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f62ab2d77

Denis Vlasenko
Denis Vlasenko
2008-07-09
FAILED Duration: 26s

Subject

libbb: use improved xmalloc_read() from modprobe-small who: fix compile breakage on some systems modprobe-small: improve Config help text wording

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Architecture & Compiler Flags

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

—

Build Log

(log yok)

Commit Diff GitHub →

coreutils/who.c +5 -1include/libbb.h +1 -0libbb/read.c +56 -76modutils/Config.in +1 -1modutils/modprobe-small.c +0 -48
coreutils/who.c+5 -1
@@ -56,16 +56,20 @@ int who_main(int argc UNUSED_PARAM, char **argv)
printf("USER TTY IDLE TIME HOST\n");
while ((ut = getutent()) != NULL) {
if (ut->ut_user[0] && (opt || ut->ut_type == USER_PROCESS)) {
+ time_t tmp;
/* ut->ut_line is device name of tty - "/dev/" */
name = concat_path_file("/dev", ut->ut_line);
str6[0] = '?';
str6[1] = '\0';
if (stat(name, &st) == 0)
idle_string(str6, st.st_atime);
+ /* manpages say ut_tv.tv_sec *is* time_t,
+ * but some systems have it wrong */
+ tmp = ut->ut_tv.tv_sec;
/* 15 chars for time: Nov 10 19:33:20 */
printf("%-10s %-8s %-9s %-15.15s %s\n",
ut->ut_user, ut->ut_line, str6,
- ctime(&(ut->ut_tv.tv_sec)) + 4, ut->ut_host);
+ ctime(&tmp) + 4, ut->ut_host);
if (ENABLE_FEATURE_CLEAN_UP)
free(name);
}
include/libbb.h+1 -0
@@ -589,6 +589,7 @@ extern char *reads(int fd, char *buf, size_t count) FAST_FUNC;
extern char *xmalloc_reads(int fd, char *pfx, size_t *maxsz_p) FAST_FUNC;
extern ssize_t read_close(int fd, void *buf, size_t maxsz) FAST_FUNC;
extern ssize_t open_read_close(const char *filename, void *buf, size_t maxsz) FAST_FUNC;
+extern void *xmalloc_read(int fd, size_t *sizep) FAST_FUNC;
/* Returns NULL if file can't be opened */
extern void *xmalloc_open_read_close(const char *filename, size_t *maxsz_p) FAST_FUNC;
/* Never returns NULL */
libbb/read.c+56 -76
@@ -106,7 +106,7 @@ ssize_t FAST_FUNC full_read(int fd, void *buf, size_t len)
return total;
}
-// Die with an error message if we can't read the entire buffer.
+/* Die with an error message if we can't read the entire buffer. */
void FAST_FUNC xread(int fd, void *buf, size_t count)
{
if (count) {
@@ -116,7 +116,7 @@ void FAST_FUNC xread(int fd, void *buf, size_t count)
}
}
-// Die with an error message if we can't read one character.
+/* Die with an error message if we can't read one character. */
unsigned char FAST_FUNC xread_char(int fd)
{
char tmp;
@@ -124,7 +124,7 @@ unsigned char FAST_FUNC xread_char(int fd)
return tmp;
}
-// Read one line a-la fgets. Works only on seekable streams
+/* Read one line a-la fgets. Works only on seekable streams */
char* FAST_FUNC reads(int fd, char *buffer, size_t size)
{
char *p;
@@ -140,9 +140,9 @@ char* FAST_FUNC reads(int fd, char *buffer, size_t size)
if (p) {
off_t offset;
*p++ = '\0';
- // avoid incorrect (unsigned) widening
+ /* avoid incorrect (unsigned) widening */
offset = (off_t)(p - buffer) - (off_t)size;
- // set fd position right after '\n'
+ /* set fd position right after '\n' */
if (offset && lseek(fd, offset, SEEK_CUR) == (off_t)-1)
return NULL;
}
@@ -203,39 +203,52 @@ ssize_t FAST_FUNC open_read_close(const char *filename, void *buf, size_t size)
return read_close(fd, buf, size);
}
+
// Read (potentially big) files in one go. File size is estimated
-// by stat.
-void* FAST_FUNC xmalloc_open_read_close(const char *filename, size_t *sizep)
+// by stat. Extra '\0' byte is appended.
+void* FAST_FUNC xmalloc_read(int fd, size_t *sizep)
{
char *buf;
- size_t size;
- int fd;
- off_t len;
+ size_t size, rd_size, total;
+ off_t to_read;
struct stat st;
- fd = open(filename, O_RDONLY);
- if (fd < 0)
- return NULL;
+ to_read = sizep ? *sizep : MAXINT(ssize_t); /* max to read */
- st.st_size = 0; /* in case fstat fail, define to 0 */
+ /* Estimate file size */
+ st.st_size = 0; /* in case fstat fails, assume 0 */
fstat(fd, &st);
- /* /proc/N/stat files report len 0 here */
+ /* /proc/N/stat files report st_size 0 */
/* In order to make such files readable, we add small const */
- len = st.st_size | 0x3ff; /* read only 1k on unseekable files */
- size = sizep ? *sizep : INT_MAX;
- if (len < size)
- size = len;
