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authorDenis Vlasenko <vda.linux@googlemail.com>2008-11-21 10:36:36 +0000
committerDenis Vlasenko <vda.linux@googlemail.com>2008-11-21 10:36:36 +0000
commit340299a8bc923f548e6889093b6665241f4f0aa8 (patch)
treee27e5fba77d7366161220d34bcfc5f8d9f532fdf /shell
parentb8baf407aacc09167c4e9fa0db55fe323b15854e (diff)
downloadbusybox-340299a8bc923f548e6889093b6665241f4f0aa8.tar.gz
ash: fix miscalculation of memory needed for eval tree
found by Timo Teras (timo.teras AT iki.fi)
Diffstat (limited to 'shell')
-rw-r--r--shell/ash.c68
1 files changed, 35 insertions, 33 deletions
diff --git a/shell/ash.c b/shell/ash.c
index 92aa5ecc0..f99c50933 100644
--- a/shell/ash.c
+++ b/shell/ash.c
@@ -536,6 +536,7 @@ static const char dolatstr[] ALIGN1 = {
#define NHERE 24
#define NXHERE 25
#define NNOT 26
+#define N_NUMBER 27
union node;
@@ -7546,43 +7547,44 @@ commandcmd(int argc UNUSED_PARAM, char **argv UNUSED_PARAM)
/* ============ eval.c */
-static int funcblocksize; /* size of structures in function */
-static int funcstringsize; /* size of strings in node */
-static void *funcblock; /* block to allocate function from */
-static char *funcstring; /* block to allocate strings from */
+static int funcblocksize; /* size of structures in function */
+static int funcstringsize; /* size of strings in node */
+static void *funcblock; /* block to allocate function from */
+static char *funcstring; /* block to allocate strings from */
/* flags in argument to evaltree */
-#define EV_EXIT 01 /* exit after evaluating tree */
-#define EV_TESTED 02 /* exit status is checked; ignore -e flag */
+#define EV_EXIT 01 /* exit after evaluating tree */
+#define EV_TESTED 02 /* exit status is checked; ignore -e flag */
#define EV_BACKCMD 04 /* command executing within back quotes */
-static const short nodesize[26] = {
- SHELL_ALIGN(sizeof(struct ncmd)),
- SHELL_ALIGN(sizeof(struct npipe)),
- SHELL_ALIGN(sizeof(struct nredir)),
- SHELL_ALIGN(sizeof(struct nredir)),
- SHELL_ALIGN(sizeof(struct nredir)),
- SHELL_ALIGN(sizeof(struct nbinary)),
- SHELL_ALIGN(sizeof(struct nbinary)),
- SHELL_ALIGN(sizeof(struct nbinary)),
- SHELL_ALIGN(sizeof(struct nif)),
- SHELL_ALIGN(sizeof(struct nbinary)),
- SHELL_ALIGN(sizeof(struct nbinary)),
- SHELL_ALIGN(sizeof(struct nfor)),
- SHELL_ALIGN(sizeof(struct ncase)),
- SHELL_ALIGN(sizeof(struct nclist)),
- SHELL_ALIGN(sizeof(struct narg)),
- SHELL_ALIGN(sizeof(struct narg)),
- SHELL_ALIGN(sizeof(struct nfile)),
- SHELL_ALIGN(sizeof(struct nfile)),
- SHELL_ALIGN(sizeof(struct nfile)),
- SHELL_ALIGN(sizeof(struct nfile)),
- SHELL_ALIGN(sizeof(struct nfile)),
- SHELL_ALIGN(sizeof(struct ndup)),
- SHELL_ALIGN(sizeof(struct ndup)),
- SHELL_ALIGN(sizeof(struct nhere)),
- SHELL_ALIGN(sizeof(struct nhere)),
- SHELL_ALIGN(sizeof(struct nnot)),
+static const short nodesize[N_NUMBER] = {
+ [NCMD ] = SHELL_ALIGN(sizeof(struct ncmd)),
+ [NPIPE ] = SHELL_ALIGN(sizeof(struct npipe)),
+ [NREDIR ] = SHELL_ALIGN(sizeof(struct nredir)),
+ [NBACKGND ] = SHELL_ALIGN(sizeof(struct nredir)),
+ [NSUBSHELL] = SHELL_ALIGN(sizeof(struct nredir)),
+ [NAND ] = SHELL_ALIGN(sizeof(struct nbinary)),
+ [NOR ] = SHELL_ALIGN(sizeof(struct nbinary)),
+ [NSEMI ] = SHELL_ALIGN(sizeof(struct nbinary)),
+ [NIF ] = SHELL_ALIGN(sizeof(struct nif)),
+ [NWHILE ] = SHELL_ALIGN(sizeof(struct nbinary)),
+ [NUNTIL ] = SHELL_ALIGN(sizeof(struct nbinary)),
+ [NFOR ] = SHELL_ALIGN(sizeof(struct nfor)),
+ [NCASE ] = SHELL_ALIGN(sizeof(struct ncase)),
+ [NCLIST ] = SHELL_ALIGN(sizeof(struct nclist)),
+ [NDEFUN ] = SHELL_ALIGN(sizeof(struct narg)),
+ [NARG ] = SHELL_ALIGN(sizeof(struct narg)),
+ [NTO ] = SHELL_ALIGN(sizeof(struct nfile)),
+ [NTO2 ] = SHELL_ALIGN(sizeof(struct nfile)),
+ [NCLOBBER ] = SHELL_ALIGN(sizeof(struct nfile)),
+ [NFROM ] = SHELL_ALIGN(sizeof(struct nfile)),
+ [NFROMTO ] = SHELL_ALIGN(sizeof(struct nfile)),
+ [NAPPEND ] = SHELL_ALIGN(sizeof(struct nfile)),
+ [NTOFD ] = SHELL_ALIGN(sizeof(struct ndup)),
+ [NFROMFD ] = SHELL_ALIGN(sizeof(struct ndup)),
+ [NHERE ] = SHELL_ALIGN(sizeof(struct nhere)),
+ [NXHERE ] = SHELL_ALIGN(sizeof(struct nhere)),
+ [NNOT ] = SHELL_ALIGN(sizeof(struct nnot)),
};
static void calcsize(union node *n);