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-rw-r--r--Makefile5
-rw-r--r--src/config.h15
-rw-r--r--src/eval.c8
-rw-r--r--src/printf.c67
4 files changed, 65 insertions, 30 deletions
diff --git a/Makefile b/Makefile
index a1144c9..afd3c77 100644
--- a/Makefile
+++ b/Makefile
@@ -46,11 +46,12 @@ OBJ := $(BUILDDIR)/obj
DEFAULT_CFLAGS := \
-g \
-Wall \
+ -Wformat=2 \
+ -Wimplicit-fallthrough \
-Wmissing-declarations \
-Wshadow \
-Wsign-compare \
- -Wstrict-prototypes \
- -Wimplicit-fallthrough
+ -Wstrict-prototypes
CFLAGS ?= $(DEFAULT_CFLAGS)
LDFLAGS ?=
diff --git a/src/config.h b/src/config.h
index 4a49b75..229f593 100644
--- a/src/config.h
+++ b/src/config.h
@@ -198,4 +198,19 @@
# define BFS_TARGET_CLONES true
#endif
+/**
+ * Ignore a particular GCC warning for a region of code.
+ */
+#if __GNUC__
+# define BFS_PRAGMA_STRINGIFY(...) _Pragma(#__VA_ARGS__)
+# define BFS_SUPPRESS(warning) \
+ _Pragma("GCC diagnostic push"); \
+ BFS_PRAGMA_STRINGIFY(GCC diagnostic ignored warning)
+# define BFS_UNSUPPRESS() \
+ _Pragma("GCC diagnostic pop")
+#else
+# define BFS_SUPPRESS(warning)
+# define BFS_UNSUPPRESS()
+#endif
+
#endif // BFS_CONFIG_H
diff --git a/src/eval.c b/src/eval.c
index e3257ce..89591b2 100644
--- a/src/eval.c
+++ b/src/eval.c
@@ -716,11 +716,13 @@ bool eval_fls(const struct bfs_expr *expr, struct bfs_eval *state) {
goto error;
}
char time_str[256];
- const char *time_format = "%b %e %H:%M";
+ size_t time_ret;
if (time <= six_months_ago || time >= tomorrow) {
- time_format = "%b %e %Y";
+ time_ret = strftime(time_str, sizeof(time_str), "%b %e %Y", &tm);
+ } else {
+ time_ret = strftime(time_str, sizeof(time_str), "%b %e %H:%M", &tm);
}
- if (!strftime(time_str, sizeof(time_str), time_format, &tm)) {
+ if (time_ret == 0) {
errno = EOVERFLOW;
goto error;
}
diff --git a/src/printf.c b/src/printf.c
index 6a7b9a9..5af8362 100644
--- a/src/printf.c
+++ b/src/printf.c
@@ -91,6 +91,21 @@ static bool should_color(CFILE *cfile, const struct bfs_printf *directive) {
assert(ret >= 0 && (size_t)ret < sizeof(buf)); \
(void)ret
+/**
+ * Common entry point for fprintf() with a dynamic format string.
+ */
+static int dyn_fprintf(FILE *file, const struct bfs_printf *directive, ...) {
+ va_list args;
+ va_start(args, directive);
+
+ BFS_SUPPRESS("-Wformat-nonliteral");
+ int ret = vfprintf(file, directive->str, args);
+ BFS_UNSUPPRESS();
+
+ va_end(args);
+ return ret;
+}
+
/** %a, %c, %t: ctime() */
static int bfs_printf_ctime(CFILE *cfile, const struct bfs_printf *directive, const struct BFTW *ftwbuf) {
// Not using ctime() itself because GNU find adds nanoseconds
@@ -122,7 +137,7 @@ static int bfs_printf_ctime(CFILE *cfile, const struct bfs_printf *directive, co
(long)ts->tv_nsec,
1900 + tm.tm_year);
- return fprintf(cfile->file, directive->str, buf);
+ return dyn_fprintf(cfile->file, directive, buf);
}
/** %A, %B/%W, %C, %T: strftime() */
@@ -183,14 +198,16 @@ static int bfs_printf_strftime(CFILE *cfile, const struct bfs_printf *directive,
// POSIX strftime() features
default:
format[1] = directive->c;
+ BFS_SUPPRESS("-Wformat-nonliteral");
ret = strftime(buf, sizeof(buf), format, &tm);
+ BFS_UNSUPPRESS();
break;
}
assert(ret >= 0 && (size_t)ret < sizeof(buf));
(void)ret;
- return fprintf(cfile->file, directive->str, buf);
+ return dyn_fprintf(cfile->file, directive, buf);
}
/** %b: blocks */
@@ -202,12 +219,12 @@ static int bfs_printf_b(CFILE *cfile, const struct bfs_printf *directive, const
