diff options
| author | lns <matzeton@googlemail.com> | 2019-10-14 00:54:40 +0200 |
|---|---|---|
| committer | lns <matzeton@googlemail.com> | 2019-10-14 00:54:40 +0200 |
| commit | cc277f3e182c33fdd0a991d8e83048cc9d47fdef (patch) | |
| tree | 87c773738d5881c047bc142e212138717ab5e3b4 | |
| parent | 320e2466a8bbcbdc75c5fc1f8221e7f86094c93a (diff) | |
| parent | 4a3e6abc7da8eb8306e7d401be9415117b463401 (diff) | |
Merge branch 'master' of https://github.com/lnslbrty/tools
| -rw-r--r-- | Makefile | 9 | ||||
| -rw-r--r-- | progressbar.c | 105 |
2 files changed, 113 insertions, 1 deletions
@@ -4,7 +4,7 @@ CFLAGS := -O2 -g -Wall -ffunction-sections -fdata-sections -ffast-math -fomit-fr LDFLAGS := RM := rm -rf -TARGETS := aes asciihexer dummyshell suidcmd scrambler textify +TARGETS := aes asciihexer dummyshell suidcmd scrambler textify progressbar ifneq ($(strip $(MAKE_NCURSES)),) TARGETS += gol @@ -69,6 +69,13 @@ xdiff: xdiff.o @echo 'Finished building target: $@' @echo ' ' +progressbar: progressbar.o + @echo 'Building target: $@' + @echo 'Invoking: GCC C Linker' + $(CC) $(LDFLAGS) -o "$@" "$<" + @echo 'Finished building target: $@' + @echo ' ' + strip: strip -s $(TARGETS) diff --git a/progressbar.c b/progressbar.c new file mode 100644 index 0000000..a8c183e --- /dev/null +++ b/progressbar.c @@ -0,0 +1,105 @@ +#define _DEFAULT_SOURCE +#include <dirent.h> +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> +#include <errno.h> + +struct filtered_dir_entries { + struct dirent ** entries; + size_t entries_num; +}; + + +static int search_dir(const char * const dir, + int (*filter_fn)(const struct dirent *), + struct filtered_dir_entries * const entries) +{ + struct dirent **names; + int n; + + n = scandir(dir, &names, filter_fn, alphasort); + if (n < 0) { + perror("scandir"); + return 1; + } + + entries->entries = names; + entries->entries_num = n; + + return 0; +} + +static int dirent_filter_only_numeric(const struct dirent * ent) +{ + char * end_ptr; + + errno = 0; + strtoul(ent->d_name, &end_ptr, 10); + return (errno != 0 || *end_ptr == '\0'); +} + +static int search_procfs_fd(const char * const dir, const char * const subdir, + struct filtered_dir_entries * const entries) +{ + char buf[BUFSIZ]; + + snprintf(buf, sizeof buf, "%s/%s/fd", dir ,subdir); + return search_dir(buf, dirent_filter_only_numeric, entries); +} + +static ssize_t realpath_procfs_fd(const char * const dir, const char * const pid, + const char * const fd, char * dest, size_t siz) +{ + char buf[BUFSIZ]; + + snprintf(buf, sizeof buf, "%s/%s/fd/%s", dir, pid, fd); + return readlink(buf, dest, siz); +} + +static void free_filtered_dir_entries(struct filtered_dir_entries * const entries) +{ + if (!entries->entries) { + return; + } + for (size_t i = 0; i < entries->entries_num; ++i) { + free(entries->entries[i]); + } + free(entries->entries); + entries->entries = NULL; + entries->entries_num = 0; +} + +int main(int argc, char **argv) +{ + struct filtered_dir_entries proc_pid_entries = {}; + struct filtered_dir_entries proc_fd_entries = {}; + ssize_t realpath_used; + char realpath[BUFSIZ]; + + (void) argc; + (void) argv; + + if (search_dir("/proc", dirent_filter_only_numeric, &proc_pid_entries)) { + exit(EXIT_FAILURE); + } + for (size_t i = 0; i < proc_pid_entries.entries_num; ++i) { + if (search_procfs_fd("/proc", proc_pid_entries.entries[i]->d_name, + &proc_fd_entries)) { + continue; + } + + for (size_t j = 0; j < proc_fd_entries.entries_num; ++j) { + realpath_used = realpath_procfs_fd("/proc", + proc_pid_entries.entries[i]->d_name, + proc_fd_entries.entries[j]->d_name, + &realpath[0], sizeof realpath); + if (realpath_used < 0) { + continue; + } + printf("%s: __%.*s__\n", proc_pid_entries.entries[i]->d_name, (int)realpath_used, realpath); + } + free_filtered_dir_entries(&proc_fd_entries); + } + free_filtered_dir_entries(&proc_pid_entries); +} |