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-rw-r--r--applets/usage.c42
-rw-r--r--busybox.def.h2
-rw-r--r--coreutils/tail.c167
-rw-r--r--tail.c167
-rw-r--r--usage.c42
5 files changed, 221 insertions, 199 deletions
diff --git a/applets/usage.c b/applets/usage.c
index 3f367f9b1..1e2eb64cc 100644
--- a/applets/usage.c
+++ b/applets/usage.c
@@ -1017,7 +1017,6 @@ const char syslogd_usage[] =
#endif
#if defined BB_TAIL
-#if defined BB_FEATURE_SIMPLE_TAIL
const char tail_usage[] =
"tail [OPTION] [FILE]...\n"
#ifndef BB_FEATURE_TRIVIAL_HELP
@@ -1025,32 +1024,25 @@ const char tail_usage[] =
"With more than one FILE, precede each with a header giving the\n"
"file name. With no FILE, or when FILE is -, read standard input.\n\n"
"Options:\n"
- "\t-n NUM\t\tPrint last NUM lines instead of first 10\n"
-
- "\t-f\t\tOutput data as the file grows. This version\n"
- "\t\t\tof 'tail -f' supports only one file at a time.\n"
+#ifndef BB_FEATURE_SIMPLE_TAIL
+ "\t-c=N[kbm]\toutput the last N bytes\n"
#endif
- ;
-#else /* ! defined BB_FEATURE_SIMPLE_TAIL */
-const char tail_usage[] =
- "tail [OPTION]... [FILE]...\n"
-#ifndef BB_FEATURE_TRIVIAL_HELP
- "\nPrint last 10 lines of each FILE to standard output.\n"
- "With more than one FILE, precede each with a header giving the file name.\n"
- "With no FILE, or when FILE is -, read standard input.\n"
- "\n"
- " -c=N[kbm] output the last N bytes\n"
- " -f output appended data as the file grows\n"
- " -n=N output the last N lines, instead of last 10\n"
- " -q never output headers giving file names\n"
- " -v always output headers giving file names\n"
- "\n"
+ "\t-n NUM\t\tPrint last NUM lines instead of first 10\n"
+ "\t\t\tAlso can be -NUM or +NUM.\n"
+ "\t-f\t\tOutput data as the file grows.\n"
+#ifndef BB_FEATURE_SIMPLE_TAIL
+ "\t-q\t\tnever output headers giving file names\n"
+ "\t-s SEC\t\tWait SEC seconds between reads with -f\n"
+ "\t-v\t\talways output headers giving file names\n\n"
"If the first character of N (bytes or lines) is a `+', output begins with \n"
"the Nth item from the start of each file, otherwise, print the last N items\n"
- "in the file. N bytes may be suffixed by k (x1024), b (x512), or m (1024^2).\n"
+ "in the file. N bytes may be suffixed by k (x1024), b (x512), or m (1024^2).\n"
+//#else
+// "\nIf the first character of N (bytes or lines) is a `+', output begins with \n"
+// "the Nth item from the start of each file.\n"
#endif
- ;
#endif
+ ;
#endif
#if defined BB_TAR
@@ -1061,9 +1053,9 @@ const char tar_usage[] =
"tar -[xtvO] "
#endif
#if defined BB_FEATURE_TAR_EXCLUDE
- "[--exclude File] "
+ "[-X File(s)] "
#endif
- "[-f tarFile] [FILE] ...\n"
+ "[-f tarFile] [FILE(s)] ...\n"
#ifndef BB_FEATURE_TRIVIAL_HELP
"\nCreate, extract, or list files from a tar file. Note that\n"
"this version of tar treats hard links as separate files.\n\n"
@@ -1077,7 +1069,7 @@ const char tar_usage[] =
"\tf\t\tname of tarfile or \"-\" for stdin\n"
"\tO\t\textract to stdout\n"
#if defined BB_FEATURE_TAR_EXCLUDE
- "\t--exclude\tfile to exclude\n"
+ "\tX\t\tfile(s) to exclude\n"
#endif
"\nInformative output:\n"
"\tv\t\tverbosely list files processed\n"
diff --git a/busybox.def.h b/busybox.def.h
index 41ba0ce85..5adc3e57f 100644
--- a/busybox.def.h
+++ b/busybox.def.h
@@ -190,7 +190,7 @@
// enable syslogd -R remotehost
#define BB_FEATURE_REMOTE_LOG
//
-//Simple tail implementation (2.25k vs 3k for the full one).
+//Simple tail implementation (2.34k vs 3k for the full one).
//Both provide 'tail -f' support (only one file at a time.)