uintmax_t blocks = ((uintmax_t)statbuf->blocks*BFS_STAT_BLKSIZE + 511)/512;
BFS_PRINTF_BUF(buf, "%ju", blocks);
- return fprintf(cfile->file, directive->str, buf);
+ return dyn_fprintf(cfile->file, directive, buf);
}
/** %d: depth */
static int bfs_printf_d(CFILE *cfile, const struct bfs_printf *directive, const struct BFTW *ftwbuf) {
- return fprintf(cfile->file, directive->str, (intmax_t)ftwbuf->depth);
+ return dyn_fprintf(cfile->file, directive, (intmax_t)ftwbuf->depth);
}
/** %D: device */
@@ -218,7 +235,7 @@ static int bfs_printf_D(CFILE *cfile, const struct bfs_printf *directive, const
}
BFS_PRINTF_BUF(buf, "%ju", (uintmax_t)statbuf->dev);
- return fprintf(cfile->file, directive->str, buf);
+ return dyn_fprintf(cfile->file, directive, buf);
}
/** %f: file name */
@@ -226,7 +243,7 @@ static int bfs_printf_f(CFILE *cfile, const struct bfs_printf *directive, const
if (should_color(cfile, directive)) {
return cfprintf(cfile, "%pF", ftwbuf);
} else {
- return fprintf(cfile->file, directive->str, ftwbuf->path + ftwbuf->nameoff);
+ return dyn_fprintf(cfile->file, directive, ftwbuf->path + ftwbuf->nameoff);
}
}
@@ -238,7 +255,7 @@ static int bfs_printf_F(CFILE *cfile, const struct bfs_printf *directive, const
}
const char *type = bfs_fstype(directive->ptr, statbuf);
- return fprintf(cfile->file, directive->str, type);
+ return dyn_fprintf(cfile->file, directive, type);
}
/** %G: gid */
@@ -249,7 +266,7 @@ static int bfs_printf_G(CFILE *cfile, const struct bfs_printf *directive, const
}
BFS_PRINTF_BUF(buf, "%ju", (uintmax_t)statbuf->gid);
- return fprintf(cfile->file, directive->str, buf);
+ return dyn_fprintf(cfile->file, directive, buf);
}
/** %g: group name */
@@ -265,7 +282,7 @@ static int bfs_printf_g(CFILE *cfile, const struct bfs_printf *directive, const
return bfs_printf_G(cfile, directive, ftwbuf);
}
- return fprintf(cfile->file, directive->str, grp->gr_name);
+ return dyn_fprintf(cfile->file, directive, grp->gr_name);
}
/** %h: leading directories */
@@ -294,7 +311,7 @@ static int bfs_printf_h(CFILE *cfile, const struct bfs_printf *directive, const
if (should_color(cfile, directive)) {
ret = cfprintf(cfile, "${di}%s${rs}", buf);
} else {
- ret = fprintf(cfile->file, directive->str, buf);
+ ret = dyn_fprintf(cfile->file, directive, buf);
}
free(copy);
@@ -310,7 +327,7 @@ static int bfs_printf_H(CFILE *cfile, const struct bfs_printf *directive, const
return cfprintf(cfile, "${di}%s${rs}", ftwbuf->root);
}
} else {
- return fprintf(cfile->file, directive->str, ftwbuf->root);
+ return dyn_fprintf(cfile->file, directive, ftwbuf->root);
}
}
@@ -322,7 +339,7 @@ static int bfs_printf_i(CFILE *cfile, const struct bfs_printf *directive, const
}
BFS_PRINTF_BUF(buf, "%ju", (uintmax_t)statbuf->ino);
- return fprintf(cfile->file, directive->str, buf);
+ return dyn_fprintf(cfile->file, directive, buf);
}
/** %k: 1K blocks */
@@ -334,7 +351,7 @@ static int bfs_printf_k(CFILE *cfile, const struct bfs_printf *directive, const
uintmax_t blocks = ((uintmax_t)statbuf->blocks*BFS_STAT_BLKSIZE + 1023)/1024;
BFS_PRINTF_BUF(buf, "%ju", blocks);
- return fprintf(cfile->file, directive->str, buf);
+ return dyn_fprintf(cfile->file, directive, buf);
}
/** %l: link target */
@@ -356,7 +373,7 @@ static int bfs_printf_l(CFILE *cfile, const struct bfs_printf *directive, const
}
}
- int ret = fprintf(cfile->file, directive->str, target);
+ int ret = dyn_fprintf(cfile->file, directive, target);
