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1d37186fe

Ron Yorston
Ron Yorston
2019-04-16
SUCCESS Duration: 151s

Subject

ash: add bash-compatible EPOCH variables

Binary

No binary (build failed)

Architecture & Compiler Flags

Architecture: x86_64-linux-gnu Compiler: gcc (Ubuntu 11.4.0-1ubuntu1~22.04.3) 11.4.0

—

Build Log

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Commit Diff GitHub →

shell/ash.c +56 -21
shell/ash.c+56 -21
@@ -220,6 +220,7 @@
#define BASH_SOURCE ENABLE_ASH_BASH_COMPAT
#define BASH_PIPEFAIL ENABLE_ASH_BASH_COMPAT
#define BASH_HOSTNAME_VAR ENABLE_ASH_BASH_COMPAT
+#define BASH_EPOCH_VARS ENABLE_ASH_BASH_COMPAT
#define BASH_SHLVL_VAR ENABLE_ASH_BASH_COMPAT
#define BASH_XTRACEFD ENABLE_ASH_BASH_COMPAT
#define BASH_READ_D ENABLE_ASH_BASH_COMPAT
@@ -2053,6 +2054,10 @@ static void changepath(const char *) FAST_FUNC;
#if ENABLE_ASH_RANDOM_SUPPORT
static void change_random(const char *) FAST_FUNC;
#endif
+#if BASH_EPOCH_VARS
+static void change_seconds(const char *) FAST_FUNC;
+static void change_realtime(const char *) FAST_FUNC;
+#endif
static const struct {
int flags;
@@ -2079,6 +2084,10 @@ static const struct {
#if ENABLE_ASH_RANDOM_SUPPORT
{ VSTRFIXED|VTEXTFIXED|VUNSET|VDYNAMIC, "RANDOM", change_random },
#endif
+#if BASH_EPOCH_VARS
+ { VSTRFIXED|VTEXTFIXED|VUNSET|VDYNAMIC, "EPOCHSECONDS", change_seconds },
+ { VSTRFIXED|VTEXTFIXED|VUNSET|VDYNAMIC, "EPOCHREALTIME", change_realtime },
+#endif
#if ENABLE_LOCALE_SUPPORT
{ VSTRFIXED|VTEXTFIXED|VUNSET, "LC_ALL" , change_lc_all },
{ VSTRFIXED|VTEXTFIXED|VUNSET, "LC_CTYPE" , change_lc_ctype },
@@ -2110,26 +2119,26 @@ extern struct globals_var *BB_GLOBAL_CONST ash_ptr_to_globals_var;
#define linenovar (G_var.linenovar )
#define vifs varinit[0]
#if ENABLE_ASH_MAIL
-# define vmail (&vifs)[1]
-# define vmpath (&vmail)[1]
-# define vpath (&vmpath)[1]
-#else
-# define vpath (&vifs)[1]
-#endif
-#define vps1 (&vpath)[1]
-#define vps2 (&vps1)[1]
-#define vps4 (&vps2)[1]
+# define vmail varinit[1]
+# define vmpath varinit[2]
+#endif
+#define VAR_OFFSET1 (ENABLE_ASH_MAIL*2)
+#define vpath varinit[VAR_OFFSET1 + 1]
+#define vps1 varinit[VAR_OFFSET1 + 2]
+#define vps2 varinit[VAR_OFFSET1 + 3]
+#define vps4 varinit[VAR_OFFSET1 + 4]
#if ENABLE_ASH_GETOPTS
-# define voptind (&vps4)[1]
-# define vlineno (&voptind)[1]
-# if ENABLE_ASH_RANDOM_SUPPORT
-# define vrandom (&vlineno)[1]
-# endif
-#else
-# define vlineno (&vps4)[1]
-# if ENABLE_ASH_RANDOM_SUPPORT
-# define vrandom (&vlineno)[1]
-# endif
+# define voptind varinit[VAR_OFFSET1 + 5]
+#endif
+#define VAR_OFFSET2 (VAR_OFFSET1 + ENABLE_ASH_GETOPTS)
+#define vlineno varinit[VAR_OFFSET2 + 5]
+#if ENABLE_ASH_RANDOM_SUPPORT
+# define vrandom varinit[VAR_OFFSET2 + 6]
+#endif
+#define VAR_OFFSET3 (VAR_OFFSET2 + ENABLE_ASH_RANDOM_SUPPORT)
+#if BASH_EPOCH_VARS
+# define vepochs varinit[VAR_OFFSET3 + 6]
+# define vepochr varinit[VAR_OFFSET3 + 7]
#endif
#define INIT_G_var() do { \
unsigned i; \
@@ -2268,7 +2277,7 @@ lookupvar(const char *name)
v = *findvar(hashvar(name), name);
if (v) {
-#if ENABLE_ASH_RANDOM_SUPPORT
+#if ENABLE_ASH_RANDOM_SUPPORT || BASH_EPOCH_VARS
/*
* Dynamic variables are implemented roughly the same way they are
* in bash. Namely, they're "special" so long as they aren't unset.
@@ -2364,7 +2373,7 @@ setvareq(char *s, int flags)
}
flags |= vp->flags & ~(VTEXTFIXED|VSTACK|VNOSAVE|VUNSET);
-#if ENABLE_ASH_RANDOM_SUPPORT
+#if ENABLE_ASH_RANDOM_SUPPORT || BASH_EPOCH_VARS
if (flags & VUNSET)
flags &= ~VDYNAMIC;
#endif
@@ -11249,6 +11258,32 @@ change_random(const char *value)
}
#endif
+#if BASH_EPOCH_VARS
+static void FAST_FUNC
+change_epoch(struct var *vepoch, const char *fmt)
+{
+ struct timeval tv;
+ char buffer[sizeof("%lu.nnnnnn") + sizeof(long)*3];
+
+ gettimeofday(&tv, NULL);
+ sprintf(buffer, fmt, (unsigned long)tv.tv_sec, (unsigned)tv.tv_usec);
+ setvar(vepoch->var_text, buffer, VNOFUNC);
+ vepoch->flags &= ~VNOFUNC;
+}
+
+static void FAST_FUNC
+change_seconds(const char *value UNUSED_PARAM)
+{
+ change_epoch(&vepochs, "%lu");
+}
+
+static void FAST_FUNC
+change_realtime(const char *value UNUSED_PARAM)
+{
+ change_epoch(&vepochr, "%lu.%06u");
+}
+#endif
+
#if ENABLE_ASH_GETOPTS
static int
getopts(char *optstr, char *optvar, char **optfirst)