find: Change execv to execvp
- Make globals static - Fix a comment - Change some data types - Rearrange struct members from largest to smallest (no affect due to small structs, good practice)
This commit is contained in:
Evan Gates
sin
parent
9048b542c7
commit
639a74a537
68
find.c
68
find.c
@ -40,31 +40,31 @@ typedef struct {
|
||||
/* Information about operators, for lookup table */
|
||||
typedef struct {
|
||||
char *name; /* string representation of op */
|
||||
int type; /* from Tok.type */
|
||||
int prec; /* precedence */
|
||||
int nargs; /* number of arguments (unary or binary) */
|
||||
int lassoc; /* left associative */
|
||||
char type; /* from Tok.type */
|
||||
char prec; /* precedence */
|
||||
char nargs; /* number of arguments (unary or binary) */
|
||||
char lassoc; /* left associative */
|
||||
} Op_info;
|
||||
|
||||
/* Token when lexing/parsing
|
||||
* (although also used for the expression tree) */
|
||||
typedef struct Tok Tok;
|
||||
struct Tok {
|
||||
enum {
|
||||
PRIM = 0, LPAR, RPAR, NOT, AND, OR, END
|
||||
} type;
|
||||
Tok *left, *right; /* if (type == NOT) left = NULL */
|
||||
Extra extra;
|
||||
union {
|
||||
Pri_info *pinfo; /* if (type == PRIM) */
|
||||
Op_info *oinfo;
|
||||
} u;
|
||||
Extra extra;
|
||||
Tok *left, *right; /* if (type == NOT) left = NULL */
|
||||
enum {
|
||||
PRIM = 0, LPAR, RPAR, NOT, AND, OR, END
|
||||
} type;
|
||||
};
|
||||
|
||||
/* structures used for Arg.extra.p and Tok.extra.p */
|
||||
typedef struct {
|
||||
mode_t mode;
|
||||
unsigned char exact;
|
||||
mode_t mode;
|
||||
char exact;
|
||||
} Permarg;
|
||||
|
||||
typedef struct {
|
||||
@ -83,7 +83,7 @@ typedef struct {
|
||||
|
||||
typedef struct {
|
||||
Narg n;
|
||||
unsigned char bytes; /* size is in bytes, not 512 byte sectors */
|
||||
char bytes; /* size is in bytes, not 512 byte sectors */
|
||||
} Sizearg;
|
||||
|
||||
typedef struct {
|
||||
@ -99,8 +99,8 @@ typedef struct {
|
||||
size_t cap; /* capacity of argv */
|
||||
} p; /* plus */
|
||||
} u;
|
||||
char **argv; /* NULL terminated list of arguments (allocated if isplus) */
|
||||
unsigned char isplus; /* -exec + instead of -exec ; */
|
||||
char **argv; /* NULL terminated list of arguments (allocated if isplus) */
|
||||
char isplus; /* -exec + instead of -exec ; */
|
||||
} Execarg;
|
||||
|
||||
/* used to find loops while recursing through directory structure */
|
||||
@ -168,14 +168,14 @@ static int cmp_gt(int a, int b) { return a > b; }
|
||||
static int cmp_eq(int a, int b) { return a == b; }
|
||||
static int cmp_lt(int a, int b) { return a < b; }
|
||||
|
||||
int (*cmps[])(int, int) = {
|
||||
static int (*cmps[])(int, int) = {
|
||||
[GT] = cmp_gt,
|
||||
[EQ] = cmp_eq,
|
||||
[LT] = cmp_lt,
|
||||
};
|
||||
|
||||
/* order from find(1p), may want to alphabetize */
|
||||
Pri_info primaries[] = {
|
||||
static Pri_info primaries[] = {
|
||||
{ "-name" , pri_name , get_name_arg , NULL },
|
||||
{ "-path" , pri_path , get_path_arg , NULL },
|
||||
{ "-nouser" , pri_nouser , NULL , NULL },
|
||||
@ -200,7 +200,7 @@ Pri_info primaries[] = {
|
||||
{ NULL, NULL, NULL, NULL }
|
||||
};
|
||||
|
||||
Op_info ops[] = {
|
||||
static Op_info ops[] = {
|
||||