free(buf);
return ret;
}
@@ -368,7 +385,7 @@ static int bfs_printf_m(CFILE *cfile, const struct bfs_printf *directive, const
return -1;
}
- return fprintf(cfile->file, directive->str, (unsigned int)(statbuf->mode & 07777));
+ return dyn_fprintf(cfile->file, directive, (unsigned int)(statbuf->mode & 07777));
}
/** %M: symbolic mode */
@@ -380,7 +397,7 @@ static int bfs_printf_M(CFILE *cfile, const struct bfs_printf *directive, const
char buf[11];
xstrmode(statbuf->mode, buf);
- return fprintf(cfile->file, directive->str, buf);
+ return dyn_fprintf(cfile->file, directive, buf);
}
/** %n: link count */
@@ -391,7 +408,7 @@ static int bfs_printf_n(CFILE *cfile, const struct bfs_printf *directive, const
}
BFS_PRINTF_BUF(buf, "%ju", (uintmax_t)statbuf->nlink);
- return fprintf(cfile->file, directive->str, buf);
+ return dyn_fprintf(cfile->file, directive, buf);
}
/** %p: full path */
@@ -399,7 +416,7 @@ static int bfs_printf_p(CFILE *cfile, const struct bfs_printf *directive, const
if (should_color(cfile, directive)) {
return cfprintf(cfile, "%pP", ftwbuf);
} else {
- return fprintf(cfile->file, directive->str, ftwbuf->path);
+ return dyn_fprintf(cfile->file, directive, ftwbuf->path);
}
}
@@ -420,7 +437,7 @@ static int bfs_printf_P(CFILE *cfile, const struct bfs_printf *directive, const
copybuf.nameoff -= offset;
return cfprintf(cfile, "%pP", &copybuf);
} else {
- return fprintf(cfile->file, directive->str, ftwbuf->path + offset);
+ return dyn_fprintf(cfile->file, directive, ftwbuf->path + offset);
}
}
@@ -432,7 +449,7 @@ static int bfs_printf_s(CFILE *cfile, const struct bfs_printf *directive, const
}
BFS_PRINTF_BUF(buf, "%ju", (uintmax_t)statbuf->size);
- return fprintf(cfile->file, directive->str, buf);
+ return dyn_fprintf(cfile->file, directive, buf);
}
/** %S: sparseness */
@@ -448,7 +465,7 @@ static int bfs_printf_S(CFILE *cfile, const struct bfs_printf *directive, const
} else {
sparsity = (double)BFS_STAT_BLKSIZE*statbuf->blocks/statbuf->size;
}
- return fprintf(cfile->file, directive->str, sparsity);
+ return dyn_fprintf(cfile->file, directive, sparsity);
}
/** %U: uid */
@@ -459,7 +476,7 @@ static int bfs_printf_U(CFILE *cfile, const struct bfs_printf *directive, const
}
BFS_PRINTF_BUF(buf, "%ju", (uintmax_t)statbuf->uid);
- return fprintf(cfile->file, directive->str, buf);
+ return dyn_fprintf(cfile->file, directive, buf);
}
/** %u: user name */
@@ -475,7 +492,7 @@ static int bfs_printf_u(CFILE *cfile, const struct bfs_printf *directive, const
return bfs_printf_U(cfile, directive, ftwbuf);
}
- return fprintf(cfile->file, directive->str, pwd->pw_name);
+ return dyn_fprintf(cfile->file, directive, pwd->pw_name);
}
static const char *bfs_printf_type(enum bfs_type type) {
@@ -504,7 +521,7 @@ static const char *bfs_printf_type(enum bfs_type type) {
/** %y: type */
static int bfs_printf_y(CFILE *cfile, const struct bfs_printf *directive, const struct BFTW *ftwbuf) {
const char *type = bfs_printf_type(ftwbuf->type);
- return fprintf(cfile->file, directive->str, type);
+ return dyn_fprintf(cfile->file, directive, type);
}
/** %Y: target type */
@@ -536,7 +553,7 @@ static int bfs_printf_Y(CFILE *cfile, const struct bfs_printf *directive, const
}
}
- int ret = fprintf(cfile->file, directive->str, type);
+ int ret = dyn_fprintf(cfile->file, directive, type);
if (error != 0) {
ret = -1;
errno = error;
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-25 07:12:44 +0000