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library: make sure that the proc_t is now fixed length

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The former variable length structure created potential
problems for library users like that referenced below.

We will now parallel the same approach newlib uses for
the configure options --enable-oomem & --with-systemd.
Thus, the --enable-oomem and OOMEM_ENABLE #define have
been eliminated and the --with-systemd option (#define
WITH_SYSTEMD) will hereafter impact one function only.

The proc_t struct itself will now *never* be impacted.

Reference(s):
https://gitlab.com/procps-ng/procps/issues/31

Signed-off-by: Jim Warner <james.warner@comcast.net>
This commit is contained in:
Jim Warner
2016-06-02 00:00:00 -05:00
committed by Craig Small
parent 10503c03d4
commit 32db4e99a6
3 changed files with 10 additions and 32 deletions
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4
proc/readproc.h
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@@ -167,14 +167,11 @@ typedef struct proc_t {
tpgid, // stat terminal process group id
exit_signal, // stat might not be SIGCHLD
processor; // stat current (or most recent?) CPU
#ifdef OOMEM_ENABLE
int
oom_score, // oom_score (badness for OOM killer)
oom_adj; // oom_adj (adjustment to OOM score)
#endif
long
ns[NUM_NS]; // (ns subdir) inode number of namespaces
#ifdef WITH_SYSTEMD
char
*sd_mach, // n/a systemd vm/container name
*sd_ouid, // n/a systemd session owner uid
@@ -183,7 +180,6 @@ typedef struct proc_t {
*sd_slice, // n/a systemd slice unit
*sd_unit, // n/a systemd system unit id
*sd_uunit; // n/a systemd user unit id
#endif
const char
*lxcname; // n/a lxc container name
} proc_t;