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| author | Karel Zak | 2012-11-22 14:36:17 +0100 |
|---|---|---|
| committer | Karel Zak | 2012-11-22 14:40:14 +0100 |
| commit | 1ef28920f802fd076280ce81efd299bd58ad0e17 (patch) | |
| tree | 1ba5d3b1919d5e906e6ef486e5ccd6a418191ece /lib/ttyutils.c | |
| parent | lib/ttyutils: add test program (diff) | |
| download | kernel-qcow2-util-linux-1ef28920f802fd076280ce81efd299bd58ad0e17.tar.gz kernel-qcow2-util-linux-1ef28920f802fd076280ce81efd299bd58ad0e17.tar.xz kernel-qcow2-util-linux-1ef28920f802fd076280ce81efd299bd58ad0e17.zip | |
lib/ttyutils: add get_terminal_name()
Signed-off-by: Karel Zak <kzak@redhat.com>
Diffstat (limited to 'lib/ttyutils.c')
| -rw-r--r-- | lib/ttyutils.c | 45 |
1 files changed, 43 insertions, 2 deletions
diff --git a/lib/ttyutils.c b/lib/ttyutils.c index 39d0516ca..15d538946 100644 --- a/lib/ttyutils.c +++ b/lib/ttyutils.c @@ -37,12 +37,53 @@ int get_terminal_width(void) return 0; } +int get_terminal_name(const char **path, + const char **name, + const char **number) +{ + const char *tty; + const char *p; + + if (name) + *name = NULL; + if (path) + *path = NULL; + if (number) + *number = NULL; + + tty = ttyname(STDERR_FILENO); + if (!tty) + return -1; + if (path) + *path = tty; + tty = strncmp(tty, "/dev/", 5) == 0 ? tty + 5 : tty; + if (name) + *name = tty; + if (number) { + for (p = tty; p && *p; p++) { + if (isdigit(*p)) { + *number = p; + break; + } + } + } + return 0; +} + + #ifdef TEST_PROGRAM # include <stdlib.h> - int main(void) { - fprintf(stderr, "tty width: %d\n", get_terminal_width()); + const char *path, *name, *num; + + if (get_terminal_name(&path, &name, &num) == 0) { + fprintf(stderr, "tty path: %s\n", path); + fprintf(stderr, "tty name: %s\n", name); + fprintf(stderr, "tty number: %s\n", num); + } + fprintf(stderr, "tty width: %d\n", get_terminal_width()); + return EXIT_SUCCESS; } #endif |