- buf = xmalloc(size + 1);
- size = read_close(fd, buf, size);
- if ((ssize_t)size < 0) {
- free(buf);
- return NULL;
+ size = (st.st_size | 0x3ff) + 1;
+
+ total = 0;
+ buf = NULL;
+ while (1) {
+ if (to_read < size)
+ size = to_read;
+ buf = xrealloc(buf, total + size + 1);
+ rd_size = full_read(fd, buf + total, size);
+ if ((ssize_t)rd_size < 0) { /* error */
+ free(buf);
+ return NULL;
+ }
+ total += rd_size;
+ if (rd_size < size) /* EOF */
+ break;
+ to_read -= rd_size;
+ if (to_read <= 0)
+ break;
+ /* grow by 1/8, but in [1k..64k] bounds */
+ size = ((total / 8) | 0x3ff) + 1;
+ if (size > 64*1024)
+ size = 64*1024;
}
- xrealloc(buf, size + 1);
- buf[size] = '\0';
+ xrealloc(buf, total + 1);
+ buf[total] = '\0';
if (sizep)
- *sizep = size;
+ *sizep = total;
return buf;
}
@@ -284,59 +297,26 @@ void* FAST_FUNC xmalloc_open_read_close(const char *filename, size_t *sizep)
}
#endif
-void* FAST_FUNC xmalloc_xopen_read_close(const char *filename, size_t *sizep)
-{
- void *buf = xmalloc_open_read_close(filename, sizep);
- if (!buf)
- bb_perror_msg_and_die("can't read '%s'", filename);
- return buf;
-}
-
-/* libbb candidate */
-#if 0
-static void *xmalloc_read(int fd, size_t *sizep)
+// Read (potentially big) files in one go. File size is estimated
+// by stat.
+void* FAST_FUNC xmalloc_open_read_close(const char *filename, size_t *sizep)
{
char *buf;
- size_t size, rd_size, total;
- off_t to_read;
- struct stat st;
-
- to_read = sizep ? *sizep : INT_MAX; /* max to read */
+ int fd;
- /* Estimate file size */
- st.st_size = 0; /* in case fstat fails, assume 0 */
- fstat(fd, &st);
- /* /proc/N/stat files report st_size 0 */
- /* In order to make such files readable, we add small const */
- size = (st.st_size | 0x3ff) + 1;
+ fd = open(filename, O_RDONLY);
+ if (fd < 0)
+ return NULL;
- total = 0;
- buf = NULL;
- while (1) {
- if (to_read < size)
- size = to_read;
- buf = xrealloc(buf, total + size + 1);
- rd_size = full_read(fd, buf + total, size);
- if ((ssize_t)rd_size < 0) { /* error */
- free(buf);
- return NULL;
- }
- total += rd_size;
- if (rd_size < size) /* EOF */
- break;
- to_read -= rd_size;
- if (to_read <= 0)
- break;
- /* grow by 1/8, but in [1k..64k] bounds */
- size = ((total / 8) | 0x3ff) + 1;
- if (size > 64*1024)
- size = 64*1024;
- }
- xrealloc(buf, total + 1);
- buf[total] = '\0';
+ buf = xmalloc_read(fd, sizep);
+ close(fd);
+ return buf;
+}
- if (sizep)
- *sizep = total;
+void* FAST_FUNC xmalloc_xopen_read_close(const char *filename, size_t *sizep)
+{
+ void *buf = xmalloc_open_read_close(filename, sizep);
+ if (!buf)
+ bb_perror_msg_and_die("can't read '%s'", filename);
return buf;
}
-#endif
modutils/Config.in+1 -1
@@ -31,7 +31,7 @@ config MODPROBE_SMALL
than "non-small" modutils.
config FEATURE_MODPROBE_SMALL_OPTIONS_ON_CMDLINE
- bool "module options on cmdline"
+ bool "Accept module options on modprobe command line"
default n
depends on MODPROBE_SMALL
help
modutils/modprobe-small.c+0 -48
@@ -14,54 +14,6 @@
#include <sys/utsname.h> /* uname() */
#include <fnmatch.h>
-/* libbb candidate */
-static void *xmalloc_read(int fd, size_t *sizep)
-{
- char *buf;
- size_t size, rd_size, total;
- off_t to_read;
- struct stat st;
-
- to_read = sizep ? *sizep : INT_MAX; /* max to read */
-
- /* Estimate file size */
- st.st_size = 0; /* in case fstat fails, assume 0 */
- fstat(fd, &st);
- /* /proc/N/stat files report st_size 0 */
- /* In order to make such files readable, we add small const */
- size = (st.st_size | 0x3ff) + 1;
-
- total = 0;
- buf = NULL;
- while (1) {
- if (to_read < size)
- size = to_read;
- buf = xrealloc(buf, total + size + 1);
- rd_size = full_read(fd, buf + total, size);
- if ((ssize_t)rd_size < 0) { /* error */
- free(buf);
- return NULL;
- }
- total += rd_size;
- if (rd_size < size) /* EOF */
- break;
- to_read -= rd_size;
- if (to_read <= 0)
- break;
- /* grow by 1/8, but in [1k..64k] bounds */
- size = ((total / 8) | 0x3ff) + 1;
- if (size > 64*1024)
- size = 64*1024;
- }
- xrealloc(buf, total + 1);
- buf[total] = '\0';
-
- if (sizep)
- *sizep = total;
- return buf;
-}
-
-
#define dbg1_error_msg(...) ((void)0)
#define dbg2_error_msg(...) ((void)0)
//#define dbg1_error_msg(...) bb_error_msg(__VA_ARGS__)