#define BB_FEATURE_SIMPLE_TAIL
//
diff --git a/coreutils/tail.c b/coreutils/tail.c
index 4a1aa8436..156f6368b 100644
--- a/coreutils/tail.c
+++ b/coreutils/tail.c
@@ -47,47 +47,34 @@
static int n_files = 0;
static char **files = NULL;
-
-static char follow=0;
+static char * buffer;
+static ssize_t bytes_read=0;
+static ssize_t bs;
+static ssize_t filelocation=0;
+static char pip;
#ifdef BB_FEATURE_SIMPLE_TAIL
static const char unit_type=LINES;
-static const char sleep_int=1;
#else
static char unit_type=LINES;
-static int sleep_int=1;
static char verbose = 0;
#endif
-//static off_t units=-11;
static off_t units=0;
-int tail_stream(int file_id)
+int tail_stream(int fd)
{
- int fd;
- ssize_t bytes_read=0;
- ssize_t bs=BUFSIZ;
- ssize_t startpoint=bs;
+ ssize_t startpoint;
ssize_t endpoint=0;
ssize_t count=0;
ssize_t filesize=0;
- ssize_t filelocation=0;
char direction=1;
- char * buffer;
- char pipe;
-
- if (!strcmp(files[file_id], STDIN))
- fd = 0;
- else
- fd = open(files[file_id], O_RDONLY);
- if (fd == -1)
- fatalError("Unable to open file %s.\n", files[file_id]);
-
- buffer=malloc(bs);
+ filelocation=0;
+ startpoint=bs=BUFSIZ;
filesize=lseek(fd, -1, SEEK_END)+1;
- pipe=(filesize<=0);
+ pip=(filesize<=0);
if(units>=0)
lseek(fd,0,SEEK_SET);
@@ -96,7 +83,7 @@ int tail_stream(int file_id)
count=1;
}
while(units != 0) {
- if (pipe) {
+ if (pip) {
char * line;
ssize_t f_size=0;
@@ -140,12 +127,12 @@ int tail_stream(int file_id)
#endif
if(buffer[startpoint-1]=='\n')
count++;
- if (!pipe)
+ if (!pip)
filelocation=lseek(fd,0,SEEK_CUR);
- if(count==abs(units))
+ if(count==units*direction)
break;
}
- if((count==abs(units)) | pipe)
+ if((count==units*direction) | pip)
break;
if(direction<0){
filelocation = lseek(fd, -bytes_read, SEEK_CUR);
@@ -153,29 +140,11 @@ int tail_stream(int file_id)
break;
}
}
- if(pipe && (direction<0))
+ if(pip && (direction<0))
bs++;
bytes_read=bs-startpoint;
memcpy(&buffer[0],&buffer[startpoint],bytes_read);
- bs=BUFSIZ;
- while (1) {
- if((filelocation>0 || pipe)){
- write(1,buffer,bytes_read);
- }
- bytes_read = read(fd, buffer, bs);
- filelocation+=bytes_read;
- if (bytes_read <= 0) {
- if (!follow) {
- close(fd);
- break;
- }
- sleep(sleep_int);
- }
- usleep(sleep_int * 1000);
- }
- if (buffer)
- free(buffer);
return 0;
}
@@ -192,33 +161,31 @@ int tail_main(int argc, char **argv)
{
int show_headers = 1;
int test;
- int c;
- int nargs=0;
- char **argn=NULL;
+ int opt;
+ int optc=0;
+ char **optv=NULL;
+ char follow=0;
+ int sleep_int=1;
+ int *fd;
opterr = 0;
- for(c=0;c<argc;c++){
- test=atoi(argv[c]);
+ for(opt=0;opt<argc;opt++){
+ test=atoi(argv[opt]);
if(test){
units=test;
if(units<0)
units=units-1;
}else{
- nargs++;
- argn = realloc(argn, nargs);
- argn[nargs - 1] = (char *) malloc(strlen(argv[c]) + 1);
- strcpy(argn[nargs - 1], argv[c]);
+ optc++;
+ optv = realloc(optv, optc);
+ optv[optc - 1] = (char *) malloc(strlen(argv[opt]) + 1);
+ strcpy(optv[optc - 1], argv[opt]);
}
}
- while (1) {
- int opt_index = 0;
+ while ((opt=getopt(optc,optv,"c:fhn:s:q:v")) >0) {
- c = getopt_long_only(nargs, argn,
- "c:fhn:s:qv", NULL, &opt_index);
- if (c == -1)
- break;
- switch (c) {
+ switch (opt) {
#ifndef BB_FEATURE_SIMPLE_TAIL
@@ -277,37 +244,89 @@ int tail_main(int argc, char **argv)