{ "(" , LPAR, 0, 0, 0 }, /* parens are handled specially */
|
||||
{ ")" , RPAR, 0, 0, 0 },
|
||||
{ "!" , NOT , 3, 1, 0 },
|
||||
@ -212,23 +212,21 @@ Op_info ops[] = {
|
||||
|
||||
extern char **environ;
|
||||
|
||||
Tok *toks; /* holds allocated array of all Toks created while parsing */
|
||||
Tok *root; /* points to root of expression tree, inside toks array */
|
||||
static Tok *toks; /* holds allocated array of all Toks created while parsing */
|
||||
static Tok *root; /* points to root of expression tree, inside toks array */
|
||||
|
||||
struct timespec start; /* time find was started, used for -[acm]time */
|
||||
static struct timespec start; /* time find was started, used for -[acm]time */
|
||||
|
||||
size_t envlen; /* number of bytes in environ, used to calculate against ARG_MAX */
|
||||
size_t argmax; /* value of ARG_MAX retrieved using sysconf(3p) */
|
||||
static size_t envlen; /* number of bytes in environ, used to calculate against ARG_MAX */
|
||||
static size_t argmax; /* value of ARG_MAX retrieved using sysconf(3p) */
|
||||
|
||||
struct {
|
||||
unsigned ret ; /* return value from main */
|
||||
unsigned depth; /* -depth, directory contents before directory itself */
|
||||
unsigned h ; /* -H, follow symlinks on command line */
|
||||
unsigned l ; /* -L, follow all symlinks (command line and search) */
|
||||
unsigned prune; /* hit -prune, eval should return STW_PRUNE (return values
|
||||
traversing expression tree are boolean so we can't
|
||||
easily return this. instead set a global flag) */
|
||||
unsigned xdev ; /* -xdev, prune directories on different devices */
|
||||
static struct {
|
||||
char ret ; /* return value from main */
|
||||
char depth; /* -depth, directory contents before directory itself */
|
||||
char h ; /* -H, follow symlinks on command line */
|
||||
char l ; /* -L, follow all symlinks (command line and search) */
|
||||
char prune; /* hit -prune */
|
||||
char xdev ; /* -xdev, prune directories on different devices */
|
||||
} gflags;
|
||||
|
||||
/*
|
||||
@ -369,7 +367,7 @@ pri_exec(Arg *arg)
|
||||
e->argv[e->u.p.next] = NULL;
|
||||
|
||||
if (!(pid = fork())) { /* child */
|
||||
execv(*e->argv, e->argv);
|
||||
execvp(*e->argv, e->argv);
|
||||
eprintf("exec %s failed:", *e->argv);
|
||||
}
|
||||
waitpid(pid, &status, 0);
|
||||
@ -403,7 +401,7 @@ pri_exec(Arg *arg)
|
||||
**brace = arg->path;
|
||||
|
||||
if (!(pid = fork())) { /* child */
|
||||
execv(*e->argv, e->argv);
|
||||
execvp(*e->argv, e->argv);
|
||||
eprintf("exec %s failed:", *e->argv);
|
||||
}
|
||||
/* FIXME: propper course of action for all waitpid() on EINTR? */
|
||||
@ -440,7 +438,7 @@ pri_ok(Arg *arg)
|
||||
**brace = arg->path;
|
||||
|
||||
if (!(pid = fork())) { /* child */
|
||||
execv(*o->argv, o->argv);
|
||||
execvp(*o->argv, o->argv);
|
||||
eprintf("exec %s failed:", *o->argv);
|
||||
}
|
||||
waitpid(pid, &status, 0);
|
||||
@ -707,7 +705,7 @@ free_exec_arg(Extra extra)
|
||||
pid_t pid = fork();
|
||||
|
||||
if (!pid) { /* child */
|
||||
execv(*e->argv, e->argv);
|
||||
execvp(*e->argv, e->argv);
|
||||
eprintf("exec %s failed:", *e->argv);
|
||||
}
|
||||
waitpid(pid, &status, 0);
|
||||
|
||||
Loading…
Reference in New Issue
Block a user