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| author |   Hartmut Knaack <knaack.h@gmx.de> | 2015-05-31 14:40:04 +0200 |
|---|---|---|
| committer |   Jonathan Cameron <jic23@kernel.org> | 2015-05-31 19:24:18 +0100 |
| commit | 6bb7cac8551e2d60edbd25a6d046cc45932c4c3e (patch) | |
| tree | 34a1b4188e6cc0724095f74e7a298696db45e469 /tools/iio | |
| parent | tools:iio:generic_buffer: catch errors for arguments conversion (diff) | |
| download | wireguard-linux-6bb7cac8551e2d60edbd25a6d046cc45932c4c3e.tar.xz wireguard-linux-6bb7cac8551e2d60edbd25a6d046cc45932c4c3e.zip | |
tools:iio:generic_buffer: add error handling
Add error handling to calls which can indicate a major problem by
returning an error code.
Signed-off-by: Hartmut Knaack <knaack.h@gmx.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Diffstat (limited to 'tools/iio')
| -rw-r--r-- | tools/iio/generic_buffer.c | 18 |
1 files changed, 14 insertions, 4 deletions
diff --git a/tools/iio/generic_buffer.c b/tools/iio/generic_buffer.c index 93ac93f74549..cf9a4120204f 100644 --- a/tools/iio/generic_buffer.c +++ b/tools/iio/generic_buffer.c @@ -347,7 +347,14 @@ int main(int argc, char **argv) .events = POLLIN, }; - poll(&pfd, 1, -1); + ret = poll(&pfd, 1, -1); + if (ret < 0) { + ret = -errno; + goto error_close_buffer_access; + } else if (ret == 0) { + continue; + } + toread = buf_len; } else { @@ -378,11 +385,14 @@ int main(int argc, char **argv) if (!notrigger) /* Disconnect the trigger - just write a dummy name. */ - write_sysfs_string("trigger/current_trigger", - dev_dir_name, "NULL"); + ret = write_sysfs_string("trigger/current_trigger", + dev_dir_name, "NULL"); + if (ret < 0) + printf("Failed to write to %s\n", dev_dir_name); error_close_buffer_access: - close(fp); + if (close(fp) == -1) + perror("Failed to close buffer"); error_free_buffer_access: free(buffer_access); error_free_data: |