usage(tail_usage);
break;
default:
- errorMsg("\nUnknown arg: %c.\n\n",c);
+ errorMsg("\nUnknown arg: %c.\n\n",optopt);
usage(tail_usage);
}
}
- while (optind < nargs) {
- if (!strcmp(argn[optind], "-"))
- add_file(STDIN);
- else
- add_file(argn[optind]);
- optind++;
+ while (optind <= optc) {
+ if(optind==optc) {
+ if (n_files==0)
+ add_file(STDIN);
+ else
+ break;
+ }else {
+ if (!strcmp(optv[optind], "-"))
+ add_file(STDIN);
+ else
+ add_file(optv[optind]);
+ optind++;
+ }
}
if(units==0)
units=-11;
if(units>0)
units--;
- if (n_files == 0)
- add_file(STDIN);
+ fd=malloc(sizeof(int)*n_files);
if (n_files == 1)
#ifndef BB_FEATURE_SIMPLE_TAIL
if (!verbose)
#endif
show_headers = 0;
+ buffer=malloc(BUFSIZ);
for (test = 0; test < n_files; test++) {
if (show_headers)
printf("==> %s <==\n", files[test]);
- tail_stream(test);
+ if (!strcmp(files[test], STDIN))
+ fd[test] = 0;
+ else
+ fd[test] = open(files[test], O_RDONLY);
+ if (fd[test] == -1)
+ fatalError("Unable to open file %s.\n", files[test]);
+ tail_stream(fd[test]);
+
+ bs=BUFSIZ;
+ while (1) {
+ if((filelocation>0 || pip)){
+ write(1,buffer,bytes_read);
+ }
+ bytes_read = read(fd[test], buffer, bs);
+ filelocation+=bytes_read;
+ if (bytes_read <= 0) {
+ break;
+ }
+ usleep(sleep_int * 1000);
+ }
+ if(n_files>1)
+ printf("\n");
}
+ while(1){
+ for (test = 0; test < n_files; test++) {
+ if(!follow){
+ close(fd[test]);
+ continue;
+ } else {
+ sleep(sleep_int);
+ bytes_read = read(fd[test], buffer, bs);
+ if(bytes_read>0) {
+ if (show_headers)
+ printf("==> %s <==\n", files[test]);
+ write(1,buffer,bytes_read);
+ if(n_files>1)
+ printf("\n");
+ }
+ }
+ }
+ if(!follow)
+ break;
+ }
+ if (fd)
+ free(fd);
+ if (buffer)
+ free(buffer);
if(files)
free(files);
- if(argn)
- free(argn);
+ if(optv)
+ free(optv);
return 0;
}
diff --git a/tail.c b/tail.c
index 4a1aa8436..156f6368b 100644
--- a/tail.c
+++ b/tail.c
@@ -47,47 +47,34 @@
static int n_files = 0;
static char **files = NULL;
-
-static char follow=0;
+static char * buffer;
+static ssize_t bytes_read=0;
+static ssize_t bs;
+static ssize_t filelocation=0;
+static char pip;
#ifdef BB_FEATURE_SIMPLE_TAIL
static const char unit_type=LINES;
-static const char sleep_int=1;
#else
static char unit_type=LINES;
-static int sleep_int=1;
static char verbose = 0;
#endif
-//static off_t units=-11;
static off_t units=0;
-int tail_stream(int file_id)
+int tail_stream(int fd)
{
- int fd;
- ssize_t bytes_read=0;
- ssize_t bs=BUFSIZ;
- ssize_t startpoint=bs;
+ ssize_t startpoint;
ssize_t endpoint=0;
ssize_t count=0;
ssize_t filesize=0;
- ssize_t filelocation=0;
char direction=1;
- char * buffer;
- char pipe;
-
- if (!strcmp(files[file_id], STDIN))
- fd = 0;
- else
- fd = open(files[file_id], O_RDONLY);
- if (fd == -1)
- fatalError("Unable to open file %s.\n", files[file_id]);
-
- buffer=malloc(bs);
+ filelocation=0;
+ startpoint=bs=BUFSIZ;
filesize=lseek(fd, -1, SEEK_END)+1;
- pipe=(filesize<=0);
+ pip=(filesize<=0);
if(units>=0)
lseek(fd,0,SEEK_SET);
@@ -96,7 +83,7 @@ int tail_stream(int file_id)
count=1;
}
while(units != 0) {
- if (pipe) {
+ if (pip) {
char * line;
ssize_t f_size=0;
@@ -140,12 +127,12 @@ int tail_stream(int file_id)
#endif
if(buffer[startpoint-1]=='\n')
count++;
- if (!pipe)
