vasilito
f31522130f
Build system (5 gaps hardened): - COOKBOOK_OFFLINE defaults to true (fork-mode) - normalize_patch handles diff -ruN format - New 'repo validate-patches' command (25/25 relibc patches) - 14 patched Qt/Wayland/display recipes added to protected list - relibc archive regenerated with current patch chain Boot fixes (fixable): - Full ISO EFI partition: 16 MiB → 1 MiB (matches mini, BIOS hardcoded 2 MiB offset) - D-Bus system bus: absolute /usr/bin/dbus-daemon path (was skipped) - redbear-sessiond: absolute /usr/bin/redbear-sessiond path (was skipped) - daemon framework: silenced spurious INIT_NOTIFY warnings for oneshot_async services (P0-daemon-silence-init-notify.patch) - udev-shim: demoted INIT_NOTIFY warning to INFO (expected for oneshot_async) - relibc: comprehensive named semaphores (sem_open/close/unlink) replacing upstream todo!() stubs - greeterd: Wayland socket timeout 15s → 30s (compositor DRM wait) - greeter-ui: built and linked (header guard unification, sem_compat stubs removed) - mc: un-ignored in both configs, fixed glib/libiconv/pcre2 transitive deps - greeter config: removed stale keymapd dependency from display/greeter services - prefix toolchain: relibc headers synced, _RELIBC_STDLIB_H guard unified Unfixable (diagnosed, upstream): - i2c-hidd: abort on no-I2C-hardware (QEMU) — process::exit → relibc abort - kded6/greeter-ui: page fault 0x8 — Qt library null deref - Thread panics fd != -1 — Rust std library on Redox - DHCP timeout / eth0 MAC — QEMU user-mode networking - hwrngd/thermald — no hardware RNG/thermal in VM - live preload allocation — BIOS memory fragmentation, continues on demand
93 lines
2.7 KiB
ReStructuredText
93 lines
2.7 KiB
ReStructuredText
===================
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drmModeGetResources
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===================
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--------------------------------------------------
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retrieve current display configuration information
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--------------------------------------------------
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:Date: September 2012
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:Manual section: 3
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:Manual group: Direct Rendering Manager
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Synopsis
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========
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``#include <xf86drm.h>``
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``#include <xf86drmMode.h>``
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``drmModeResPtr drmModeGetResources(int fd);``
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Description
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===========
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``drmModeGetResources`` allocates, populates, and returns a drmModeRes
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structure containing information about the current display
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configuration. The structure contains the following fields:
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::
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typedef struct _drmModeRes {
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int count_fbs;
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uint32_t *fbs;
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int count_crtcs;
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uint32_t *crtcs;
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int count_connectors;
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uint32_t *connectors;
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int count_encoders;
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uint32_t *encoders;
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uint32_t min_width, max_width;
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uint32_t min_height, max_height;
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} drmModeRes, *drmModeResPtr;
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The *count_fbs* and *fbs* fields indicate the number of currently allocated
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framebuffer objects (i.e., objects that can be attached to a given CRTC
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or sprite for display).
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The *count_crtcs* and *crtcs* fields list the available CRTCs in the
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configuration. A CRTC is simply an object that can scan out a
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framebuffer to a display sink, and contains mode timing and relative
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position information. CRTCs drive encoders, which are responsible for
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converting the pixel stream into a specific display protocol (e.g., MIPI
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or HDMI).
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The *count_connectors* and *connectors* fields list the available physical
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connectors on the system. Note that some of these may not be exposed
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from the chassis (e.g., LVDS or eDP). Connectors are attached to
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encoders and contain information about the attached display sink (e.g.,
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width and height in mm, subpixel ordering, and various other
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properties).
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The *count_encoders* and *encoders* fields list the available encoders on
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the device. Each encoder may be associated with a CRTC, and may be used
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to drive a particular encoder.
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The *min_\** and *max_\** fields indicate the maximum size of a framebuffer
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for this device (i.e., the scanout size limit).
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Return Value
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============
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``drmModeGetResources`` returns a drmModeRes structure pointer on
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success, NULL on failure. The returned structure must be freed with
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**drmModeFreeResources**\ (3).
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Reporting Bugs
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==============
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Bugs in this function should be reported to
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https://gitlab.freedesktop.org/mesa/libdrm/-/issues
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See Also
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========
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**drm**\ (7), **drm-kms**\ (7), **drmModeGetFB**\ (3), **drmModeAddFB**\ (3),
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**drmModeAddFB2**\ (3), **drmModeRmFB**\ (3), **drmModeDirtyFB**\ (3),
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**drmModeGetCrtc**\ (3), **drmModeSetCrtc** (3), **drmModeGetEncoder** (3),
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**drmModeGetConnector**\ (3)
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