,20
@@
int proc_cmdline(char **ret) {
int r;
if (detect_container(NULL) > 0) {
int r;
if (detect_container(NULL) > 0) {
- *ret = NULL;
- return 0;
+ char *buf, *p;
+ size_t sz = 0;
+
+ r = read_full_file("/proc/1/cmdline", &buf, &sz);
+ if (r < 0)
+ return r;
+
+ for (p = buf; p + 1 < buf + sz; p++)
+ if (*p == 0)
+ *p = ' ';
+
+ *p = 0;
+ *ret = buf;
+ return 1;
}
r = read_one_line_file("/proc/cmdline", ret);
}
r = read_one_line_file("/proc/cmdline", ret);