+ if (!pip)
filelocation=lseek(fd,0,SEEK_CUR);
- if(count==abs(units))
+ if(count==units*direction)
break;
}
- if((count==abs(units)) | pipe)
+ if((count==units*direction) | pip)
break;
if(direction<0){
filelocation = lseek(fd, -bytes_read, SEEK_CUR);
@@ -153,29 +140,11 @@ int tail_stream(int file_id)
break;
}
}
- if(pipe && (direction<0))
+ if(pip && (direction<0))
bs++;
bytes_read=bs-startpoint;
memcpy(&buffer[0],&buffer[startpoint],bytes_read);
- bs=BUFSIZ;
- while (1) {
- if((filelocation>0 || pipe)){
- write(1,buffer,bytes_read);
- }
- bytes_read = read(fd, buffer, bs);
- filelocation+=bytes_read;
- if (bytes_read <= 0) {
- if (!follow) {
- close(fd);
- break;
- }
- sleep(sleep_int);
- }
- usleep(sleep_int * 1000);
- }
- if (buffer)
- free(buffer);
return 0;
}
@@ -192,33 +161,31 @@ int tail_main(int argc, char **argv)
{
int show_headers = 1;
int test;
- int c;
- int nargs=0;
- char **argn=NULL;
+ int opt;
+ int optc=0;
+ char **optv=NULL;
+ char follow=0;
+ int sleep_int=1;
+ int *fd;
opterr = 0;
- for(c=0;c<argc;c++){
- test=atoi(argv[c]);
+ for(opt=0;opt<argc;opt++){
+ test=atoi(argv[opt]);
if(test){
units=test;
if(units<0)
units=units-1;
}else{
- nargs++;
- argn = realloc(argn, nargs);
- argn[nargs - 1] = (char *) malloc(strlen(argv[c]) + 1);
- strcpy(argn[nargs - 1], argv[c]);
+ optc++;
+ optv = realloc(optv, optc);
+ optv[optc - 1] = (char *) malloc(strlen(argv[opt]) + 1);
+ strcpy(optv[optc - 1], argv[opt]);
}
}
- while (1) {
- int opt_index = 0;
+ while ((opt=getopt(optc,optv,"c:fhn:s:q:v")) >0) {
- c = getopt_long_only(nargs, argn,
- "c:fhn:s:qv", NULL, &opt_index);
- if (c == -1)
- break;
- switch (c) {
+ switch (opt) {
#ifndef BB_FEATURE_SIMPLE_TAIL
@@ -277,37 +244,89 @@ int tail_main(int argc, char **argv)
usage(tail_usage);
break;
default:
- errorMsg("\nUnknown arg: %c.\n\n",c);
+ errorMsg("\nUnknown arg: %c.\n\n",optopt);
usage(tail_usage);
}
}
- while (optind < nargs) {
- if (!strcmp(argn[optind], "-"))
- add_file(STDIN);
- else
- add_file(argn[optind]);
- optind++;
+ while (optind <= optc) {
+ if(optind==optc) {
+ if (n_files==0)
+ add_file(STDIN);
+ else
+ break;
+ }else {
+ if (!strcmp(optv[optind], "-"))
+ add_file(STDIN);
+ else
+ add_file(optv[optind]);
+ optind++;
+ }
}
if(units==0)
units=-11;
if(units>0)
units--;
- if (n_files == 0)
- add_file(STDIN);
+ fd=malloc(sizeof(int)*n_files);
if (n_files == 1)
#ifndef BB_FEATURE_SIMPLE_TAIL
if (!verbose)
#endif
show_headers = 0;
+ buffer=malloc(BUFSIZ);
for (test = 0; test < n_files; test++) {
if (show_headers)
printf("==> %s <==\n", files[test]);
- tail_stream(test);
+ if (!strcmp(files[test], STDIN))
+ fd[test] = 0;
+ else
+ fd[test] = open(files[test], O_RDONLY);
+ if (fd[test] == -1)
+ fatalError("Unable to open file %s.\n", files[test]);
+ tail_stream(fd[test]);
+
+ bs=BUFSIZ;
+ while (1) {
+ if((filelocation>0 || pip)){
+ write(1,buffer,bytes_read);
+ }
+ bytes_read = read(fd[test], buffer, bs);
+ filelocation+=bytes_read;
+ if (bytes_read <= 0) {
+ break;
+ }
+ usleep(sleep_int * 1000);
+ }
+ if(n_files>1)
+ printf("\n");
}
+ while(1){
+ for (test = 0; test < n_files; test++) {
+ if(!follow){
+ close(fd[test]);
+ continue;
+ } else {
+ sleep(sleep_int);
+ bytes_read = read(fd[test], buffer, bs);
+ if(bytes_read>0) {
+ if (show_headers)
+ printf("==> %s <==\n", files[test]);
+ write(1,buffer,bytes_read);
+ if(n_files>1)
+ printf("\n");
+ }
+ }
+ }
+ if(!follow)
+ break;
+ }
+ if (fd)
+ free(fd);
+ if (buffer)
+ free(buffer);
if(files)
free(files);
- if(argn)
- free(argn);
+ if(optv)
+ free(optv);
return 0;
}
diff --git a/usage.c b/usage.c
index 3f367f9b1..1e2eb64cc 100644
--- a/usage.c
+++ b/usage.c
@@ -1017,7 +1017,6 @@ const char syslogd_usage[] =
#endif
#if defined BB_TAIL
-#if defined BB_FEATURE_SIMPLE_TAIL
const char tail_usage[] =
"tail [OPTION] [FILE]...\n"
#ifndef BB_FEATURE_TRIVIAL_HELP
@@ -1025,32 +1024,25 @@ const char tail_usage[] =
"With more than one FILE, precede each with a header giving the\n"
"file name. With no FILE, or when FILE is -, read standard input.\n\n"
"Options:\n"
- "\t-n NUM\t\tPrint last NUM lines instead of first 10\n"
-
- "\t-f\t\tOutput data as the file grows. This version\n"
- "\t\t\tof 'tail -f' supports only one file at a time.\n"
+#ifndef BB_FEATURE_SIMPLE_TAIL
+ "\t-c=N[kbm]\toutput the last N bytes\n"
#endif
- ;
-#else /* ! defined BB_FEATURE_SIMPLE_TAIL */
-const char tail_usage[] =
- "tail [OPTION]... [FILE]...\n"
-#ifndef BB_FEATURE_TRIVIAL_HELP
- "\nPrint last 10 lines of each FILE to standard output.\n"
- "With more than one FILE, precede each with a header giving the file name.\n"
- "With no FILE, or when FILE is -, read standard input.\n"
- "\n"
- " -c=N[kbm] output the last N bytes\n"
- " -f output appended data as the file grows\n"
- " -n=N output the last N lines, instead of last 10\n"
- " -q never output headers giving file names\n"
- " -v always output headers giving file names\n"
- "\n"
+ "\t-n NUM\t\tPrint last NUM lines instead of first 10\n"
+ "\t\t\tAlso can be -NUM or +NUM.\n"
+ "\t-f\t\tOutput data as the file grows.\n"
+#ifndef BB_FEATURE_SIMPLE_TAIL
+ "\t-q\t\tnever output headers giving file names\n"
+ "\t-s SEC\t\tWait SEC seconds between reads with -f\n"
+ "\t-v\t\talways output headers giving file names\n\n"
"If the first character of N (bytes or lines) is a `+', output begins with \n"
"the Nth item from the start of each file, otherwise, print the last N items\n"
- "in the file. N bytes may be suffixed by k (x1024), b (x512), or m (1024^2).\n"
+ "in the file. N bytes may be suffixed by k (x1024), b (x512), or m (1024^2).\n"
+//#else
+// "\nIf the first character of N (bytes or lines) is a `+', output begins with \n"
+// "the Nth item from the start of each file.\n"
#endif
- ;
#endif
+ ;
#endif
#if defined BB_TAR
@@ -1061,9 +1053,9 @@ const char tar_usage[] =
"tar -[xtvO] "
#endif
#if defined BB_FEATURE_TAR_EXCLUDE
- "[--exclude File] "
+ "[-X File(s)] "
#endif
- "[-f tarFile] [FILE] ...\n"
+ "[-f tarFile] [FILE(s)] ...\n"
#ifndef BB_FEATURE_TRIVIAL_HELP
"\nCreate, extract, or list files from a tar file. Note that\n"
"this version of tar treats hard links as separate files.\n\n"
@@ -1077,7 +1069,7 @@ const char tar_usage[] =
"\tf\t\tname of tarfile or \"-\" for stdin\n"
"\tO\t\textract to stdout\n"
#if defined BB_FEATURE_TAR_EXCLUDE
- "\t--exclude\tfile to exclude\n"
+ "\tX\t\tfile(s) to exclude\n"
#endif
"\nInformative output:\n"
"\tv\t\tverbosely list files processed\n"
generated by cgit v1.2.3 (git 2.39.1) at 2024-06-28 10:05:57 +0000